TM 9-2815-250-24&P E-3.  HOW TO USE TORQUE TABLE (continued). 5. To  find  the  grade  of  the  screw  that  is  to  be  installed,  match  the  markings  on  the  head  to  the  correct  picture  of CAPSCREW HEAD MARKINGS on the table. CAPSCREW HEAD MARKINGS Manufacturer's marks may vary. These are all SAE Grade No. 5 (3 lines). 6.    Look  down  the  column  under  the  picture  found  in  step  5  until  the  torque  limit  in  foot-pounds  for  the  diameter  and threads per inch of the screw being Installed is found. Table E-1.  Torque Limits for Dry Fasteners SAE CAPSCREW HEAD MARKINGS SIZE TORQUE SAE GRADE SAE GRADE SAE GRADE SAE GRADE No.  1 or 2 No.  5 No.  6 or 7 No.  8 DIA. THREADS FOOT FOOT- FOOT- FOOT- (IN.) PER INCH MM POUNDS Nm POUNDS Nm POUNDS Nm POUNDS Nm 1/4 20 6.35 5 6.78 8.0 10.85 10 13.56 12.0 16.27 1/4 28 6.35 6 8.14 10.0 13.56 14.0 18.98 5/16 18 7.94 11 14.92 17.0 23.05 19 25.76 24.0 32.52 5/16 24 7.94 13 17.63 19.0 25.76 27.0 36 61 3/8 16 9.53 18 24.41 31.0 42.04 34 46.10 44.0 59.66 3/8 24 9.53 20 27.12 35.0 47.46 49.0 66.44 7/16 14 11.11 28 37.97 49.0 66.44 55 74.58 70.0 94.92 7/16 20 30 40.68 55.0 74.58 78.0 105.77 1/2 13 12.70 39 52.88 75.0 101.70 85 115.26 105.0 142.38 1/2 20 41 55.60 85.0 115.26 120.0 162.78 9/16 12 14.28 51 69.16 110.0 149.16 120 162.72 155.0 210.18 9/16 18 55 74.58 120.0 162.72 170.0 230.52 5/8 11 15.88 63 85.43 150.0 203.40 167 226.45 210.0 284.76 5/8 18 95 128.82 170.0 230.52 240.0 325.44 3/4 10 19.05 105 142.38 270.0 356.12 280 379.68 375.0 506.50 3/4 16 115 155.94 295.0 400.02 420.0 596.52 7/8 9 22.23 160 216.96 375.0 536.62 440 596.64 605.0 820.38 7/8 14 175 237.30 435.0 599.85 675.0 915.30 1 8 25.40 235 318.66 590.0 800.04 660 694.96 910.0 1233.96 1 14 250 338.00 660.0 894.96 990.0 1342.44 1 1/8 25.58 800.0 1064.80 1280.0 1735.70 880.0 1193.30 1444.0 1952.80 1 1/4 31.75 1820.0 2467.90 2000.0 2712.00 1 3/8 34.93 1460.0 1979.80 2300.0 3227.30 1680.0 2278.10 2720.0 3688.30 1 1/2 38.10 1940.0 2630.60 3160.0 4285.00 2200.0 2963.20 3560.0 4827.40 E-2