ASTM A354-BD / SAE GRADE 8 Bolt Torque Chart

ASTM A354 covers headed bolt, bent bolt, or threaded rod made of tempered alloy steel 4 inches or below in diameter. A354 grade BD bolts are stronger than A354 grade BC. SAE J429 Grade 8 bolts are made of medium carbon alloy steel. The given below ASTM A354-BD / SAE GRADE 8 Bolt Torque Chart provides you with torque of various corresponding bolt sizes along with its TPI, clamp load and proof load . SAE J429 grade 8 bolts do not exceed 1.5 inches diameter.

Bolt Size TPI ProofLoad (lbs) ClampLoad (lbs)
Tightening Torque (ft lbs)
Lubricated Plain
14 20 3,800 2,850 6 12
516 18 6,300 4,725 12 25
38 16 9,300 6,975 22 44
716 14 12,750 9,563 35 70
12 13 17,050 12,788 53 107
916 12 21,850 16,388 77 154
58 11 27,100 20,325 106 212
34 10 40,100 30,075 188 376
78 9 55,450 41,588 303 606
1 8 72,700 54,525 454 909
118 7 91,550 68,663 644 1,287
114 7 120,000 90,000 938 1,875
138 6 138,600 103,950 1,191 2,382
112 6 168,600 126,450 1,581 3,161
134 5 228,000 171,000 2,494 4,988
2 412 300,000 225,000 3,750 7,500
214 412 390,000 292,500 5,484 10,969
212 4 480,000 360,000 7,500 15,000
234 4 517,650 388,238 8,897 17,794
3 4 626,850 470,138 11,753 23,507
314 4 745,500 559,125 15,143 30,286
312 4 874,650 655,988 19,133 38,266
334 4 101,4300 760,725 23,773 47,545
4 4 1,163,400 872,550 29,085 58,100
* SAE J429 grade 8 bolts do not exceed 1-1/2″ diameter.

The ASTM A354-BD / SAE GRADE 8 bolt torque chart displays lubricated and plain tightening torque for the bolt sizes from 1/4 to 4. These type of bolts are equal in strength to ASTM A490 bolts.


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