GM_6194M_2004

ENGINEERINGSTANDARDS

Material Specification Adhesives GM6175M/GM6194M

Performance Requirements for Adhesive Coated Threaded Fasteners

1 Scope This specification establishes adhesive perform-ance requirements and the procedures to deter-mine the locking ability of preapplied adhesive coatings on externally threaded fasteners. This specification is written for the purpose of identify-ing and controlling key material properties of ad-hesive coated externally threaded fasteners. 1.1 Material Description. Two grades of material are covered by this specification. In addition to the regular grade, this specification describes a temperature resistant material that retains locking ability at 200C, while also conforming to the regular requirements of this specification. 1.1.1 Material Identification. These materials are designated with the following GM numbers: GM6175MMax temperature 135C GM6194MMax temperature 200C

1.2 Typical Application. This specification is for externally threaded fasteners that require a pre-applied adhesive for chemical locking to prevent self loosening due to shock and vibration. Fas-teners with these materials shall not be reused. A third GM preapplied thread locking specifica-tion, GM6124M, is available for fasteners that require lower thread locking performance. 1.3 Remarks. 1.3.1 The preapplied thread locking adhesive compounds are dry to the touch and remain inert on externally threaded fasteners until they are engaged into the mating internal thread. The shearing action or forces of assembly activate the adhesive, which, after proper curing time and temperature, harden to form a chemical bond between the mating threads. This chemical ad-hesive bond prevents fasteners loosening from shock and vibration. The adhesive shall be dry to touch when properly applied and be compatible with automatic feed equipment used in the instal-lation of fasteners. The applied compound shall have no adverse effect on the health of personnel when used for its intended purpose.

2 References Note: Only the latest approved standards are applicable unless otherwise specified. 2.1 External Standards/Specifications.

None.

2.2 GM Standards/Specifications. GM6124M GMW3001 GM9084P GMW3059 GM9505P GMW3179

3 Requirements 3.1 Definition of Terms. 3.1.1 Prevailing On-Torque. The highest torque measured during nut installation in the on direc-tion. The nut must be in complete engagement with the adhesive coated portion in the male thread. 3.1.2 Breakaway Torque. The torque required in the off direction to break the cured adhesive be-tween the threads of an unseated (zero tension) nut and bolt assembly. 3.1.3 Prevailing Off-Torque. The maximum torque measured in the off direction within 360 degree of rotation after the adhesive breakaway torque measurement. 3.1.4 Break Loose Torque. The torque required in the off direction to break the hardened adhe-sive between the threads of a seated nut and bolt assembly. 3.1.5 Minimum Average. The minimum accept-able average value of a population of data. 3.1.6 Individual Minimum. The minimum ac-ceptable individual value of a population of data. 3.2 Test Methods. 3.2.1 Specimen Preparation. M10 x 1.5 test bolts, PN 1151610, coated with GMW3179, Code A (phosphate & oil finish) and test nuts, PN 11516090, shall be used for initial material ap-proval. Test bolts and nuts are available from the Wilson-Garner Company. 3.2.1.1 All specimens shall be gauged to assure conformance with dimensional requirements,

Copyright 2004 General Motors Corporation All Rights Reserved

October 2004 Originating Department: North American Engineering Standards Page 1 of 7

Copyright General Motors North America Reproduced by IHS under license with GM Not for ResaleNo reproduction or networking permitted without license from IHS

