PUBLISHING HOUSE OF STANDARDS
Moscow
STATE STANDARD OF THE USSR UNION
Date of introduction from 01/01/78
This standard applies to adjustable wrenches manufactured for the needs of National economy and export.
(Modified edition, No. 2).
1. MAIN DIMENSIONS
1.1. The main dimensions of adjustable wrenches must correspond to those indicated in the drawing and table. 1.
* Can be manufactured with an inclination angle of 22°30"
1 - key body, 2 - movable sponge, 3 - worm, 4 - worm axis, 5 - spring
Notes
1. The drawing does not define the design.
size 2 L given without taking into account protective and decorative coatings.
Table 1
| Key designation | Applicability | S, no less | N, no less | |||
Notes
1. Dimensions S And N given at the greatest opening of the sponges.
2. Values enclosed in brackets should be applied before 01/01/91.
Example symbol adjustable wrench size S= 30 mm, with H12.X1 coating:
1.2. The design and main dimensions of the key parts are given in the recommended appendix.
2. TECHNICAL REQUIREMENTS
2.1. Keys must be manufactured in accordance with the requirements of this standard according to drawings and reference samples approved in the prescribed manner.
Key parts must be made of the materials specified in table. 2.
table 2
Notes
1. It is allowed to use steel of other grades with physical and mechanical properties in a heat-treated state not lower than the steels listed in table. 2.
2.(Deleted, Amendment No. 2).
2.2. The keys must have strength determined by the test torques given in table. 3.
Table 3
2.1,2.2. (Changed edition, Rev. 2).
2.3. The working surfaces of the wrench jaws must be parallel to each other. Deviation from parallelism is allowed, aimed at widening the throat towards its base, not exceeding 2°.
2.4. When turning the worm, the movable jaw of the wrench should move smoothly along the entire length of the jaw, without jamming.
2.5. During operation of the key, it must be ensured that the worm is kept from turning spontaneously.
2.6. When the movable jaw is pressed sideways, there is a one-sided gap between its supporting surface and the surface of the housing guides in the area A should not be more than, mm:
for keys with jaw size S= 12 and 19 mm.......... 0.25 (0.3)
« « « « « S= 24 and 30 mm........... 0.28 (0.4)
« « « « « S= 36 and 46 mm........... 0.3 (0.6)
« « « « « S= 50 mm................... 0.36
Note Values in parentheses should apply before 01/01/91.
2.7. When the wrench jaws are fully brought together, the convergence of the tops of their working surfaces must be ensured.
Note. By agreement with the consumer, until 01/01/91, the need for sponges is allowed, not exceeding:
for keys with jaw size up to 24 mm 3 mm,
» » » » » St. 24 mm 8 mm.
2.8. The roughness parameters of key surfaces according to GOST 2789 should be, microns, no more than:
supporting surfaces of the jaws and the outer contour........... Ra 1,6
working surfaces of the sheds................................................... ... Ra 6,3
other surfaces........................................................ ........ Ra 12,5
2.6 - 2.8. (Changed edition, Amendment No. 2).
2.9.(Deleted, Amendment No. 2).
2.10. Keys must have one of the protective and decorative coatings indicated in table. 5.
Table 5 *
| Group of operating conditions according to GOST 9.303 | Name of coating | Designation |
|
| according to GOST 9.306 | |||
| Oxide with oiling | Chem. ok. prm. | ||
| Phosphate with oiling | Chem. Phos. prm. | ||
| Chrome 9 microns thick | |||
| Chrome 1 micron thick with a nickel sublayer 12 microns thick | |||
| Zinc 15 microns thick chromated | |||
| Phosphate with subsequent painting of the handles with nitroglyphthalic enamel NTs-132 (or pentaphthalic enamel GTF-115) of different colors according to class IV and application of polyacrylate varnish AK-113 on the lightened surfaces of the blades | Chem. Phos. Enamel NTs-132 various. color GOST 6631, IV, varnish AK-113 |
||
| Chrome 1 micron thick with an underlayer of electrolytically deposited nickel 14 microns thick and nickel deposited by the same method 7 microns thick | |||
| Cadmium 21 microns thick chromated | |||
Table 4. (Deleted, Amendment No. 1).
Notes:
1. It is allowed, by agreement with the consumer, to use other metallic and non-metallic coatings in accordance with GOST 9.306 and GOST 9.032, whose protective and decorative properties are not inferior to those indicated in the table. 5.
2. Keys produced for sale through a retail distribution network must have protective and decorative coatings of at least group 2 operating conditions according to GOST 9.303.
3. It is allowed, in agreement with trading organizations, for sale through a retail distribution network, to use coatings that correspond to group 1 of operating conditions in accordance with GOST 9.303.
(Changed edition, Amendment No. 2).
