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Adhesive Coated Fasteners

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Fig 1: Adhesive Coated Fasteners
GM171892Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Prevailing Torque Nut, Center Lock Type
2 Prevailing Torque Nut, Top Lock Type
3 Prevailing Torque Nut, Nylon Patch Type
4 Prevailing Torque Nut, Nylon Washer Insert Type
5 Prevailing Torque Nut, Nylon Insert Type
6 Prevailing Torque Bolt, Dry Adhesive Coating Type
7 Prevailing Torque Bolt, Thread Profile Deformed Type
8 Prevailing Torque Bolt, Nylon Strip Type
9 Prevailing Torque Bolt, Out-of-Round Thread Area Type

A prevailing torque fastener may be reused ONLY if:

Metric Prevailing Torque Fastener Minimum Torque Development

Application Specification
Metric English
All Metal Prevailing Torque Fasteners
  • 6 mm
 0.4 N.m 4 lb in
  • 8 mm
 0.8 N.m 7 lb in
  • 10 mm
 1.4 N.m 12 lb in
  • 12 mm
 2.1 N.m 19 lb in
  • 14 mm
 3 N.m 27 lb in
  • 16 mm
 4.2 N.m 37 lb in
  • 20 mm
 7 N.m 62 lb in
  • 24 mm
 10.5 N.m 93 lb in
Nylon Interface Prevailing Torque Fasteners
  • 6 mm
 0.3 N.m 3 lb in
  • 8 mm
 0.6 N.m 5 lb in
  • 10 mm
 1.1 N.m 10 lb in
  • 12 mm
 1.5 N.m 13 lb in
  • 14 mm
 2.3 N.m 20 lb in
  • 16 mm
 3.4 N.m 30 lb in
  • 20 mm
 5.5 N.m 49 lb in
  • 24 mm
 8.5 N.m 75 lb in
English Prevailing Torque Fastener Minimum Torque Development

Application Specification
Metric English
All Metal Prevailing Torque Fasteners
  • 1/4 in
 0.5 N.m 4.5 lb in
  • 5/16 in
 0.8 N.m 7.5 lb in
  • 3/8 in
 1.3 N.m 11.5 lb in
  • 7/16 in
 1.8 N.m 16 lb in
  • 1/2 in
 2.3 N.m 20 lb in
  • 9/16 in
 3.2 N.m 28 lb in
  • 5/8 in
 4 N.m 36 lb in
  • 3/4 in
 7 N.m 54 lb in
Nylon Interface Prevailing Torque Fasteners
  • 1/4 in
 0.3 N.m 3 lb in
  • 5/16 in
 0.6 N.m 5 lb in
  • 3/8 in
 1 N.m 9 lb in
  • 7/16 in
 1.3 N.m 12 lb in
  • 1/2 in
 1.8 N.m 16 lb in
  • 9/16 in
 2.5 N.m 22 lb in
  • 5/8 in
 3.4 N.m 30 lb in
  • 3/4 in
 5 N.m 45 lb in
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