TORQUE ASTM A354-BD / SAE GRADE 8

Bolt SizeTPIProof Load (lbs)Clamp Load (lbs)Tightening Torque (ft lbs)
Lubricated
Tightening Torque (ft lbs)
Plain
1/4"203,8002,850612
5/16"186,3004,7251225
3/8"169,3006,9752244
7/16"1412,7509,5633570
1/2"1317,05012,78853107
9/16"1221,85016,38877154
5/8"1127,10020,325106212
3/4"1040,10030,075188376
7/8"955,45041,588303606
1"872,70054,525454909
1 1/8"791,55068,6636441,287
1 1/4"7120,00090,0009381,875
1 3/8"6138,600103,9501,1912,382
1 1/2"6168,600126,4501,5813,161
1 3/4"5228,000171,0002,4944,988
2"4 1/2300,000225,0003,7507,500
2 1/4"4 1/2390,000292,5005,48410,969
2 1/2"4480,000360,0007,50015,000
2 3/4"4517,650388,2388,89717,794
3"4626,850470,13811,75323,507
3 1/4"4745,500559,12515,14330,286
3 1/2"4874,650655,98819,13338,266
3 3/4"41,014,300760,72523,77347,545
4"41,163,400872,55029,08558,100