2.11. Technical requirements to the quality of coatings - according to GOST 9.301.
2.12. The full installed life of the keys is 10,000 loading-screwings with the application of torques indicated in the table. 3.
The limit state criterion is failure to comply with the requirements of clause 2.4 or clause 2.5 or breakage of the worm or rack.
2.13. The following must be clearly marked on the key:
manufacturer's trademark;
throat size;
key designation;
price (for retail sale).
2.14. Internal packaging of keys VU-1, VU-2, VU-3, VU-7 - in accordance with GOST 9.014.
Other requirements for labeling and packaging are in accordance with GOST 18088.
2.12 - 2.14. (Introduced additionally, Amendment No. 2).
3. ACCEPTANCE
3.1. Acceptance of keys - in accordance with GOST 26810.
3.2. Key reliability tests must be carried out once every three years on at least three keys of the same standard size.
Sec. 3. (Changed edition, Amendment No. 2).
4. TEST METHODS
4.1. The performance of the keys is checked using test torques. The keys are tested on a test bench. Open-jaw wrenches are mounted with their jaws on a mandrel that has a regular hexagonal shape in cross-section. The nominal dimensions of hexagonal mandrels must be equal to the minimum male turnkey dimensions of normal accuracy according to GOST 6424.
The load should be applied to the end of the handle at a distance of no more than 50 mm from its end in the direction coinciding with the direction of retraction of the movable jaw.
Mandrel hardness - 53 ... 57 HRC e.
During testing, the torque value should gradually increase to the values indicated in the table. 3. Keys must withstand at least three loads.
After testing, the keys should not have any residual deformation and should be suitable for further work.
(Changed edition, Amendment No. 2).
4.1a. Reliability tests of keys must be carried out on testing devices or stands, under the test conditions specified in clause 4.1. In this case, the test results are considered satisfactory if each of the controlled keys does not reach the limiting state.
(Introducedadditionally, Rev. No. 2).
4.3. The hardness of the keys is checked according to GOST 9013.
4.4. The surface roughness of keys is checked by comparison with roughness samples or profilometers (profilers).
4.5. Appearance Protective and decorative coatings are checked visually.
4.6. The quality of galvanic coatings is checked according to GOST 9.302.
(Introducedadditionally, Rev. No. 1).
5. TRANSPORTATION AND STORAGE
Transportation and storage of keys - in accordance with GOST 18088.
Sec. 5. (Changed edition, Amendment No. 2).
6. SAFETY
6.1. The design of the key should prevent the possibility of the movable jaw falling out when opening the jaw.
6.2. When using keys, it is not allowed to use additional levers or use a key with a jaw size larger than that indicated on the key.
(Changed edition, Amendment No. 2).
Sec. 7. (Deleted, Amendment No. 2).
DESIGN AND MAIN DIMENSIONS OF PARTS OF ADJUSTABLE WRENCHES
Pos. 1. Key body(Figure 1, Table 1)
Table 1
| s, no less | |||||||||||
Continuation of the table. 1
| s, no less | ||||||||||||
Continuation of the table. 1
| s, no less | |||||||||||||
Notes:
1. Thread - according to GOST 24705. Maximum thread deviations - according to GOST 16093.
2. Unspecified maximum deviations of dimensions: untreated surfaces - according to accuracy class T4 GOST 7505, others - according to IT16.
Pos 2. Movable sponge
(drawing 2 table 2)
table 2
| s, no less | ||||||||||||
Continuation of the table.2
| s, no less | |||||||
| Prev. off |
|||||||
Note. Unspecified maximum deviations of dimensions: untreated surfaces - according to accuracy class T4 GOST 7505; the rest - covered - according to H14, covering - according to h14.
Pos. 3. Worm(Figure 3, Table 3)
Table 3
| S, no less
Unspecified maximum deviations of dimensions: female - according to H14, female - according to H14. Pos. 4. Worm axis (Figure 4, Table 4) Table 4
Unspecified maximum dimensional deviations - according to h11. INFORMATION DATA 1 . DEVELOPED AND INTRODUCED by the Ministry of Machine Tool and Tool Industry DEVELOPERS DI. Semenchenko, G.A. Astafieva, A.M. Krasnoshchekova 2 . APPROVED AND ENTERED INTO EFFECT by Resolution of the State Committee of Standards of the Council of Ministers of the USSR dated November 28, 1975 No. 3704 3 . The inspection period was 1990, inspection frequency - 5 years 4 . The standard is fully compliant with ISO 6787-82 5 . Instead of GOST 7275-62 6 . REFERENCE REGULATIVE AND TECHNICAL DOCUMENTS
6 . REISSUE (March 1993) with Amendments No. 1, 2, approved in March 1987, in March 1989 (IUS 6-87, 6-89) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
(Modified edition, No. 2).
