Appendixes
APPENDIX B: SUGGESTED TORQUE LIMITS FOR STANDARD
HARDWARE
HARDWARE IDENTIFICATION
Standard Head Markings
NOTE: Torque value used should be for lowest grade of hardware used. If a grade 2 nut is used on a
grade 8 bolt, use grade 2 torque value.
NOTE: Toque values specified are for clean dry threads.
Hex Bolts
S.A.E. Grade 2
S.A.E. Grade 8
Other Bolts
Truss Head, grade 2
Appendixes
Appendix B
Page 4
S.A.E. Grade 5
L'9
L'9
The grade of a metric bolt is cast directctly on the
head. Below is an example of a 10.9. the location
and style of the text will vary.
Carriage Bolt, grade 2
(unless marked as above)
*Not available at time of printing