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GM6175M/GM6194M GM ENGINEERING STANDARDS when gauging of individual specimens is not per-formed, SPC analysis from the fastener supplier may be used. 3.2.1.2 Before use, test specimens shall be ex-amined for damaged threads and damaged bolts or nuts shall be rejected. 3.2.1.3 During assembly, any bolt-nut pair show-ing excessively tight or excessively loose fits or sticking due to burrs shall be rejected. 3.2.1.4 A minimum of five nut/bolt assemblies shall be prepared for each test performed. 3.2.2 Performance of Test. During the complete performance of the test, the nut shall be turned while the test bolt is restrained from turning. If the nut is restrained so that the torque reading is not adversely affected it is permissible to turn the test bolt. 3.2.3 Prevailing On-Torque. The test nut shall be assembled onto the preapplied adhesive coated area of the bolt until the full thickness of the nut is engaged into the adhesive. The maxi-mum prevailing on-torque shall be measured and recorded during the next 360 degrees of rotation, while the fastener is in constant motion. The speed of rotation shall be 10 to 20 rpm. This test is required for production quality control purposes (use the production fastener) and initial chemical approval (use the M10 test fastener only). 3.2.4 Breakaway/Prevailing Off-Torque. As-semble adhesive coated bolts and nuts per 3.2.3.

Activated adhesive bolt-nut assembly shall be allowed to cure at 25 2C for 72 h. The fastener shall then be rotated in the off direction with a torque measuring device of suitable capacity and sensitivity. Torque readings shall be measured and recorded at breakaway torque and within 360 degrees of further rotation for the maximum pre-vailing off-torque. This test is required for produc-tion quality control purposes (use the production fastener) and initial chemical approval (use the M10 fastener only). Note: Cure time may be reduced per supplier's recommendations. 3.2.5 Immersion. Assemble adhesive coated bolts and nuts per 3.2.3. Activated adhesive bolt-nut assemblies shall be allowed to cure at 25 2C for 72 h. After curing, immerse GM6175M for 168 h, or GM6194M for 1000 h, at the temperatures as listed in Table 2. Contact any GM Dealership for instructions on how to purchase each fluid. Upon removal of the test specimens from the test fluids, the bolt-nut assemblies shall be held at 25 2C for a minimum of 1 h. The breakaway and prevailing off-torque shall be determined in accordance with 3.2.4. This test is required for initial chemical approval only.

Table 1: Prevailing On, Break Away and Prevailing Off Torque Requirements

Test Prevailing On

Size Max.Minimum Average

Minimum Individual

Minimum Average

Minimum Individual

M6x1 0.6 1.0 0.5 0.3 0.1M8x1.25 1.5 8.5 3.4 1.7 0.7M10x1.5 2.0 22.0 10.2 5.6 3.4M12x1.75 3.5 27.0 11.3 7.8 4.0M14x2 5.5 62.1 11.9 14.1 5.1M16x2 8.0 89.3 35.6 24.9 6.8

Break Away Prevailing Off


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GM ENGINEERING STANDARDS GM6175M/GM6194M

Table 2: Immersion Requirements

Substance Part No. Temperature Mobil 1 5W30 Syn-thetic

12345885 150C Engine Oil Dextron III 12378470 150C Transmission Fluid 50/50 Dex-Cool 12346290 100C Coolant and Water Distilled Water N/A 100C Delco Supreme II Brake Fluid

12377967 150C Unleaded Gaso-line, 87 Octane

N/A RT

3.2.6 Cyclic Temperatures. The test procedure is identical with 3.2.3 except after 72 h curing time at 25 2C, the adhesive bolt-nut assem-blies shall be placed in a 150 2C oven and held for 2 h for GM6175, or in a 200 2C oven and held for 2 h for GM6194. After this exposure to heat, expose to 30C for 2 h. The adhesive bolt-nut assemblies shall then be held at 25 2C for a minimum of 1 h. The breakaway and prevail-ing off-torques shall be determined in accordance with 3.2.3. This test is required for initial chemical approval only. 3.2.7 Heat Age. Test procedure is identical with 3.2.3 except after 72 h curing time at 25 2C, the adhesive bolt-nut assemblies shall be placed in a 135 2C oven for GM6175M, or a 200 2C oven for GM6194M for 500 h. The specimens shall be removed and cooled to 25 2C for a minimum of 1 h. The breakaway and prevailing off-torques shall be determined in accordance with 3.2.3. This test is required for initial chemical approval only. 3.2.8 Hot Strength. Test procedure is identical with 3.2.3 except after 72 h curing time at 25 2C, the adhesive bolt-nut assembly shall be placed in a 135 2C oven for GM6175M or 200 2C oven for GM6194M for 2 h. The adhesive breakaway and prevailing off-torques shall be measured at the elevated temperature in accor-dance with 3.2.3. This test is required for initial chemical approval only. 3.3 As Received Properties. 3.3.1 Color of the adhesive shall be standard with the supplier unless otherwise specified by the purchaser. Use of nonspecified color adhesive shall be grounds for rejection except where, for engineering reasons or identification considera-

