Engineering Information

STRENGTHS OF COARSE THREADED SHEAR BOLTS

 

Shear Bolt Grade Shear Bolt Size Anticipated Failure Load Maximum Horsepower*
Direct Shear Lbs. Torque in Inch/Lbs. 540 RPM 1000 RPM
3-1/2'' Dia. Bolt Circle
6N, 12N, 14N
4-1/4'' Dia. Bolt Circle
35N, 44R, 55N
3-1/2'' Dia. Bolt Circle
35N, 12N, 14N
4-1/4'' Dia. Bolt Circle
35N, 44R, 55N
3-1/2'' Dia. Bolt Circle
35N, 12N, 14N
4-1/4'' Dia. Bolt Circle
35N, 44R, 55N
2 1/4
5/16
3/8
7/16
1/2
2798
4372
6295
8569
11192
4896
7651
11017
14995
19586
5946
9290
13378
18209
23783
42
66
94
128
168
51
80
115
156
204
78
121
175
238
311
94
147
212
289
377
5 1/4
5/16
3/8
7/16
1/2
4516
7056
10161
13830
18064
7903
12349
17782
24203
31612
9597
14995
21592
29390
38386
68
106
152
207
271
82
128
185
252
329
125
196
282
384
502
152
238
343
466
609
8 1/4
5/16
3/8
7/16
1/2
6381
9971
14358
19543
25525
11167
17449
25127
34200
44670
13560
21188
30511
41529
54242
96
150
215
293
383
116
182
261
356
465
177
277
399
543
709
215
336
484
659
861

These figures are based on SAE Minimum Tensile Strengths. Production bolts may be twenty percent stronger than these minimum specifications. Shear strength equals seventy-five percent of the tensile strength.

*Refer to Horsepower Rating Chart

Horsepower = (Torque (LB. FT.) X RPM) / 5262