General Motors Test Bolts, Nuts, & Washers
Wilson-Garner manufactures test bolts and stocks test nuts and washers for several General Motors tests, including torque-tension, bearing surface, coefficient of friction, and torsional yield tests. Test products must be uniform to ensure accurate results across tests, and Wilson-Garner holds ourselves to exacting quality standards to ensure you get results you can trust.
We’re dedicated to going the extra mile. Based on customer feedback, we now re-roll threads on all of our test bolts after heat treat and surface finish to eliminate nicks or plating inconsistencies. Our parts are American-made and conform to the requirements of the following General Motors Engineering Standards:
GMW3044 | GMW3359 | GMW16722 | GM7112M | GMW4707 | GMW3179 Code G | GM6076M | GM6124M | GM6175M | GM6189P | GM6194 | GMW25
General Motors Torque-Tension Certification Testing Products In Stock
GM7112M/GMW4707
| Thread Size | Test Bolt Part Number | Test Nut Part Number | Test Washer Part Number |
| M6 x 1.00 | 11516103 | 11516088 | 11503952 (SFM006HZ) |
| M8 x 1.25 | 11516104 | 11516089 | 11502643 (SFM008HZ) |
| M10 x 1.50 | 11516105 | 11516090 | 11502644 (SFM010HZ) |
| M12 x 1.75 | 11516106 | 11516091 | 11502645 (SFM012HZ) |
| M14 x 2.00 | 11516107 | 11516092 | 11502646 (SFM014HZ) |
| M16 x 2.00 | 11516108 | 11516093 | 11502647 (SFM016HZ) |
| Thread Size | Test Bolt Part Number |
| M6 x 1.00 | 11516103 |
| M8 x 1.25 | 11516104 |
| M10 x 1.50 | 11516105 |
| M12 x 1.75 | 11516106 |
| M14 x 2.00 | 11516107 |
| M16 x 2.00 | 11516108 |
| Thread Size | Test Nut Part Number |
| M6 x 1.00 | 11516088 |
| M8 x 1.25 | 11516089 |
| M10 x 1.50 | 11516090 |
| M12 x 1.75 | 11516091 |
| M14 x 2.00 | 11516092 |
| M16 x 2.00 | 11516093 |
| Thread Size | Test Washer Part Number |
| M6 x 1.00 | 11503952 (SFM006HZ) |
| M8 x 1.25 | 11502643 (SFM008HZ) |
| M10 x 1.50 | 11502644 (SFM010HZ) |
| M12 x 1.75 | 11502645 (SFM012HZ) |
| M14 x 2.00 | 11502646 (SFM014HZ) |
| M16 x 2.00 | 11502647 (SFM016HZ) |
GMW 3044/GMW 3359
| Test Bolt Part Number | Test Nut Part Number | Test Washer Part Number |
| 11516105 | 11516090 | 11502644 (SFM010HZ) |
| M10 x 1.50 x 40mm Class 9.8 Plain Finish | M10 x 1.50 Style 1 Zinc Finish | Zinc Finish Square Test Washer Hardened |
| Test Bolt Part Number |
| 11516105 |
| M10 x 1.50 x 40mm Class 9.8 Plain Finish |
| Test Nut Part Number |
| 11516090 |
| M10 x 1.50 Style 1 Zinc Finish |
| Test Washer Part Number |
| 11502644 (SFM010HZ) |
| Zinc Finish Square Test Washer Hardened |
Bearing Surface Characteristics Testing
GMW 3359
| Test Bolt Part Number | Test Nut Part Number | Test Washer Part Number | |
| 11570102 | 11516090 | SFM010ALUM | SFM010SCEC |
| M10 x 1.50 x 60mm Class 10.9 – M14 Head Plain Finish | M10 x 1.50 Style 1 Zinc Finish | M10 Square Aluminum | M10 Square ELPO Finish |
| Test Bolt Part Number |
| 11570102 |
| M10 x 1.50 x 60mm Class 10.9 – M14 Head Plain Finish |
| Test Nut Part Number |
| 11516090 |
| M10 x 1.50 Style 1 Zinc Finish |
| Test Washer Part Number | |
| SFM010ALUM | SFM010SCEC |
| M10 Square Aluminum | M10 Square ELPO Finish |
Coefficient of Friction Testing
GMW 3044/GMW 3359 – per ISO 16047
| Test Bolt Part Number | Test Nut Part Number | Test Washer Type HL Part Number | Test Washer Type HH Part Number |
| HHM10150060-WZ102 | 11611982 or 11611982-S437 | 11611945 | NPN4 |
| M10 x 1.50 x 60mm Class 10.9 16mm Head Plain Finish | M10 x 1.50 Class 10 Plain Finish or Zinc S437 Finish | M10 Square Washer Type HL Plain Finish | M10 Square Washer Type HH Plain Finish |
| Test Bolt Part Number |
| HHM10150060-WZ102 |
| M10 x 1.50 x 60mm Class 10.9 16mm Head Plain Finish |
| Test Nut Part Number |
| 11611982 or 11611982-S437 |
| M10 x 1.50 Class 10 Plain Finish or Zinc S437 Finish |
| Test Washer Type HL Part Number |
| 11611945 |
| M10 Square Washer Type HL Plain Finish |
| Test Washer Type HH Part Number |
| NPN4 |
| M10 Square Washer Type HH Plain Finish |
GMW 3179 – per ISO 16047