tions, a waiver by the users engineering depart-ment is granted to applicator. Such waiver shall be kept on file and be available upon request. Copy of waiver shall accompany all shipments of parts. 3.3.2 The coated fastener shall meet require-ments of the specification when stored in con-tainer under normal plant conditions for 12 months. Humidity and heat due to poor storage locations could substantially shorten shelf life. Parts should not be stored in wet areas subjected to over 55C temperature. 3.3.3 After exposure to 60 2C for 120 h the coated fasteners shall conform to the require-ments of this specification. 3.3.4 After exposure to -30 2C for 120 h the coated fastener shall conform to the requirements of this specification. 3.3.5 The length and location of the adhesive coating shall be as specified on the print (gener-ally 1.5 times the nominal diameter of externally threaded fasteners). If the coating extends to the end of the fastener the adhesive coating shall allow finger effort starting for 360 degrees after first engagement of the part. 3.3.6 Shortened lengths and widths of adhesive may substantially affect performance properties. Actual values for nonstandard lengths and widths are to be determined upon actual parts. 3.3.7 The compound shall not be corrosive to steel, aluminum or copper alloys, nor shall it have a degrading effect on the corrosion resistance of the basic finish specified on the part. Adhe-sive/bolt assemblies are to be tested using the GM9505P Cycle J environmental test procedure against a control group of fasteners without ad-hesive. The adhesive/bolt assemblies must not perform worse than the control group. Production parts and finishes are also required to meet GM9505P Cycle J. The threaded areas of adhe-sive coated fasteners are exempt from salt spray requirements. 3.3.8 Thread adhesives affect the torque tension relationship of fastener joints. Torque values shall be adjusted as per Table 3 over baseline non-adhesive coated parts to obtain similar tension loads. 3.3.8.1 Torque tension qualification of new mate-rials shall be per GM9084P for bolt adhesive applications except 2.2 and 2.3 should be replaced with a phosphate-oil nut meeting GM specifications. 3.3.9 The prevailing on-torque shall conform to the values shown in Table 4 when tested in ac-


October 2004 Page 3 of 7


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GM6175M/GM6194M GM ENGINEERING STANDARDS cordance with 3.1.2.1, Test Methods. However, torque values for internally threaded fasteners of reduced or otherwise special height, tapped holes, special alloys, nonstandard surface coat-ings, shall be negotiated between the suppliers and purchasers. Table A1 in Appendix A is a reference table for production parts. 3.3.10 Chemical manufacturer shall supply sam-ples of wet chemical and pre-applied parts per direction of control division for chemical finger printing. Compounds shall not be changed, re-formulated or altered in any manner without writ-ten notification to control division. Revalidation of changed compound is required before approval. Changes in formulation differing from chemical spectrums on file constitutes grounds for rejection of all shipments of products from applicator. Chemical Compound shall meet the requirements of GMW3059. 3.4 Polymerized (Cured) Properties. 3.4.1 The breaking and prevailing off-torques for the polymerized adhesive when tested after the normal 72 h cure shall conform to values shown

