Bolt Torque Chart - Champion Components Inc
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1Bolt Torque Chart
GRADE 8 BOLT DRILL & TORQUE CHART IN FOOT POUNDS
Decimal
Torque - FT LBS.
Size Threads/Inch
Tap Drill Size
Torque - FT LBS. Dry
Equivalent
Lubricated
1/4” - 20
#7
.201
12
9
1/4” - 28
#3
.213
14
10
5/16” - 24
F
.257
25
18
5/16” - 24
I
.272
25
20
3/8” - 16
5/16
.3125
45
35
3/8” - 24
Q
.332
50
35
7/16” - 14
U
.368
70
55
7/16” - 20
25/64
.3906
80
60
1/2” - 13
27/64
.4219
110
80
1/2” - 20
29/64
.4531
120
90
9/16” - 12
31/64
.4844
150
110
9/16” - 18
33/64
.5156
170
130
5/8” - 11
17/32
.5312
220
170
5/8” - 18
37/64
.5781
240
180
3/4” - 10
21/32
.6562
380
280
3/4” - 16
11/16
.6875
420
320
7/8” - 9
49/64
.7656
600
460
7/8” - 14
13/16
.8125
660
500
1” - 8
7/8
.875
900
680
1” - 12
59/64
.9219
1000
740
1” - 14
15/16
.9375
1020
760
Lubricated Includes: Lubricants - Plating - Hardened Washers
Tap Drills: Allow Approximately 75% Full Thread
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Parent category: Life