1. MAIN DIMENSIONS
1.1. The main dimensions of adjustable wrenches must correspond to those indicated in the drawing and table. 1.
* Can be manufactured with an inclination angle of 22°30"
1 - key body, 2 - movable sponge, 3 - worm, 4 - worm axis, 5 - spring
|
Key designation |
Applicability |
S, no less |
N, no less |
|||
Notes
1. Dimensions S And N given at the greatest opening of the sponges.
2. TECHNICAL REQUIREMENTS
2.1. Keys must be manufactured in accordance with the requirements of this standard according to drawings and reference samples approved in the prescribed manner.
Key parts must be made of the materials specified in table. 2.
table 2
Notes
1. It is allowed to use steels of other grades with physical and mechanical properties in a heat-treated state not lower than those of the steels listed in table. 2.
2.1, 2.2. (Changed edition, Rev. 2).
2.3. The working surfaces of the wrench jaws must be parallel to each other. Deviation from parallelism is allowed, aimed at widening the throat towards its base, not exceeding 2°.
2.4. When turning the worm, the movable jaw of the wrench should move smoothly along the entire length of the jaw, without jamming.
2.5. During operation of the key, it must be ensured that the worm is kept from turning spontaneously.
2.6. When the movable jaw is pressed sideways, there is a one-sided gap between its supporting surface and the surface of the housing guides in the area A should not be more than, mm:
for keys with jaw size S= 12 and 19 mm.......... 0.25 (0.3)
« « « « « S= 24 and 30 mm........... 0.28 (0.4)
« « « « « S= 36 and 46 mm........... 0.3 (0.6)
« « « « « S= 50 mm................... 0.36
Note Values in parentheses should apply before 01/01/91.
2.7. When the wrench jaws are fully brought together, the convergence of the tops of their working surfaces must be ensured.
Note. By agreement with the consumer, until 01/01/91, the need for sponges is allowed, not exceeding:
for keys with jaw size up to 24 mm 3 mm,
» » » » » St. 24 mm 8 mm.
2.8. The roughness parameters of key surfaces according to GOST 2789 should be, microns, no more than:
supporting surfaces of the jaws and the outer contour........... Ra 1,6
working surfaces of the sheds................................................... ... Ra 6,3
other surfaces........................................................ ........ Ra 12,5
2.6 - 2.8. (Changed edition, Amendment No. 2).
2.9. (Deleted, Amendment No. 2).
2.10. Keys must have one of the protective and decorative coatings indicated in table. 5.
Table 5 *
|
Group of operating conditions according to GOST 9.303 |
Name of coating |
Designation |
|
|
according to GOST 9.306 |
|||
|
Oxide with oiling |
Chem. ok. prm. |
||
|
Phosphate with oiling |
Chem. Phos. prm. |
||
|
Chrome 9 microns thick |
|||
|
Chrome 1 micron thick with a nickel sublayer 12 microns thick |
|||
|
Zinc 15 microns thick chromated |
|||
|
Phosphate with subsequent painting of the handles with nitroglyphthalic enamel NTs-132 (or pentaphthalic enamel GTF-115) of different colors according to class IV and application of polyacrylate varnish AK-113 on the lightened surfaces of the blades |
Chem. Phos. Enamel NTs-132 various. color GOST 6631, IV, varnish AK-113 |
||
|
Chrome 1 micron thick with an underlayer of electrolytically deposited nickel 14 microns thick and nickel deposited by the same method 7 microns thick |
|||
|
Cadmium 21 microns thick chromated |
|||
Table 4. (Deleted, Amendment No. 1).
Notes:
1. It is allowed, by agreement with the consumer, to use other metallic and non-metallic coatings in accordance with GOST 9.306 and GOST 9.032, whose protective and decorative properties are not inferior to those indicated in the table. 5.
2. Keys produced for sale through a retail distribution network must have protective and decorative coatings of at least group 2 operating conditions according to GOST 9.303.
3. It is allowed, in agreement with trading organizations, for sale through a retail distribution network, to use coatings that correspond to group 1 of operating conditions in accordance with GOST 9.303.
2.11. Technical requirements for the quality of coatings are in accordance with GOST 9.301.
2.12. The full installed life of the keys is 10,000 loading-screwings with the application of torques indicated in the table. 3.
The limit state criterion is failure to comply with the requirements of clause 2.4 or clause 2.5 or breakage of the worm or rack.
2.13. The following must be clearly marked on the key:
manufacturer's trademark;
throat size;
key designation;
price (for retail sale).
2.14. Internal packaging of keys VU-1, VU-2, VU-3, VU-7 - in accordance with GOST 9.014.
Other requirements for labeling and packaging are in accordance with GOST 18088.
2.12 - 2.14. (Introduced additionally, Amendment No. 2).
3. ACCEPTANCE
3.1. Acceptance of keys - in accordance with GOST 26810.
3.2. Key reliability tests must be carried out once every three years on at least three keys of the same standard size.
Sec. 3. (Changed edition, Amendment No. 2).
