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Page Title: Table 1. General Torque Requirements for Dry Fasteners
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TM 10-5430-242-12&P 0043 00 0043 00-1 OPERATOR AND UNIT MAINTENANCE COLLAPSIBLE FABRIC TANK, FUEL STORAGE, 3,000   10,000, 20,000, AND 50,000 GALLON TORQUE LIMITS INTRODUCTION This work package provides general torque limits for fasteners.  Special torque values are indicated in the maintenance procedures for applicable components.  The general torque values given in this work package shall be used when specific torque values are not indicated in the maintenance procedures. Torque Limits Torque limits are listed in Table 1 for fasteners.  Dry fasteners are defined as fasteners on which no lubricants are applied to the threads.  Wet fasteners are defined as fasteners on which graphite or moly- disulphide greases or other extreme pressure lubricants are applied to the threads.  Table 2 lists the minimum breakaway torque values for locknuts. Table 1.  General Torque Requirements for Dry Fasteners*. Torque Requirement in lb ft (N·m) Bolt/Screw SAE Grade SAE Grade SAE Grade        SAE Grade    Size       1 or 2       5     6 or 7    8 1/4-20 UNC     5 (7)      8 (11)        10 (14) 12 (16) 1/4-28 UNF     7 (8)     10 (14)    12 (16) 14 (19) 5/16-18 UNC   11 (15)   17 (23)    19 (26) 24 (33) 5/16-24 UNF   13 (18)   19 (26)    23 (31) 27 (37) 3/8-16 UNC   18 (24)    31 (42)    34 (46) 44 (60) 3/8-24 UNF   20 (27)   35 (47)    42 (57) 49 (66) 7/16-14 UNC   28 (38)   49 (66)    55 (75) 70 (95) 7/16-20 UNF   30 (41)   55 (75)    67 (91)            78 (106) 1/2-13 UNC   39 (53)   75 (102)    85 (115)          105 (142) 1/2-20 UNF   41 (56)   85 (115) 102 (138)          120 (163) 9/16-12 UNC   51 (69) 110 (149) 120 (163)          155 (210) 9/16-18 UNF   55 (75) 120 (163) 145 (197)          170 (231) 5/8-11 UNC   63 (85) 150 (203) 167 (226)          210 (285) 5/8-18 UNF   95 (129) 170 (231) 205 (278)          240 (325) 3/4-10 UNC 105 (142) 270 (366) 280 (380)          375 (509) 3/4-16 UNF 115 (156) 295 (400) 357 (484)          420 (570) 7/8-9 UNC 160 (217) 395 (536) 440 (597)          605 (820) 7/8-14 UNF 175 (237) 435 (590) 555 (753)          675 (915) 1-8 UNC 235 (319) 590 (800) 660 (895)        910 (1234) 1-14 UNF 250 (339) 660 (865) 825 (1119)        999 (1342) 1-1/8-7 UNC 350 (475) 800 (1085)             1000 (1356)      1280 (1736) 1-1/8-12 UNF 400 (542) 880 (1193)             1050 (1424)      1440 (1953) 1-1/4-7 UNC 500 (678)            1080 (1464)             1325 (1797)      1820 (2468) 1-1/4-12 UNF 550 (746)            1125 (1526)             1325 (1797)      1820 (2712) 1-3/8-6 UNC 660 (895)            1460 (1980)             1800 (2441)      2380 (3227) 1-3/8-12 UNF 740 (1003)            1680 (2278)             1960 (2658)      2720 (3688) 1-1/2-6 UNC 870 (1180)            1940 (2631)             2913 (3950)      3160 (4285) 1-1/2-12 UNF 980 (1329)            2200 (2983)             3000 (4068)      3560 (4827) *Torque given is for clean, dry threads.  Reduce by 10% when engine oil is used as lubricant.

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