in Table 1 when tested in accordance with 3.2.4, Breakaway Prevailing Off-Torque Test Method. 3.4.2 The breaking and prevailing off-torque shall conform to the values shown in Table 4 after im-mersion in water, gasoline, methanol, glycol and oil when tested in accordance with 3.2.5, Immer-sion Test Method. 3.4.3 The breakaway and prevailing off-torques shall conform to the cyclic values shown in Table 4 after cyclic aging at 150 2C (GM6175M) or 200 2C (GM6194M) and 30C when tested in accordance with 3.2.6, Cyclic Temperatures Test Method. 3.4.4 The breakaway and prevailing off-torque shall conform to the values shown in Table 4 after aging 500 h at 135C for GM6175M or 200C for GM6194M when tested in accordance with 3.2.7, Heat Age Test Method. 3.4.5 The breakaway and prevailing off-torque of the temperature resistant adhesive coated bolt-nut assemblies shall conform to the hot strength values shown in Table 4 when tested at 135C for GM6175M, or 200C for GM6194M in accor-dance with 3.2.8, Hot Strength Test Method.

Table 3: Torque Tension Requirements

Spec No. M-6 x 1.0 M-8 x 1.25 M-10 x 1.5 M-12 x 1.75 M-14 x 2.0 M-16 x 2.0

GM6175M 10-20% 10-20% 0-10% 0-15% 5-20% 0-20%

GM6194M 10-20% 10-20% 0-10% 0-15% 5-20% 0-20% Values represent the increase in torque required to achieve the proper clamp load.




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Table 4: Torque Requirements for M10 Externally Threaded Fasteners (Nm)

Test Minimum Average

Minimum Individual

Water Immersion2 Break 29.9 11.9

Prevailing 6.8 2.8

Gasoline Immersion2 Break 29.4 11.9

Prevailing 7.9 3.4

Glycol/Water Immersion2 Break 22.6 9

Prevailing 6.8 2.8

ATF Immersion2 Break 15.8 6.2

Prevailing 3.4 1.4

Oil Immersion Break 12.4 5.1

Prevailing 2.8 1.1

Brake Fluid Immersion Break 4.5 1.1

Prevailing 2.3 0.9

Gas/MEOH Immersion Break 22.6 9

Prevailing 7.9 3.4

Ethanol Immersion Break 28.2 11.3

Prevailing 9.0 3.4

Diesel #2 Immersion Break 31.6 12.4

Prevailing 7.9 3.4

Cyclic Break 25.4 11.3

Prevailing 5.6 3.4

Heat Age Break 25.4 10.2

Prevailing 2.8 1.1

Hot Strength Break 10.6 8

Prevailing 6.1 4

4 Manufacturing Process Not applicable.

5 Rules and Regulations 5.1 All materials supplied to this specification must comply with the requirements of GMW3001, Rules and Regulations for Material Specifica-tions. 5.2 All materials supplied to this specification must comply with the requirements of GMW3059, Restricted and Reportable Substances for Parts.

5.3 Source Approval. No shipment shall be made by any source prior to testing for confor-mance to this specification and plant production trials with subsequent approval by the control division. User divisions shall test their application if a variance exists. 5.3.1 Test procedures and methods marked with * denote engineering tests, these are not in-tended to be quality control procedures. Adhesive Suppliers are required to run quality control tests with M10 fasteners for Prevailing-on torque, 72 h room temperature cure Breakaway and Prevail-ing-off torque in a per lot basis. Process centers are required to conduct quality control tests for Prevailing-on torque, 72 h room temperature cure




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GM6175M/GM6194M GM ENGINEERING STANDARDS Breakaway and Prevailing-off torque on a per lot basis. Test records will be made available upon request. 5.4 Inspection and Rejection. All shipments of material or parts under contract or purchase or-der manufactured to this specification shall be equivalent in every respect to the initial samples approved by the purchaser. There shall be no changes in either formulation or manufacturing processes permitted without prior notification and approval by engineering. Lack of notification by the supplier constitutes grounds for rejection of any shipment. While samples may be taken from incoming shipments and checked for confor-mance to this specification, the supplier shall ac-cept the responsibility for incoming shipments meeting this specification without dependence upon purchaser's inspection. 5.4.1 Specification is written to cover basic prop-erties of prepared thread adhesives, changes in finish, nonstandard thread dimensions and mate-rials will cause performance differences. Parts should be tested in actual application to insure materials perform to joint requirements.