4. TEST METHODS
4.1. The performance of the keys is checked using test torques. The keys are tested on a test bench. Open-jaw wrenches are mounted with their jaws on a mandrel that has a regular hexagonal shape in cross-section. The nominal dimensions of hexagonal mandrels must be equal to the minimum male turnkey dimensions of normal accuracy according to GOST 6424.
The load should be applied to the end of the handle at a distance of no more than 50 mm from its end in the direction coinciding with the direction of retraction of the movable jaw.
Mandrel hardness - 53 ... 57 HRC e.
During testing, the torque value should gradually increase to the values indicated in the table. 3. Keys must withstand at least three loads.
After testing, the keys should not have any residual deformation and should be suitable for further work.
(Changed edition, Amendment No. 2).
4.1a. Reliability tests of keys must be carried out on testing devices or stands, under the test conditions specified in clause 4.1. In this case, the test results are considered satisfactory if each of the controlled keys does not reach the limiting state.
(Introduced additionally, Rev. No. 2).
4.3. The hardness of the keys is checked according to GOST 9013.
4.4. The surface roughness of keys is checked by comparison with roughness samples or profilometers (profilers).
4.5. The appearance of protective and decorative coatings is checked visually.
4.6. The quality of galvanic coatings is checked according to GOST 9.302.
(Introduced additionally, Rev. No. 1).
5. TRANSPORTATION AND STORAGE
Transportation and storage of keys - in accordance with GOST 18088.
Sec. 5. (Changed edition, Amendment No. 2).
6. SAFETY
6.1. The design of the key should prevent the possibility of the movable jaw falling out when opening the jaw.
6.2. When using keys, it is not allowed to use additional levers or use a key with a jaw size larger than that indicated on the key.
(Changed edition, Amendment No. 2).
Sec. 7. (Deleted, Amendment No. 2).
APPLICATION
DESIGN AND MAIN DIMENSIONS OF PARTS OF ADJUSTABLE WRENCHES
Pos. 1. Key body(Figure 1, Table 1)
Table 1
|
s, no less |
|||||||||||
Continuation of the table. 1
|
s, no less |
||||||||||||
Continuation of the table. 1
|
s, no less |
|||||||||||||
Notes:
1. Thread - according to GOST 24705. Maximum thread deviations - according to GOST 16093.
2. Unspecified maximum deviations of dimensions: untreated surfaces - according to accuracy class T4 GOST 7505, others - according to IT16.
Pos 2. Movable sponge
(drawing 2 table 2)
table 2
|
s, no less |
||||||||||||
Continuation of the table. 2
|
s, no less |
|||||||
|
Prev. off |
|||||||
Note: Unspecified maximum deviations of dimensions: untreated surfaces - according to accuracy class T4 GOST 7505; the rest - covered - according to H14, covering - according to h14.
Pos. 3. Worm(Figure 3, Table 3)
Table 3
|
S, no less |
|||||
Unspecified maximum deviations of dimensions: female - according to H14, female - according to H14.
Pos. 4. Worm axis
(Figure 4, Table 4)
Table 4
|
S, no less |
|||||||||
|
Prev. off |
|||||||||
Unspecified maximum dimensional deviations - according to h11.
INFORMATION DATA
1 . DEVELOPED AND INTRODUCED by the Ministry of Machine Tool and Tool Industry
DEVELOPERS
DI. Semenchenko, G.A. Astafieva, A.M. Krasnoshchekova
2 . APPROVED AND ENTERED INTO EFFECT by Resolution of the State Committee of Standards of the Council of Ministers of the USSR dated November 28, 1975 No. 3704
3 . The inspection period was 1990,
inspection frequency - 5 years
4 . The standard is fully compliant with ISO 6787-82
5 . Instead of GOST 7275-62
6 . REFERENCE REGULATIVE AND TECHNICAL DOCUMENTS
|
Item number, application |
|
|
GOST 9.014-78 |
|
|
GOST 9.032-74 |
|
|
GOST 9.301-86 |
|
|
GOST 9.302-88 |
|
|
GOST 9.303-84 |
|
|
GOST 9.306-85 |
|
|
GOST 1050-88 |
|
|
GOST 2789-73 |
|
|
GOST 7505-89 |
Application |
|
GOST 4543-71 |
|
|
GOST 6424-73 |
|
|
GOST 6631-74 |
|
|
GOST 9013-59 |
|
|
GOST 16093-81 |
Application |
|
GOST 18088-83 |
|
|
GOST 21474-75 |
Application |
|
GOST 24705-81 |
Application |
|
GOST 26810-86 |
6 . REISSUE (March 1993) with Amendments No. 1, 2, approved in March 1987, in March 1989 (IUS 6-87, 6-89)
GOST 7275-75
Group G24
INTERSTATE STANDARD
ADJUSTABLE WRENCHES
Adjustable wrenches.
