TM 9-2320-361-34 Table E-1. Torque Limits for Dry Fasteners. CAPSCREW HEAD MARKINGS TORQUE SIZE SAE GRADE 5AE GRADE SAE GRADE SAE GRADE No. 1 or 2 No. 5 NO.6or7 NO. 8 DIA THREADS DIA. POUND NEWTON POUND NEWTON POUND NEWTON POUND NEWTON INCHES PER INCH MILLIMtlERS FEET METERS FEET METERS FEET METERS FEET METERS 1/4 20 6.35 5 6.78 8 10.85 10 13.56 12 16.27 1/4 28 6.35 6 8.14 10 13.56 - – 14 18.98 5/1 6 18 7.94 11 14.92 17 23.05 19 25.76 24 32.52 5/1 6 24 7.94 13 17.63 19 25.76 - - 27 36.61 3/8 16 9.53 18 24.41 31 42.04 34 46.10 44 59.66 3/8 24 9.53 20 27.12 35 47.46 - - 49 66.44 7/1 6 14 11.11 28 37.97 49 66.44 55 74.58 70 94.92 7/1 6 20 11.11 30 40.68 55 74.58 - - 78 105.77 1/2 13 12.70 39 52.88 75 101.70 85 115.26 105 142.38 1/2 20 12.70 41 55.60 85 115.26 - — 120 162.72 9/1 6 12 14.29 51 69.16 110 149.16 120 162.72 155 210.18 9/1 6 18 14.29 55 74.58 120 162.72 – - 170 230.52 5/8 11 15.88 63 85.43 150 203.40 167 226.45 210 284.76 5/8 18 15.88 95 128.82 170 230.52 - - 240 325.44 3/4 10 19.05 105 142.38 270 366.12 280 379.68 375 508.50 3/4 16 19.05 115 155.94 295 400.02 - - 420 569.52 7/8 9 22.23 160 216.96 395 535.62 440 596.64 605 820.38 7/8 14 22.23 175 237.30 435 589.86 - - 675 915.30 8 25.40 235 318.66 590 800.04 660 894.96 910 1233.96 14 25.40 250 339.00 660 894.96 - - 990 1342.44 1/8 - 25.58 - - 1084.8. - - 1280 1735.7 880 1193.3 1440 1952.6 1/4 - 31.75 - - - - - - 1820 2467.9 2712.0 1-3/8 - 34.93 - - 1460. 1979.8 - - 3227.3 1680 2278.1 3688.3 1/2 . - 38.10 - - 1940 3160 4285.0- 2200 3560 4827.4 1 1 2630.6 2983.2 E - 2