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Table 507. Examples - 77,500 psi Thread Root Stress
NOMINAL TORQUES FOR NUTS, BOLTS, SCREWS, AND FOR NUTS AND BOLTS INSTALLED ON KEY- OR RING- LOCKED STUDS OR INSERTS IN ALUMINUM OR STEEL 77,500 psi thread root stress
SIZE LOAD (LBS) LOAD (N) NUT TORQUE BOLT TORQUE
(IN-LBS) (N-m) (IN-LBS) (N-m)
2 -56 --- --- --- --- --- ---
4 -40 --- --- --- --- --- ---
6 -32 --- --- --- --- --- ---
8 -32 960 4270.272 30 3.3895440 37 4.1804376
1--32 1400 6227.480 50 5.6492400 60 6.7790880
1/4 -28 2590 11520.838 125 14.1231000 145 16.3827960
5/16 - 24 4160 18504.512 245 27.6812760 275 31.0708200
3/8 -24 6385 28401.757 455 51.4080840 500 56.4924000
7/16 - 20 8615 38321.243 715 80.7841320 775 87.5632200
1/2 -20 11715 52110.663 1115 125.9780520 1190 134.4519120
Table 508. Examples - 62,000 psi Thread Root Stress
NOMINAL TORQUES FOR NUTS, BOLTS, SCREWS, AND FOR NUTS AND BOLTS INSTALLED ON KEY- OR RING- LOCKED STUDS OR INSERTS IN ALUMINUM OR STEEL 62,000 psi Thread Root Stress
SIZE LOAD (LBS) LOAD (N) NUT TORQUE BOLT TORQUE
(IN-LBS) (N-m) (IN-LBS) (N-m)
2 -56 --- --- --- --- --- ---
4 -40 --- --- --- --- --- ---
6 -32 --- --- --- --- --- ---
8 -32 770 3425.114 24 2.7116352 30 3.3895440
1--32 1125 5004.225 40 4.5193920 50 5.6492400
1/4 -28 2135 9496.907 100 11.2984800 120 13.5581760
5/16 - 24 3330 14812.506 200 22.5969600 225 25.4215800
3/8 -24 5110 22730.302 365 41.2394520 405 45.7588440
7/16 - 20 6895 30670.339 575 64.9662600 630 71.1804240
1/2 -20 9376 41706.323 890 100.5564720 970 109.5952560
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Assembly
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Table 509. Examples - 41,875 psi Thread Root Stress
NOMINAL TORQUES FOR NUTS, BOLTS, SCREWS, AND FOR NUTS AND BOLTS INSTALLED ON KEY- OR RING- LOCKED STUDS OR INSERTS IN ALUMINUM OR STEEL 41,875 psi Thread Root Stress
SIZE LOAD (LBS) LOAD (N) NUT TORQUE BOLT TORQUE
(IN-LBS) (N-m) (IN-LBS) (N-m)
2 -56 142 631.644 2.5 0.2824620 4 0.4519392
4 -40 210 934.122 5.0 0.5649240 7 0.7908936
6 -32 325 1445.665 9.0 1.0168632 12 1.3558176
8 -32 520 2313.064 16.0 1.8077568 22 2.4856656
1--32 760 3380.632 27.0 3.0505896 35 3.9544680
1/4 -28 1400 6227.480 66.0 7.4569968 80 9.0387840
5/16 - 24 --- --- --- --- --- ---
3/8 -24 --- --- --- --- --- ---
7/16 - 20 --- --- --- --- --- ---
1/2 -20 --- --- --- --- --- ---
Assembly
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D. Procedure - Preparing and Installing Fluid and Gasketed Fittings, and Special Metal and Conical Seals for Tubing and Hose Fittings. 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：标准施工手册 STANDARD PRACTICES MANUAL 20-00-02/70-00-01(111)
