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Standard Torque for Dry, Zinc Plated and Steel Fasteners (Inch Series)
| Grade 1, 5 & | SAE Grade 1 Bolts, Screws, Studs & | SAE Grade 5 Bolts, Screws, Studs & | SAE Grade 8 Bolts, Screws, Studs & | |||||||||||
Thread Size | 8 with Thin | Sems with Regular Height Nuts | Sems with Regular Height Nuts | Sems with Regular Height Nuts | |||||||||||
| Height Nuts | (SAE J995 Grade 2 or Stronger Nuts) | (SAE J995 Grade 2 or Stronger Nuts) | (SAE J995 Grade 5 or Stronger Nuts) | |||||||||||
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# 6 | 10 | + 2 | 13 | + 2 | 147 | + 23 | 15 | + 2 | 169 | + 23 | 23 | + 3 | 262 | + 34 | |
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# 6 | 17 | + 2 | 192 | + 23 | 25 | + 3 | 282 | + 34 | |||||||
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# 8 | 13 | + 2 | 25 | + 5 | 282 | + 56 | 29 | + 3 | 328 | + 34 | 41 | + 5 | 463 | + 56 | |
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# 8 | 31 | + 4 | 350 | + 45 | 43 | + 5 | 486 | + 56 | |||||||
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# 10 | 18 | + 2 | 30 | + 5 | 339 | + 56 | 42 | + 5 | 475 | + 56 | 60 | + 6 | 678 | + 68 | |
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# 10 | 48 | + 5 | 542 | + 56 | 68 | + 7 | 768 | + 79 | |||||||
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1/4 | 48 | + 7 | 53 | + 7 | 599 | + 79 | 100 | + 10 | 1130 | + 113 | 140 | + 15 | 1582 | + 169 | |
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1/4 | 53 | + 7 | 65 + 10 | 734 + 113 | 115 + 12 | 1299 | + 136 | 160 | + 17 | 1808 | + 192 | ||||
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5/16 | 115 + 15 | 105 | + 15 | 1186 + 169 | 200 | + 25 | 2260 | + 282 | 300 | + 30 | 3390 | + 339 | |||
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5/16 | 138 | + 17 | 128 | + 17 | 1446 | + 192 | 225 | + 25 | 2542 | + 282 | 325 | + 33 | 3672 | + 373 | |
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3/8 | 16 | + 2 | 16 | + 2 | 22 | + 3 | 30 | + 3 | 41 | + 4 | 43 | + 5 | 58 | + 7 | |
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3/8 | 17 | + 2 | 18 | + 2 | 24 | + 3 | 35 | + 4 | 47 | + 5 | 50 | + 6 | 68 | + 8 | |
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7/16 | 27 | + 3 | 27 | + 3 | 37 | + 4 | 50 | + 5 | 68 | + 7 | 70 | + 7 | 95 | + 9 | |
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7/16 | 29 | + 3 | 29 | + 3 | 39 | + 4 | 55 | + 6 | 75 | + 8 | 77 | + 8 | 104 + 11 | ||
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1/2 | 30 | + 3 | 48 | + 7 | 65 | + 9 | 75 | + 8 | 102 + 11 | 105 + 11 | 142 | + 15 | |||
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1/2 | 32 | + 4 | 53 | + 7 | 72 | + 9 | 85 | + 9 | 115 + 12 | 120 | + 12 | 163 | + 16 | ||
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5/8 | 65 + 10 | 88 + 12 | 119 + 16 | 150 | + 15 | 203 | + 20 | 210 | + 21 | 285 | + 28 | ||||
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5/8 | 75 + 10 | 95 + 15 | 129 | + 20 | 170 | + 18 | 230 | + 24 | 240 | + 24 | 325 | + 33 | |||
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3/4 | 93 + 12 | 140 | + 20 | 190 | + 27 | 265 | + 27 | 359 | + 37 | 375 | + 38 | 508 | + 52 | ||
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3/4 | 115 + 15 | 165 | + 25 | 224 | + 34 | 300 | + 30 | 407 | + 41 | 420 | + 43 | 569 | + 58 | ||
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7/8 | 140 | + 20 | 225 | + 25 | 305 | + 34 | 430 | + 45 | 583 | + 61 | 600 | + 60 | 813 | + 81 | |
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7/8 | 155 | + 25 | 260 | + 30 | 353 | + 41 | 475 | + 48 | 644 | + 65 | 667 | + 66 | 904 | + 89 | |
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NOTE: Reduce torque values listed in the table above by 25% for lubricated fasteners. Lubricated fasteners are defined as threads coated with a lubricant such as engine oil or thread sealant such as Loctite.
NOTE: Torque values may have to be reduced when installing fasteners into threaded aluminum or brass. The specific torque value should be determined based on the fastener size, the aluminum or base material strength, length of thread engagement, etc.
NOTE: The nominal torque values listed above for Grade 5 and 8 fasteners are based on 75% of the mini- mum proof load specified in SAE J429. The tolerance is approximately + 10% of the nominal torque value. Thin height nuts include jam nuts.
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