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HOMESERVICE MANUALSCHEVROLET2009TAHOE BASE, 4.8 CREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 362 (GENERAL INFORMATION)INTRODUCTIONFASTENERSADHESIVE COATED FASTENERS
2009 Chevrolet Tahoe Base, 4.8 C

Adhesive Coated Fasteners

2009 Chevrolet Tahoe Base, 4.8 CSECTION 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:

  • The fastener and the fastener counterpart are clean and not damaged
  • There is no rust on the fastener
  • The fastener develops the specified minimum torque against its counterpart prior to the fastener seating
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
RENDER: 1.0x

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