6 Approved Sources Engineering qualifications of an approved source is required for this specification. Only sources listed in the GM Materials File (i.e., MATSPC) under this specification number have been quali-fied by engineering as meeting the requirements of this specification.

7 Coding System This material specification shall be referenced in other documents, drawings, VTS, CTS, etc. as follows: Material per GM6175/GM6194M

8 Release and Revisions 8.1 Release. This standard was issued in Janu-ary 1977. 8.2 Revisions

Rev Approval Date

Description (Organization)

G OCT 1995 Revised Table1; Spec GM6193M deleted (GMNA)

H JUN 2004 Complete revision including modification to Global format (GMNA Fastening Special-ist Team)




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Appendix A Table A1: Reference Break Away & Prevailing Torques for Externally Threaded

Production Fasteners

Size

TestMinimum Average

Minimum Individual

Minimum Average

Minimum Individual

Minimum Average

Minimum Individual

Minimum Average

Minimum Individual

Minimum Average

Minimum Individual

Water Immersion Break 3.2 2.0 16.0 4.5 59.3 23.7 87.0 35.0 125.2 50.8Prevailing 0.7 0.5 3.4 1.7 11.9 4.5 20.3 7.9 31.6 12.4

Gasoline Immersion Break 1.9 0.7 5.6 2.3 28.2 11.3 73.4 29.4 82.5 32.8Prevailing 1.0 0.4 1.6 0.7 7.9 3.4 18.6 7.3 20.9 8.5

Glycol/Water Immersion Break 2.5 1.5 10.0 5.6 56.5 22.6 90.4 36.2 92.6 37.3Prevailing 1.0 0.5 4.5 1.7 10.2 5.6 20.9 8.5 22.6 13.0

ATF Immersion Break 1.7 0.5 5.6 2.3 27.1 10.7 31.6 12.4 54.2 21.5Prevailing 0.3 0.1 1.1 0.5 7.9 3.4 4.5 1.7 12.4 4.5

Oil Immersion Break 2.0 1.5 4.0 1.7 22.6 9.0 39.5 15.8 53.7 21.5Prevailing 0.7 0.5 0.9 0.6 5.6 2.3 12.4 5.1 13.6 5.6

Brake Fluid Immersion Break 0.5 0.3 2.3 0.9 13.0 5.1 39.0 15.8 37.3 14.7Prevailing 0.2 0.1 1.1 0.5 6.8 2.3 10.7 4.5 13.6 5.6

Gas/MEOH Immersion Break 1.3 0.6 11.3 3.9 33.9 13.6 67.8 27.1 113.0 45.2Prevailing 0.5 0.2 2.1 1.1 9.0 3.4 19.2 7.9 22.6 9.0

Ethanol Immersion Break 2.2 1.0 8.0 4.5 45.2 18.1 84.7 40.7 93.8 37.3Prevailing 0.95 0.4 2.8 1.1 11.3 4.5 19.2 7.9 30.5 12.4

Diesel #2 Immersion Break 3.7 1.6 7.9 3.4 54.2 22.6 103.9 41.8 96.0 38.4Prevailing 1.8 0.9 3.4 1.0 9.0 3.4 16.9 6.8 24.3 9.6

Cyclic Break 4.0 3.0 16.9 7.3 64.4 26.0 107.3 42.9 135.6 54.2Prevailing 1.3 1.0 2.8 1.1 16.9 6.8 25.4 10.2 36.2 14.7

Heat Age Break 5.0 3.0 13.0 5.1 32.2 13.0 45.2 18.1 49.7 19.8Prevailing 1.3 1.0 2.3 0.9 5.6 2.3 9.0 3.4 11.3 5.6

Hot Strength Break 2.6 2.0 7.7 6.0 20.6 15.0 37.0 30.0 46.0 40.0Prevailing 2.0 2.0 4.7 3.0 12.0 9.5 27.0 20.0 26.0 20.0

