TM 5-5420-278-24&P 0075 00 0075 00-2 Table 1.  Torque Limits for Dry Fasteners. TORQUE SIZE SAE GRADE SAE GRADE SAE GRADE SAE GRADE NO. 1 or 2 NO. 5 NO. 6 or 7 NO. 8 DIA. THREADS DIA. POUND NEWTON POUND NEWTON POUND NEWTON POUND NEWTON INCHES PER INCH MILLIMETERS FEET METERS FEET METERS FEET METERS FEET METERS 1/4 20 6.35 5 7 8 11 10 14 12 16 1/4 28 6.35 6 9 10 14 12 16 14 19 5/16 18 7.94 11 15 17 23 21 28 24 33 5/16 24 7.94 12 16 19 26 24 33 27 37 3/8 16 9.53 20 27 30 41 40 54 45 61 3/8 24 9.53 23 31 35 47 45 61 50 68 7/16 14 11.11 30 41 50 68 60 81 70 95 7/16 20 35 47 55 75 70 95 80 108 1/2 13 12.70 50 68 75 102 95 129 110 149 1/2 20 55 75 90 122 100 136 120 163 9/16 12 14.29 65 88 110 149 135 183 150 203 9/16 18 75 102 120 163 150 203 170 231 5/8 11 15.88 90 122 150 203 190 258 220 298 5/8 18 100 136 180 244 210 285 240 325 3/4 10 19.05 160 217 260 353 320 434 380 515 3/4 16 180 244 300 407 360 488 420 597 7/8 9 22.23 140 190 400 542 520 705 600 814 7/8 14 155 210 440 597 580 786 660 895 1 8 25.40 220 298 580 786 800 1085 900 1220 1 12 240 325 640 868 860 1166 1000 1356 1-1/8 7 25.58 300 407 800 1085 1120 1519 1280 1736 1-1/8 12 340 461 880 1193 1260 1709 1440 1953 1-1/4 7 31.75 420 570 1120 1519 1580 2142 1820 2468 1-1/4 12 460 624 1240 1681 1760 2387 2000 2712 1-3/8 6 34.93 560 759 1460 1980 2080 2820 2380 3227 1-3/8 12 640 868 1690 2278 2380 3227 2720 3688 1-1/2 6 38.10 740 1003 1940 2631 2780 3770 3160 4285 1-1/2 12 840 1139 2200 2983 3100 4204 3560 4827 CAPSCREW HEAD MARKINGS Manufacturer’s marks may vary. These are all SAE Grade 5 (3-line). TORQUE LIMITS (Contd)