Table 2. Torque Limits for Wet 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 4 6 6 8 8 11 9 12 1/4 28 6.35 5 7 7 9 9 12 10 14 5/16 18 7.94 8 11 13 18 16 22 18 24 5/16 24 7.94 9 12 14 19 18 24 20 27 3/8 16 9.53 15 20 23 31 30 41 40 54 3/8 24 9.53 17 23 25 34 30 41 44 60 7/16 14 11.11 24 33 35 47 45 61 55 75 7/16 20 25 34 40 54 50 68 60 81 1/2 13 12.70 35 47 55 75 70 95 80 108 1/2 20 40 54 65 88 80 108 90 122 9/16 12 14.29 50 68 80 108 100 136 110 149 9/16 18 55 75 90 122 110 149 130 176 5/8 11 15.88 70 95 110 149 140 190 170 231 5/8 18 80 108 130 176 160 217 180 244 3/4 10 19.05 120 163 200 271 240 325 280 380 3/4 16 140 190 220 298 280 380 320 434 7/8 9 22.23 110 149 300 407 400 542 460 624 7/8 14 120 163 320 434 440 597 500 678 1 8 25.40 160 217 440 597 600 814 680 922 1 12 170 231 480 651 660 895 740 1003 1-1/8 7 25.58 220 298 600 814 840 1139 960 1302 1-1/8 12 260 353 660 895 940 1275 1080 1464 1-1/4 7 31.75 320 434 840 1139 1100 1492 1360 1844 1-1/4 12 360 488 920 1248 1320 1790 1500 2034 1-3/8 6 34.93 420 570 1100 1492 1560 2115 1780 2414 1-3/8 12 460 624 1260 1709 1780 2414 2040 2766 1-1/2 6 38.10 560 760 1460 1980 2080 2820 2360 3200 1-1/2 12 620 841 1640 2224 2320 3146 2660 3607 0385 00-3 TM 9-2320-386-24-1-2 0385 00 TORQUE LIMITS (Contd) CAPSCREW HEAD MARKINGS Manufacturer’s marks may vary. These are all SAE Grade 5 (3-line).