M16x2 M6x1 M8x1.25 M12x1.75 M14x2




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1 Scope1.1MaterialDescription. Two grades of material1.1.1 MaterialIdentification. These materials a

1.2TypicalApplication. This specification is f1.3Remarks.1.3.1 The preapplied thread locking adhesive compounds are dry to the touch and remain inert on externally threaded fasteners until they are engaged into the mating internal thread. The shearing action or forces of assembly activate the adhesive, which,

2 References2.1 External Standards/Specifications.2.2 GM Standards/Specifications.

3 Requirements3.1 Definition of Terms.3.1.1 Prevailing On-Torque. The highest torque measured during nut installation in the on direction. The nut must be in complete engagement with the adhesive coated portion in the male thread.3.1.2 Breakaway Torque. The torque required in the off direction to break the cured adhesive between the threads of an unseated (zero tension) nut and bolt assembly.3.1.3 Prevailing Off-Torque. The maximum torque measured in the off direction within 360 degree of rotation after the adhesive breakaway torque measurement.3.1.4 Break Loose Torque. The torque required in the off direction to break the hardened adhesive between the threads of a seated nut and bolt assembly.3.1.5 Minimum Average. The minimum acceptable average value of a population of data.3.1.6 Individual Minimum. The minimum acceptable individual value of a population of data.

3.2 Test Methods.3.2.1 Specimen Preparation. M10 x 1.5 test bolts, PN 1151610, coated with GMW3179, Code A (phosphate & oil finish) and test nuts, PN 11516090, shall be used for initial material approval. Test bolts and nuts are available from the Wilson-Garner Company3.2.1.1 All specimens shall be gauged to assure conformance with dimensional requirements, when gauging of individual specimens is not performed, SPC analysis from the fastener supplier may be used.3.2.1.2 Before use, test specimens shall be examined for damaged threads and damaged bolts or nuts shall be rejected.3.2.1.3 During assembly, any bolt-nut pair showing excessively tight or excessively loose fits or sticking due to burrs shall be rejected.3.2.1.4 A minimum of five nut/bolt assemblies shall be prepared for each test performed.

3.2.2 Performance of Test. During the complete performance of the test, the nut shall be turned while the test bolt is restrained from turning. If the nut is restrained so that the torque reading is not adversely affected it is permissible to turn the te3.2.3 Prevailing On-Torque. The test nut shall be assembled onto the preapplied adhesive coated area of the bolt until the full thickness of the nut is engaged into the adhesive. The maximum prevailing on-torque shall be measured and recorded during the3.2.4 Breakaway/Prevailing Off-Torque. Assemble adhesive coated bolts and nuts per 3.2.3. Activated adhesive bolt-nut assembly shall be allowed to cure at 25 ( 2(C for 72 h. The fastener shall then be rotated in the off direction with a torque measurin3.2.5 Immersion. Assemble adhesive coated bolts a3.2.6 Cyclic Temperatures. The test procedure is identical with 3.2.3 except after 72 h curing time at 25 ( 2(C, the adhesive bolt-nut assemblies shall be placed in a 150 ( 2(C oven and held for 2 h for GM6175, or in a 200 ( 2(C oven and held for 23.2.7 Heat Age. Test procedure is identical with 3.2.8 Hot Strength. Test procedure is identical with 3.2.3 except after 72 h curing time at 25 ( 2(C, the adhesive bolt-nut assembly shall be placed in a 135 ( 2(C oven for GM6175M or 200 ( 2(C oven for GM6194M for 2 h. The adhesive breakaway and p

