Standard Torque Specifications; Sae - PREVOST H3-41 Maintenance Manual

The metric fasteners used on the coach are designed to new standards and may not yet be manufactured
by some non-domestic fastener suppliers. In general, except for special applications, the common sizes
and pitches are:
M 8 X 1.25;
M 10 X 1.5;
M 12 X 1.75;
M 14 X 2;

4.2 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.

4.2.1 SAE

TYPE DESCRIPTION
SAE 1/4-20
SAE 1/4-20
SAE 1/4-28
SAE 1/4-28
SAE 5/16-18
SAE 5/16-18
SAE 5/16-24
SAE 5/16-24
SAE 5/16-24
SAE 3/8-16
SAE 3/8-16
SAE 3/8-24
SAE 3/8-24
SAE 7/16-14
SAE 7/16-14
SAE 7/16-20
SAE 7/16-20
SAE 1/2-13
SAE 1/2-13
SAE 1/2-20
SAE 1/2-20
THREAD GRADE
unc 5
unc 8
unf 5
unf 8
unc 5
unc 8
unf 2
unf 5
unf 8
unc 5
unc 8
unf 5
unf 8
unc 5
unc 8
unf 5
unf 8
unc 5
unc 8
unf 5
unf 8
PA1621 Maintenance Manual All Series | Section 00 revised Sept 2019
SECTION 00 : GENERAL INFORMATION
RECOMMENDED
TORQUE
Tolerance: ±10%
96 lb-in (11 Nm)
135 lb-in (15 Nm)
106 lb-in (12 Nm)
149 lb-in (17 Nm)
188 lb-in (21 Nm)
266 lb-in (30 Nm)
131 lb-in (15 Nm)
202 lb-in (23 Nm)
286 lb-in (32 Nm)
27 lb-ft (37 Nm)
38 lb-ft (52 Nm)
30 lb-ft (41 Nm)
42 lb-ft (57 Nm)
43 lb-ft (58 Nm)
60 lb-ft (81 Nm)
46 lb-ft (62 Nm)
65 lb-ft (88 Nm)
65 lb-ft (88 Nm)
92 lb-ft (125 Nm)
71 lb-ft (96 Nm)
100 lb-ft (136 Nm)
9