PREVOST X3-45 2016 - Standard Torque Specifications

Section 00: GENERAL INFORMATION
PA1593
9
5.1 STANDARD TORQUE SPECIFICATIONS
The following table lists the standard tightening torques for bolts and nuts, relating tightening torque to
thread diameter. Use the following table as a general guide for tightening torques. Use this table only for
the bolts and nuts which do not require a specific torque value. All of the values are for use with dry
solvent-cleaned threads.
TYPE DESCRIPTION THREAD GRADE
RECOMMENDED
TORQUE
lbf-ft (dry) otherwise
specified
Tolerance: ±10%
SAE 1/4-20 unc 5 100 lbf-in (dry)
SAE 1/4-20 unc 8 143 lbf-in (dry)
SAE 1/4-28 unf 5 115 lbf-in (dry)
SAE 1/4-28 unf 8 163 lbf-in (dry)
SAE 5/16-18 unc 5 210 lbf-in (dry)
SAE 5/16-18 unc 8 305 lbf-in (dry)
SAE 5/16-24 unf 2 120 lbf-in (dry)
SAE 5/16-24 unf 5 230 lbf-in (dry)
SAE 5/16-24 unf 8 325 lbf-in (dry)
SAE 3/8-16 unc 5 31
SAE 3/8-16 unc 8 44
SAE 3/8-24 unf 5 35
SAE 3/8-24 unf 8 50
SAE 7/16-14 unc 5 50
SAE 7/16-14 unc 8 70
SAE 7/16-20 unf 5 55
SAE 7/16-20 unf 8 78
SAE 1/2-13 unc 5 75
SAE 1/2-13 unc 8 107
SAE 1/2-20 unf 5 85
SAE 1/2-20 unf 8 120
SAE 9/16-12 unc 5 109
SAE 9/16-12 unc 8 154
SAE 9/16-18 unf 5 122
SAE 9/16-18 unf 8 172
SAE 5/8-11 unc 5 151
SAE 5/8-11 unc 8 211
SAE 5/8-18 unf 5 170