SAE BOSS Torque Specifications

 

Adjustable Straight Thread

These Fittings include Elbows or Tees, which can be oriented toward a mating member, such as tubing, before tightening.

Unlike non-adjustable O-ring Boss connectors, the adjustable O-ring Boss connector utilizes a back-up washer which forces the O-ring into the cavity as the lock nut in tightened.

Thread Size Assembly Torque
(in-lb)
Assembly Torque
(ft-lb)
2 85 – 95 7 – 8
3 160 – 180 13 – 15
4 205 – 235 17 – 19
5 245 – 275 21 – 23
6 300 – 340 25 – 29
8 545 – 595 46 – 50
10 1010 – 1100 85 – 95
12 1250 – 1350 105 – 115
14 1675 – 1825 139 – 151
16 1895 – 1945 154 – 166
20 2550 – 2850 213 – 237
24 2850 – 3150 238 – 262
32 3700 – 4100 310 – 340

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