| Test Nut Part Number |
| 11611982 |
| M10 x 1.50 Class 10 Plain Finish |
| Test Bolt Part Number |
| HHM10150060-WZ102 |
| M10 x 1.50 x 60mm Class 10.9 16mm Head Plain Finish |
| Test Bolt Part Number |
| 11570102 |
| M10 x 1.50 x 60mm Class 10.9 – M14 Head Plain Finish |
| Test Bolt Part Number | Test Bolt Part Number | Test Nut Part Number | Test Washer Type HL Part Number |
| 11570102 | HHM10150060-WZ102 | 11611982 | 11611945 |
| M10 x 1.50 x 60mm Class 10.9 – M14 Head Plain Finish | M10 x 1.50 x 60mm Class 10.9 16mm Head Plain Finish | M10 x 1.50 Class 10 Plain Finish | M10 Square Washer Type HL Plain Finish |
| Test Washer Type HL Part Number |
| 11611945 |
| M10 Square Washer Type HL Plain Finish |
GM Test Bolt: 11516103
M6 X 1.00 X 25MM PC9.8 Hex Head GM Test Bolt Plain
This M6 Property Class 9.8 test bolt is made to General Motors specifications and is suitable for torque-tension tests performed to the following GM Specs:
- GM7112M
- GMW4707
- GMW16722
SKU: 11516103
GM Test Nut: 11516088
M6 X 1.00 Style 1 Hex GM Test Nut Zinc
This zinc plated M6 test nut is made to General Motors specifications and is suitable for torque-tension tests performed to the following GM Specs:
- GM7112M
- GMW4707
SKU: 11516088
GM Test Washer: 11503952 (SFM006HZ)
M6 Square GM Test Washer Zinc
This M6 zinc plated hardened square test washer is suitable for torque-tension certification tests performed to the following specs:
- GMW16722
- GM7112M
- GMW4707
SKU: SFM006HZ
GM Test Bolt: 11516104
M8 X 1.25 X 35MM PC9.8 Hex Head GM Test Bolt Plain
This M8 Property Class 9.8 test bolt is made to General Motors specifications and is suitable for torque-tension tests performed to the following GM Specs:
- GM7112M
- GMW4707
- GMW16722
SKU: 11516104
GM Test Nut: 11516089
M8 X 1.25 Style 1 Hex GM Test Nut Zinc
This zinc plated M8 test nut is made to General Motors specifications and is suitable for torque-tension tests performed to the following GM Specs:
- GM7112M
- GMW4707
SKU: 11516089
GM Test Washer: 11502643 (SFM008HZ)
M8 Square GM Test Washer Zinc
This M8 zinc plated hardened square test washer is suitable for torque-tension certification tests performed to the following specs:
- GMW16722
- GM7112M
- GMW4707
SKU: SFM008HZ
Alt. Part Number: 11502643
GM Test Bolt: 11516105
M10 X 1.50 X 40MM PC9.8 Hex Head GM Test Bolt Plain
This plain Property Class 9.8 test bolt is made to General Motors specifications and is suitable for torque-tension tests performed to the following GM Specs:
- GMW3044
- GMW3359
- GM7112M
- GMW4707
- GMW16722
SKU: 11516105
GM Test Nut: 11516090
M10 X 1.50 Hex GM Style 1 Test Nut Zinc
This zinc plated Class 10 test nut is made to GM specifications and is suitable for torque-tension and bearing surface tests performed to the following specs:
- GMW3044
- GMW3359
- GM7112M
- GMW4707
SKU: 11516090
GM Test Washer: 11502644 (SFM010HZ)
Description: M10 Square GM Test Washer Zinc
This zinc plated hardened square test washer is suitable for torque-tension certification tests performed to the following specs:
- GMW3044
- GMW3359
- GMW16722
- GM7112M
- GMW4707
SKU: SFM010HZ
Alt. Part Number: 11502644
GM Test Bolt: 11516106
M12 X 1.75 X 50MM PC9.8 Hex Head GM Test Bolt Plain
This M12 Property Class 9.8 test bolt is made to General Motors specifications and is suitable for torque-tension tests performed to the following GM Specs:
- GM7112M
- GMW4707
- GMW16722
SKU: 11516106
GM Test Nut: 11516091
M12 X 1.75 Style 1 Hex GM Test Nut Zinc
This zinc plated M12 test nut is made to General Motors specifications and is suitable for torque-tension tests performed to the following GM Specs:
- GM7112M
- GMW4707
SKU: 11516091
GM Test Washer: 11502645 (SFM012HZ)
M12 Square GM Test Washer Zinc
This M12 zinc plated hardened square test washer is suitable for torque-tension certification tests performed to the following specs:
- GMW16722
- GM7112M
- GMW4707
SKU: SFM012HZ
Alt. Part Number: 11502645
GM Test Bolt: 11516107
M14 X 2.00 X 60MM PC9.8 Hex Head GM Test Bolt Plain