Specifications
OKP 39 2651
Date of introduction 1978-01-01
INFORMATION DATA
1. DEVELOPED AND INTRODUCED by the Ministry of Machine Tool and Tool Industry
2. APPROVED AND ENTERED INTO EFFECT by Resolution of the State Committee of Standards of the Council of Ministers of the USSR dated November 28, 1975 N 3704
3. The standard fully complies with ISO 6787-82
4. INSTEAD GOST 7275-62
5. REFERENCE REGULATIVE AND TECHNICAL DOCUMENTS
Item number, application |
|
GOST 9.014-78 | |
GOST 9.032-74 | |
GOST 9.301-86 | |
GOST 9.302-88 | |
GOST 9.303-84 | |
GOST 9.306-85 | |
GOST 1050-88 | |
GOST 2789-73 | |
GOST 4543-71 | |
GOST 6424-73 | |
GOST 6631-74 | |
GOST 7505-89 | Application |
GOST 9013-59 | |
GOST 16093-81 | Application |
GOST 18088-83 | |
GOST 21474-75 | Application |
GOST 24705-81 | Application |
GOST 26810-86 |
6. The validity period was lifted according to Protocol No. 4-93 of the Interstate Council for Standardization, Metrology and Certification (IUS 4-94)
7. EDITION (October 2001) with Amendments No. 1, 2, approved in March 1987, in March 1989 (IUS 6-87, 6-89)
This standard applies to adjustable wrenches manufactured for the needs of the country's economy and export.
(Changed edition, No. 2).
1. MAIN DIMENSIONS
1. MAIN DIMENSIONS
1.1. The main dimensions of the adjustable wrenches must correspond to those indicated in the drawing and in Table 1.
________________
* Can be manufactured with an inclination angle of 22°30".
1 - key body; 2 - movable sponge; 3 - worm; 4 - worm axis; 5 - spring
Notes:
1. The drawing does not define the design.
2. The size is given without taking into account protective and decorative coatings.
Table 1
Key designation | Applicability | No less | No more | |||
Notes:
1. Dimensions and are given at the greatest opening of the jaws.
2. Values in parentheses were used before 01/01/91.
An example of a symbol for an adjustable wrench with a jaw size of 30 mm, coated H12.X1:
Key 7813-0034 Н12.Х1 GOST 7275-75
1.2. The design and main dimensions of the key parts are given in the recommended appendix.
2. TECHNICAL REQUIREMENTS
2.1. Keys must be manufactured in accordance with the requirements of this standard according to drawings and reference samples approved in the prescribed manner.
Key parts must be made of the materials specified in Table 2.
table 2
Name of parts | steel grade | Hardness HRC after heat treatment, |
|
Frame | 40HFA GOST 4543 | Working part | |
40Х GOST 4543 | |||
45 GOST 1050 | Handle at 1/3 length from the top of the throat | ||
Movable sponge | 40HFA GOST 4543 | ||
40Х GOST 4543 | |||
Notes:
1. It is allowed to use steels of other grades with physical and mechanical properties in a heat-treated state not lower than those of the steels listed in Table 2.
2. (Deleted, Amendment No. 2).
2.2. The keys must have strength determined by the test torques given in Table 3.
Table 3
2.1, 2.2. (Changed edition, Amendment No. 2).
2.3. The working surfaces of the wrench jaws must be parallel to each other. Deviation from parallelism is allowed, aimed at widening the throat towards its base, not exceeding 2°.
2.4. When turning the worm, the movable jaw of the wrench should move smoothly along the entire length of the jaw, without jamming.
2.5. During operation of the key, it must be ensured that the worm is kept from turning spontaneously.
2.6. When the movable jaw is pressed sideways, the one-sided gap between its supporting surface and the surface of the housing guides in the area should not be more than, mm:
for keys with jaw sizes 12 and 19 mm ... 0.25 (0.3)
Note. Values in parentheses were used until 01/01/91.
2.7. When the wrench jaws are fully brought together, the convergence of the tops of their working surfaces must be ensured.
Note. By agreement with the consumer, until 01.01.91, divergence of jaws was allowed, not exceeding:
for keys with jaw size up to 24 mm ... 3 mm;
2.8. The roughness parameters of key surfaces according to GOST 2789 should be, microns, no more than:
supporting surfaces | ||||
working surfaces of jaws | ||||
other surfaces | ||||
2.6-2.8. (Changed edition, Amendment No. 2).
2.9. (Deleted, Amendment No. 2).
2.10. Keys must have one of the protective and decorative coatings indicated in Table 5.
Table 5*
________________
* Table 4. (Deleted, Amendment No. 1).