3.3As Received Properties.3.3.1 Color of the adhesive shall be standard with the supplier unless otherwise specified by the purchaser. Use of nonspecified color adhesive shall be grounds for rejection except where, for engineering reasons or identification considerations, a waive3.3.2 The coated fastener shall meet requirements of the specification when stored in container under normal plant conditions for 12 months. Humidity and heat due to poor storage locations could substantially shorten shelf life. Parts should not be store3.3.3 After exposure to 60 ( 2(C for 120 h the coated fasteners shall conform to the requirements of this specification.3.3.4 After exposure to -30 ( 2(C for 120 h the coated fastener shall conform to the requirements of this specification.3.3.5 The length and location of the adhesive coating shall be as specified on the print (generally 1.5 times the nominal diameter of externally threaded fasteners). If the coating extends to the end of the fastener the adhesive coating shall allow fin3.3.6 Shortened lengths and widths of adhesive may substantially affect performance properties. Actual values for nonstandard lengths and widths are to be determined upon actual parts.3.3.7 The compound shall not be corrosive to steel, aluminum or copper alloys, nor shall it have a degrading effect on the corrosion resistance of the basic finish specified on the part. Adhesive/bolt assemblies are to be tested using the GM9505P Cycle J3.3.8 Thread adhesives affect the torque tension relationship of fastener joints. Torque values shall be adjusted as per Table 3 over baseline non-adhesive coated parts to obtain similar tension loads.3.3.8.1 Torque tension qualification of new materials shall be per GM9084P for bolt adhesive applications except 2.2 and 2.3 should be replaced with a phosphate-oil nut meeting GM specifications.

3.3.9 The prevailing on-torque shall conform to the values shown in Table 4 when tested in accordance with 3.1.2.1, Test Methods. However, torque values for internally threaded fasteners of reduced or otherwise special height, tapped holes, special alloy3.3.10 Chemical manufacturer shall supply samples of wet chemical and pre-applied parts per direction of control division for chemical finger printing. Compounds shall not be changed, reformulated or altered in any manner without written notification to

3.4 Polymerized (Cured) Properties.3.4.1 The breaking and prevailing off-torques for the polymerized adhesive when tested after the normal 72 h cure shall conform to values shown in Table 1 when tested in accordance with 3.2.4, Breakaway Prevailing Off-Torque Test Method.3.4.2 The breaking and prevailing off-torque shall conform to the values shown in Table 4 after immersion in water, gasoline, methanol, glycol and oil when tested in accordance with 3.2.5, Immersion Test Method.3.4.3 The breakaway and prevailing off-torques sh3.4.4 The breakaway and prevailing off-torque shall conform to the values shown in Table 4 after aging 500 h at 135(C for GM6175M or 200(C for GM6194M when tested in accordance with 3.2.7, Heat Age Test Method.3.4.5 The breakaway and prevailing off-torque of the temperature resistant adhesive coated bolt-nut assemblies shall conform to the hot strength values shown in Table 4 when tested at 135(C for GM6175M, or 200(C for GM6194M in accordance with 3.2.8, Ho

4 Manufacturing Process5 Rules and Regulations5.1 All materials supplied to this specification must comply with the requirements of GMW3001, Rules and Regulations for Material Specifications.5.2 All materials supplied to this specification must comply with the requirements of GMW3059, Restricted and Reportable Substances for Parts.5.3 Source Approval. No shipment shall be made by any source prior to testing for conformance to this specification and plant production trials with subsequent approval by the control division. User divisions shall test their application if a variance ex5.3.1 Test procedures and methods marked with * denote engineering tests, these are not intended to be quality control procedures. Adhesive Suppliers are required to run quality control tests with M10 fasteners for Prevailing-on torque, 72 h room tempera

5.4 Inspection and Rejection. All shipments of material or parts under contract or purchase order manufactured to this specification shall be equivalent in every respect to the initial samples approved by the purchaser. There shall be no changes in eithe5.4.1 Specification is written to cover basic properties of prepared thread adhesives, changes in finish, nonstandard thread dimensions and materials will cause performance differences. Parts should be tested in actual application to insure materials per

6 Approved Sources7 Coding System8 Release and Revisions8.1 Release. This standard was issued in January 1977.8.2 Revisions

Appendix A

GM_6194M_2004

Documents

Transcript of GM_6194M_2004