This M14 Property Class 9.8 test bolt is made to General Motors specifications and is suitable for torque-tension tests performed to the following GM Specs:
- GM7112M
- GMW4707
- GMW16722
SKU: 11516107
GM Test Nut: 11516092
M14 X 2.00 Style 1 Hex GM Test Nut Zinc
This zinc plated M14 test nut is made to General Motors specifications and is suitable for torque-tension tests performed to the following GM Specs:
- GM7112M
- GMW4707
SKU: 11516092
GM Test Washer: 11502646 (SFM014HZ)
M14 Square GM Test Washer Zinc
This M14 zinc plated hardened square test washer is suitable for torque-tension certification tests performed to the following specs:
- GMW16722
- GM7112M
- GMW4707
SKU: SFM014HZ
Alt. Part Number: 11502646
GM Test Bolt: 11516108
M16 X 2.00 X 65MM PC9.8 Hex Head GM Test Bolt Plain
This M16 Property Class 9.8 test bolt is made to General Motors specifications and is suitable for torque-tension tests performed to the following GM Specs:
- GM7112M
- GMW4707
- GMW16722
SKU: 11516108
GM Test Nut: 11516093
M16 X 2.00 Style 1 Hex GM Test Nut Zinc
This zinc plated M16 test nut is made to General Motors specifications and is suitable for torque-tension tests performed to the following GM Specs:
- GM7112M
- GMW4707
SKU: 11516093
GM Test Washer: 11502647 (SFM016HZ)
M16 Square GM Test Washer Zinc
This M16 zinc plated hardened square test washer is suitable for torque-tension certification tests performed to the following specs:
- GMW16722
- GM7112M
- GMW4707
SKU: SFM016HZ
Alt. Part Number: 11502647
GM Test Bolt: 11570102
M10 X 1.50 X 60MM With M14 Hex Head GM ISO 16047 Test Bolt Plain
This plain PC 10.9 test bolt has an M10 body with the head of an M14. It is suitable for use in torque-tension, bearing surface characteristics, and coefficient of friction tests performed to the following specs:
- GMW3044
- GMW3179
- GMW3359
- GMW16730
- ISO 16047
SKU: 11570102
GM Test Washer: SFM010ALUM
M10 Square Aluminum Test Washer Plain
This square aluminum test washer is made to General Motors specifications and is suitable for bearing surface tests performed to the following GM Specs:
- GMW3044
- GMW3359
SKU: SFM010ALUM
GM Test Washer: SFM010SCEC
M10 Square Non-Hardened Test Washer ELPO E-Coat
This square non-hardened test washer is made to General Motors specifications and is suitable for bearing surface tests performed to the following GM Specs:
- GMW3044
- GMW3359
SKU: SFM010SCEC
GM Test Bolt: HHM10150060-WZ102
M10 X 1.50 X 60MM PC10.9 Hex Head ISO 16047
This M10 plain PC 10.9 test bolt has a slightly larger head than a regular M10 test bolt. The head flats measure 16mm across. It is suitable for use in torque-tension and bearing surface characteristics tests performed to the following specs:
- GMW3179
- GMW3284
- GMW3359
- GMW16730
- ISO 16047
- ISO 2320
SKU: HHM10150060-WZ102
Alt. Part Number: HHM10150060-ISO4014
GM Test Nut: 11611982
M10 X 1.50 Class 10 General Motors / ISO 16047
This M10 class 10 test nut has a plain finish and is suitable for use in torque-tension and coefficient of friction tests performed to the following specs:
- GMW3179
- GMW3359
- GMW3044
- GMW16730
- ISO 16047
SKU: 11611982
GM Test Nut: 11611982-S437
M10 X 1.50 Class 10 Ford WZ 102 Hex Test Nut Zinc S437
This M10 X 1.50 class 10 test nut has a zinc S437 finish and is suitable for Torque-Tension Testing per Ford WZ 102.
- Class 10
- Zinc S437 Finish
SKU: 11611982-S437
GM Test Washer Type HL: 11611945
M10 Square GM ISO 16047 Type HL Test Washer Plain
This M10 square test washer has a plain finish and is suitable for use in torque-tension and coefficient of friction tests performed to the following specs:
- GMW3179
- GMW3359
- GMW3044
- GMW16730
- ISO 16047
SKU: 11611945
GM Test Washer Type HH: NPN4
M10 Square Test Washer Plain Type HH
This M10 Type HH test washer has a plain finish and is suitable for use in torque-tension and coefficient of friction tests performed to the following specs:
- GMW3284
- GMW3044
- ISO 16047
- ISO 2320
SKU: NPN4