Group of operating conditions according to GOST 9.303 | Name of coating | Designation |
|
according to GOST 9.306 | according to GOST 9.032 |
||
Oxide with oiling | Chem. ok. prm | ||
Phosphate with oiling | Chem. Phos. prm | ||
Chrome 9 microns thick | |||
Chrome 1 micron thick with a nickel sublayer 12 microns thick | |||
Zinc 15 microns thick chromated | |||
Phosphate with subsequent painting of the handles with nitroglyphthalic enamel NTs-132 (or pentaphthalic enamel PF-115) of different colors according to class IV and application of polyacrylate varnish AK-113 on the lightened surfaces of the blades | Chem. Phos. |
||
Chrome 1 micron thick with an underlayer of electrolytically deposited nickel 14 microns thick and nickel deposited by the same method 7 microns thick | |||
Cadmium 21 microns thick chromated | |||
Notes:
1. It is allowed, by agreement with the consumer, to use other metallic and non-metallic coatings in accordance with GOST 9.306 and GOST 9.032, whose protective and decorative properties are not inferior to those indicated in Table 5.
2. Keys produced for sale through a retail distribution network must have protective and decorative coatings of at least group 2 operating conditions according to GOST 9.303.
3. It is allowed, in agreement with trading organizations, for sale through a retail distribution network, to use coatings that correspond to group 1 of operating conditions in accordance with GOST 9.303.
(Changed edition, Amendment No. 2).
2.11. Technical requirements for the quality of coatings are in accordance with GOST 9.301.
2.12. The full installed life of the keys is 10,000 loading-screwings with the application of torques indicated in Table 3.
The criterion for the limit state is failure to comply with the requirements of clause 2.4 or clause 2.5 or breakage of the worm or rack.
2.13. The following must be clearly marked on the key:
manufacturer's trademark;
throat size;
key designation.
2.14. Internal packaging of keys VU-1, VU-2, VU-3, VU-7 - in accordance with GOST 9.014.
Other requirements for labeling and packaging are in accordance with GOST 18088.
2.12-2.14. (Introduced additionally, Amendment No. 2).
3. ACCEPTANCE
3.1. Acceptance of keys - in accordance with GOST 26810.
3.2. Key reliability tests must be carried out once every three years on at least three keys of the same standard size.
Section 3. (Changed edition, Amendment No. 2).
4. TEST METHODS
4.1. The performance of the keys is checked using test torques. The keys are tested on a test bench. Open-jaw wrenches are mounted with their jaws on a mandrel that has a regular hexagonal shape in cross-section. The nominal dimensions of hexagonal mandrels must be equal to the minimum male turnkey dimensions of normal accuracy according to GOST 6424.
The load should be applied to the end of the handle at a distance of no more than 50 mm from its end in the direction coinciding with the direction of retraction of the movable jaw.
The hardness of the mandrels is 53...57 HRC.
During testing, the torque value should gradually increase to the values specified in Table 3. The keys must withstand at least three loads.
After testing, the keys should not have any residual deformation and should be suitable for further work.
(Changed edition, Amendment No. 2).
4.1a. Reliability tests of keys must be carried out on testing devices or stands under the test conditions specified in clause 4.1. In this case, the test results are considered satisfactory if each of the controlled keys does not reach the limiting state.
(Introduced additionally, Amendment No. 2).
4.2. Linear dimensions are checked using universal or special measuring instruments.
4.3. The hardness of the keys is checked according to GOST 9013.
4.4. The surface roughness of keys is checked by comparison with roughness samples or profilometers (profilers).
4.5. The appearance of protective and decorative coatings is checked visually.
4.6. The quality of galvanic coatings is checked according to GOST 9.302.
4.2-4.6. (Introduced additionally, Amendment No. 1).
5. TRANSPORTATION AND STORAGE
Transportation and storage of keys - in accordance with GOST 18088.
Section 5. (Changed edition, Amendment No. 2).
6. SAFETY
6.1. The design of the key should prevent the possibility of the movable jaw falling out when opening the jaw.
6.2. When using keys, it is not allowed to use additional levers or use a key with a jaw size larger than that indicated on the key.
(Changed edition, Amendment No. 2).
Section 7. (Deleted, Amendment No. 2).
APP (recommended). DESIGN AND MAIN DIMENSIONS OF PARTS OF ADJUSTABLE WRENCHES
Damn.1. Pos.1. Key body
Pos.1. Key body(Figure 1, Table 1)
Table 1
, | ||||||||||||||||||
Continuation of Table 1
, | ||||||||||||||||||
Notes:
1. Thread - according to GOST 24705*. Maximum thread deviations - according to GOST 16093**.
2. Unspecified maximum deviations of dimensions: untreated surfaces - according to accuracy class T4 GOST 7505, others - according to IT16.
_________________
* In the territory Russian Federation GOST 24705-2004 is valid.
