Table of Contents
Advertisement
ENGINEERING STANDARD PROCEDURE
FASTENER TORQUE – TECH BULLETIN
DOCUMENT NBR. :
A0432
1.0
SCOPE:
Assembly Pre-Load / Bolt Torque requirements for Metric Fasteners of Grades A2-70 (304L)
A4-70 (316L) and 8.8, for Sizes M4 to M20.
2.0
METHOD:
SIZE
CLASS
M4
M5
M6
M8
M10
M12
M16
M20
ABOVE TORQUE / PRE-LOAD VALUES ARE BASED ON A COEFFICIENT OF FRICTION OF 0.14 (Anti-seize Lubricant)
0
NEW
1
ADDED250LH
REV
ECN
CHANGE DESCRIPTION
REVISION:
ASSEMBLY TORQUE / ASSEMBLY PRE-LOAD
TIGHTENING TORQUE
Nm
2.20
1.622 [19.46]
4.20
3.097 [37.16]
7.40
5.45 [65.40]
17.80
36.00
62.00
150.00
303.00
EFFECTIVE
0
DATE:
lb/ft [lb/in]
13.12
26.54
45.72
110.62
223.45
UJB
UJB
BY
1of 1
01-17-2006
ASSEMBLY PRE-LOAD
kN
lbf
2.73
612.23
4.47
1002.44
6.31
1415.08
11.60
2601.42
18.40
4126.40
26.90
6032.62
50.90
11414.88
82.00
18389.40
08-15-02
09-26-03
APPV'D
DATE
Advertisement
Table of Contents
