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TIGHTENING TORQUE FOR SAE HARDWARE
General Notes related to fasteners:
1. Medium carbon steel fasteners per ASTM A449 Type 1.
2. Stainless steel fasteners per ASTM F593.
3. Threaded holes in parts for fasteners are per System 21, ASME/ANSI B1.3
Medium Carbon Steel SAE Hardware Grade 5 (Unless specified in below table)
Screw/Bolt Size
#10 (Low Carbon Steel)
1/4 in (Low Carbon Steel)
1/4 in
1/4 in Grade 8
5/16 in
5/16 in
3/8 (Low Carbon Steel)
3/8 in
1/2 in
3/4 in
Screw/Bolt Size
#10
1/4 in
1/4 in
5/16 in
5 /16 in
3/8 in
1/2 in
5/8 in
3/4 in
Table 4A: Tightening Torque Range
Typical Application
Bearing Cap
Bearing Cap
All Parts, except Bearing Cap and
Fan Cover
Fan Cover Mounting
Bearing Cap
All Parts, except Bearing Cap
Conduit Box Cover
All Parts, except Conduit Box
All Parts
All Parts
Table 4B: Tightening Torque Range
Stainless Steel SAE Hardware Property Class 50
Typical Application
Bearing Cap
Bearing Cap
All parts, except Bearing Cap
Bearing Cap
All parts, except Bearing Cap
All Parts
All Parts
All parts
All Parts
Torque
(Inch-lbs)
15 - 25
35 - 60
70 – 96
100 - 145
78 - 120
170 - 250
180 – 240
250 – 370
Cover
610 – 920
2150 – 3200
Torque
(Inch-lbs)
15 – 25
35 – 60
60 - 75
78 – 120
130 – 155
230 – 275
550 - 670
1100 – 1340
2000 - 2360
15
GEI-56128H
Torque
(N-m)
1.7 – 2.8
4.0 – 6.8
7.9 – 10.8
11 – 16
8.8 – 14
19 – 28
20 – 27
28 – 42
70 – 100
240 – 360
Torque
(N-m)
1.7 – 2.8
4.0 – 6.8
6.8 – 8.5
8.8 – 14
15 – 18
26 – 31
62 – 76
120 – 150
230 - 270
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