** GOST 16093-2004 is in force on the territory of the Russian Federation. - Note.
Damn.2. Pos.2. Movable sponge
Pos.2. Movable sponge
(Figure 2, Table 2)
Damn.2
table 2
, | ||||||||||||
Continuation of Table 2
, | |||||||
Prev. off | |||||||
Note. Unspecified maximum deviations of dimensions: untreated surfaces - according to accuracy class T4 GOST 7505; the rest - covered - according to H14, covering - according to h14.
Damn.3. Pos.3. Worm
Pos.3. Worm(Figure 3, Table 3)
Table 3
, | |||||||||||
Prev. off | |||||||||||
Unspecified maximum deviations of dimensions: female - according to H14, female - according to H14.
Damn.4. Pos.4. Worm axis
Pos.4. Worm axis
(Figure 4, Table 4)
Table 4
, | ||||||||
Prev. off | ||||||||
Unspecified maximum dimensional deviations - according to h11.
ROSSTANDART FA on technical regulation and metrology
NEW NATIONAL STANDARDS: www.protect.gost.ru
FSUE STANDARDINFORM provision of information from the Russian Products database: www.gostinfo.ru
FA ON TECHNICAL REGULATION"Dangerous goods" system: www.sinatra-gost.ru
PUBLISHING HOUSE OF STANDARDS
Moscow
STATE STANDARD OF THE USSR UNION
Date of introduction from 01/01/78
This standard applies to adjustable wrenches manufactured for the needs of the national economy and export.
(Modified edition, No. 2).
1. MAIN DIMENSIONS
1.1. The main dimensions of adjustable wrenches must correspond to those indicated in the drawing and table. 1.
* Can be manufactured with an inclination angle of 22°30"
1 - key body, 2 - movable sponge, 3 - worm, 4 - worm axis, 5 - spring
Notes
1. The drawing does not define the design.
size 2 L given without taking into account protective and decorative coatings.
Table 1
|
Key designation |
Applicability |
S, no less |
N, no less |
|||
Notes
1. Dimensions S And N given at the greatest opening of the sponges.
2. Values enclosed in brackets should be applied before 01/01/91.
An example of a symbol for an adjustable wrench with a jaw size S= 30 mm, with H12.X1 coating:
1.2. The design and main dimensions of the key parts are given in the recommended appendix.
2. TECHNICAL REQUIREMENTS
2.1. Keys must be manufactured in accordance with the requirements of this standard according to drawings and reference samples approved in the prescribed manner.
Key parts must be made of the materials specified in table. 2.
table 2
Notes
1. It is allowed to use steel of other grades with physical and mechanical properties in a heat-treated state not lower than the steels listed in table. 2.
2.(Deleted, Amendment No. 2).
2.2. The keys must have strength determined by the test torques given in table. 3.
Table 3
2.1,2.2. (Changed edition, Rev. 2).
2.3. The working surfaces of the wrench jaws must be parallel to each other. Deviation from parallelism is allowed, aimed at widening the throat towards its base, not exceeding 2°.
2.4. When turning the worm, the movable jaw of the wrench should move smoothly along the entire length of the jaw, without jamming.
2.5. During operation of the key, it must be ensured that the worm is kept from turning spontaneously.
2.6. When the movable jaw is pressed sideways, there is a one-sided gap between its supporting surface and the surface of the housing guides in the area A should not be more than, mm:
for keys with jaw size S= 12 and 19 mm.......... 0.25 (0.3)
« « « « « S= 24 and 30 mm........... 0.28 (0.4)
« « « « « S= 36 and 46 mm........... 0.3 (0.6)
« « « « « S= 50 mm................... 0.36
Note Values in parentheses should apply before 01/01/91.
2.7. When the wrench jaws are fully brought together, the convergence of the tops of their working surfaces must be ensured.
Note. By agreement with the consumer, until 01/01/91, the need for sponges is allowed, not exceeding:
for keys with jaw size up to 24 mm 3 mm,
» » » » » St. 24 mm 8 mm.
2.8. Key surface roughness parameters according to GOST 2789 should be, µm, no more:
supporting surfaces of the jaws and the outer contour........... Ra 1,6
working surfaces of the sheds................................................... ... Ra 6,3
other surfaces........................................................ ........ Ra 12,5
2.6 - 2.8. (Changed edition, Amendment No. 2).
2.9.(Deleted, Amendment No. 2).
