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Mechanical & Optical Instruments
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Torque Limits for Fine Thread Series Steel AN & MS Bolts / inch pounds
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Size
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Min.
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Max.
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Min.
|
Max.
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Min.
|
Max.
|
Min.
|
Max.
|
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8-36
|
12
|
15
|
7
|
9
|
|
|
|
|
|
10-32
|
20
|
25
|
12
|
15
|
25
|
30
|
15
|
20
|
|
1/4-28
|
50
|
70
|
30
|
40
|
80
|
100
|
50
|
60
|
|
5/16-24
|
100
|
140
|
60
|
85
|
120
|
145
|
70
|
90
|
|
3/8-24
|
160
|
190
|
95
|
110
|
200
|
250
|
120
|
150
|
|
7/16-20
|
450
|
500
|
270
|
300
|
520
|
630
|
300
|
400
|
|
1/2-20
|
480
|
690
|
290
|
410
|
770
|
950
|
450
|
550
|
|
9/16-18
|
800
|
1,000
|
480
|
600
|
1,100
|
1,300
|
650
|
800
|
|
5/8-18
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1,100
|
1,300
|
660
|
780
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1,250
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1,550
|
750
|
950
|
|
3/4-16
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2,300
|
2,500
|
1,300
|
1,500
|
2,650
|
3,200
|
1,600
|
1,900
|
|
7/8-14
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2,500
|
3,000
|
1,500
|
1,800
|
3,550
|
4,350
|
2,100
|
2,600
|
|
1-14
|
3,700
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4,500
|
2,200
|
3,300
|
4,500
|
5,500
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2,700
|
3,300
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|
1-1/8-12
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5,000
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7,000
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3,000
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4,200
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6,000
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7,300
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3,600
|
4,400
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|
1-1/4-12
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9,000
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11,000
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4,500
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6,600
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11,000
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13,400
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6,600
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8,000
|
|
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