TM 9-2320-361-20 Table D-2. Torque Limits for Wet Fasteners. CAPSCREW HEAD MARKINGS TORQUE SIZE SAE GRADE SAE GRADE SAE GRADE SAE GRADE NO. 1 or 2 NO. 5 NO. 6 or 7 NO. 8 DIA. THREADS MILLIMETERS POUND NEWTON POUND NEWTON POUND NEWTON POUND NEWTON INCHES PER INCH FEET METERS FEET METERS FEET METERS FEET METERS 1/4 20 6.35 4.9 6.6 7.2 9.76 9.0 12.20 10.8 14.64 1/4 28 6.35 5.4 7.32 9.0 12.20 - - 12.6 17.09 5/16 18 7.94 9.9 13.42 15.3 20.75 17.1 23.19 21.6 29.29 5/16 24 7.94 11.7 15.87 17.1 23.19 - - 24.3 32.95 3/8 16 9.53 16.2 21.97 27.9 37.83 30.6 41.49 39.6 53.70 3/8 24 9.53 18.0 24.41 31.5 42.71 - - 44.1 59.80 7/16 14 11.11 25.2 34.17 44.1 59.80 49.5 67.12 63.0 85.43 7/16 20 - 27.0 36.61 49.5 67.12 - - 70.2 95.19 1/2 13 12.70 35.1 47.60 67.5 91.53 76.5 103.73 94.5 128.14 1/2 20 - 36.9 50.04 76.5 103.73 - - 108.0 146.45 9/16 12 14.29 45.9 62.24 99.0 134.24 108.0 146.45 139.5 189.16 9/16 18 - 49.5 67.12 108.0 146.45 - - 153.0 207.47 5/8 11 15.88 56.7 76.89 135.0 183.06 150.3 203.81 189.0 256.28 5/8 18 - 85.5 115.94 153.0 207.47 - - 216.0 292.90 3/4 10 19.05 94.5 128.14 243.0 329.51 252.0 341.71 337.5 457.65 3/4 16 - 103.5 140.35 265.5 360.02 - - 378.0 512.57 7/8 9 22.23 144.0 195.26 355.5 482.06 396.0 536.98 544.5 738.34 7/8 14 - 157.5 213.57 391.5 530.87 - - 607.5 823.77 1 8 25.40 211.5 286.79 531.0 720.04 594.0 805.46 819.0 1110.56 1 14 - 225.0 305.10 594.0 805.46 - - 891.0 1208.20 1-1/8 - 28.58 - - 720.0- 976.32- - - 1152.0- 1562.11- 792.0 1073.95 1296.0 1757.38 1-1/4 - 31.75 - - - - - - 1638.0- 2221.13 1800.0 2440.80 1-3/8 - 34.93 - - 1314.0- 1781.78- - - 2142.0- 2904.55- 1512.0 2050.27 2448.0 3319.49 1-1/2 - 38.10 - - 1746.0- 2367.58- - - 2844.0- 3856.5- 1980.0 2684.88 3204.0 4344.62 D-3