2.10. Keys must have one of the protective and decorative coatings indicated in table. 5.
Table 5 *
|
Group of operating conditions according to GOST 9.303 |
Name of coating |
Designation |
|
|
Oxide with oiling |
Chem. ok. prm. |
||
|
Phosphate with oiling |
Chem. Phos. prm. |
||
|
Chrome 9 microns thick |
|||
|
Chrome 1 micron thick with a nickel sublayer 12 microns thick |
|||
|
Zinc 15 microns thick chromated |
|||
|
Phosphate with subsequent painting of the handles with nitroglyphthalic enamel NTs-132 (or pentaphthalic enamel GTF-115) of different colors according to class IV and application of polyacrylate varnish AK-113 on the lightened surfaces of the blades |
Chem. Phos. Enamel NTs-132 various. color GOST 6631, IV, varnish AK-113 |
||
|
Chrome 1 micron thick with an underlayer of electrolytically deposited nickel 14 microns thick and nickel deposited by the same method 7 microns thick |
|||
|
Cadmium 21 microns thick chromated |
|||
Table 4. (Deleted, Amendment No. 1).
Notes:
1. It is allowed, by agreement with the consumer, to use other metallic and non-metallic coatings according to GOST 9.306 And GOST 9.032, in terms of protective and decorative properties not inferior to those indicated in the table. 5.
2. Keys produced for sale through a retail distribution network must have protective and decorative coatings of at least 2 groups of operating conditions according to GOST 9.303.
3. It is allowed, in agreement with trading organizations, for sale through a retail distribution network, to use coatings that correspond to group 1 of operating conditions according to GOST 9.303.
(Changed edition, Amendment No. 2).
2.11. Technical requirements for the quality of coatings - according to GOST 9.301.
2.12. The full installed life of the keys is 10,000 loading-screwings with the application of torques indicated in the table. 3.
The limit state criterion is failure to comply with the requirements of clause 2.4 or clause 2.5 or breakage of the worm or rack.
2.13. The following must be clearly marked on the key:
manufacturer's trademark;
throat size;
key designation;
price (for retail sale).
2.14. Internal packaging of keys VU-1, VU-2, VU-3, VU-7 - each GOST 9.014.
Other requirements for labeling and packaging - according to GOST 18088.
2.12 - 2.14. (Introduced additionally, Amendment No. 2).
3. ACCEPTANCE
3.2. Key reliability tests must be carried out once every three years on at least three keys of the same standard size.
Sec. 3.
4. TEST METHODS
4.1. The performance of the keys is checked using test torques. The keys are tested on a test bench. Open-jaw wrenches are mounted with their jaws on a mandrel that has a regular hexagonal shape in cross-section. The nominal dimensions of hexagonal mandrels must be equal to the minimum male turnkey dimensions of normal accuracy according to GOST 6424.
The load should be applied to the end of the handle at a distance of no more than 50 mm from its end in the direction coinciding with the direction of retraction of the movable jaw.
Mandrel hardness - 53 ... 57 HRC e.
During testing, the torque value should gradually increase to the values indicated in the table. 3. Keys must withstand at least three loads.
After testing, the keys should not have any residual deformation and should be suitable for further work.
4.1a. Reliability tests of keys must be carried out on testing devices or stands, under the test conditions specified in clause 4.1. In this case, the test results are considered satisfactory if each of the controlled keys does not reach the limiting state.
(Introducedadditionally, Rev. No. 2).
4.3. The hardness of the keys is checked by GOST 9013.
4.4. The surface roughness of keys is checked by comparison with roughness samples or profilometers (profilers).
4.5. The appearance of protective and decorative coatings is checked visually.
4.6. The quality of galvanic coatings is checked by GOST 9.302.
(Introducedadditionally, Rev. No. 1).
5. TRANSPORTATION AND STORAGE
Transportation and storage of keys - by GOST 18088.
Sec. 5. (Changed edition, Amendment No. 2).
6. SAFETY
6.1. The design of the key should prevent the possibility of the movable jaw falling out when opening the jaw.
6.2. When using keys, it is not allowed to use additional levers or use a key with a jaw size larger than that indicated on the key.
(Changed edition, Amendment No. 2).
Sec. 7. (Deleted, Amendment No. 2).
APPLICATION
DESIGN AND MAIN DIMENSIONS OF PARTS OF ADJUSTABLE WRENCHES
Pos. 1. Key body(Figure 1, Table 1)
Table 1
|
s, no less |
|||||||||||
Continuation of the table. 1
|
s, no less |
||||||||||||
Continuation of the table. 1
|
s, no less |
|||||||||||||
Notes:
2. Unspecified maximum deviations of dimensions: untreated surfaces - according to accuracy class T4 GOST 7505, the rest - according to IT16.
Pos 2. Movable sponge
(drawing 2 table 2)
table 2
|
s, no less |
||||||||||||
Continuation of the table.2
|
s, no less |
|||||||
|
Prev. off |
|||||||
Note. Unspecified maximum deviations of dimensions: untreated surfaces - according to accuracy class T4 GOST 7505; the rest - covered - according to H14, covering - according to h14.
Pos. 3. Worm(Figure 3, Table 3)
Table 3
|
S, no less |
|||||