SAFETY, OPERATORS & MAINTENANCE MANUALen-8214 TORQUES14.1 TORQUESFINE PITCH METRIC THREADSDia(mm)Grade4.6Grade4.8Grade8.8Grade10.9Grade12.9(Nm) (Nm) (Nm) (Nm) (Nm)6 0 0 0 0 08 12 16 32 45 5410 24 31 63 88 10612 42 57 113 159 19114 67 90 179 252 30216 103 137 274 385 46220 209 279 557 783 94022 281 375 750 1055 126624 354 472 944 1327 159327 514 686 1371 1928 231430 715 954 1908 2683 321933 964 1286 2572 3616 434036 1196 1594 3189 4484 5381UNF THREADSDia (in) GradeAGradeSGradeTGradeVGradeX(lbf. ft) (lbf. ft) (lbf. ft) (lbf. ft) (lbf. ft)1/4 3.8 10.4 11.3 14.3 17.35/16 7.7 20.8 22.5 28.5 34.53/8 13.9 37.7 40.7 51.6 62.57/16 21.9 59.5 64.2 81.4 98.61/2 33.7 91.5 98.7 125 1529/16 48.2 131 141 179 2175/8 67.4 183 197 250 3033/4 118 319 344 437 5297/8 188 509 550 697 6451 279 757 817 1036 12551 1/8 405 1099 1186 1504 18231 1/4 563 1529 1650 2093 25351 3/8 759 2061 2224 2821 3418UNC THREADSDia (in) GradeAGradeSGradeTGradeVGradeX(lbf. ft) (lbf. ft) (lbf. ft) (lbf. ft) (lbf. ft)1/4 3.4 9.2 9.9 12.6 15.25/16 7 18.9 20.4 25.8 31.33/8 12.3 33.5 36.1 45.8 55.57/16 19.7 53.5 57.8 73.2 88.71/2 30.1 81.6 88 112 1359/16 43.3 117 127 161 1955/8 59.8 162 175 222 2693/4 106 288 310 394 4777/8 171 464 500 635 7691 256 695 749 950 11521 1/8 363 984 1062 1347 16321 1/4 511 1387 1497 1899 23001 3/8 670 1820 1963 2490 3017COARSE PITCH METRIC THREADSDia(mm)Grade4.6Grade4.8Grade8.8Grade10.9Grade12.9(Nm) (Nm) (Nm) (Nm) (Nm)6 5 6 12 17 218 11 15 30 42 5110 22 30 59 84 10012 39 52 104 146 17514 62 82 165 232 27816 96 129 257 362 43420 188 251 502 706 84722 256 341 683 960 115224 325 434 868 1220 146427 476 635 1269 1785 214230 646 862 1723 2424 290833 822 1097 2193 3084 370136 1129 1506 3012 4235 5082