Manual

4-1
Chapter 4
Maintenance
Fasteners
Before operating your Brillion machine, check all
hardware for tightness. Use the Tightening Torque Table
reproduced below as a guide. See Table 4-1.
• After a few hours of use, check entire machine and
tighten any loose nuts or bolts. Daily or periodic
checks should be made thereafter.
• Values are given in foot-pounds.
• Use GRADE B lock nuts with GRADE 2 and GRADE 5
bolts only.
• Use GRADE C lock nuts with GRADE 8 bolts only.
Table 4-1: Torque Tightening Table
BOLT/NUT TIGHTENING TORQUES
For Fine Threads Multiply Chart Values by 1.1
Thread Size Bolt Grade Plated, Stover Lock Nuts
GRADE 2 GRADE 5 GRADE 8 GRADE B GRADE C
Figure 4-1
MIN/MAX MIN/MAX
1/4-20
58 12 5/7 7/10
5/16-18
11 17 24 10/12 11/16
3/8-16
20 30 45 15/20 20/28
7/16-14
30 50 70 23/32 31/43
1/2-13
50 75 105 37/50 45/62
9/16-12
70 110 155 50/70 70/95
5/8-11
100 150 210 70/95 90/122
3/4-10
170 270 375 125/165 155/210
7/8-9
165 430 610 275/375 360/462
1-8
250 645 910
1 1/8-7 355 795 1290
1 1/4-7 500 1120 1820
1 3/8-6 745 1670 2710
1 1/2-6 870 1950 3160