SAE UNF O-ring boss port adaptors; straight and phased (heavy duty S series)
SAE thread (UN/UNF-2A) | Adapter Torque into aluminium body (Nm) | Adapter Torque into ferrous body (Nm) | Plug Torque into ferrous body (Nm) |
3/8” - 24 | 10 - 12 | 10 - 12 | 20 - 22 |
7/16" - 20 | 20 - 22 | 20 - 22 | 35 - 39 |
½” - 20 non-preferred |
25 - 27.5 |
25 - 27.5 |
40 - 44 |
9/16" - 18 | 31 - 37 | 35 - 39 | 45 - 50 |
3/4" - 16 | 45 - 50 | 70 - 77 | 85 - 93 |
7/8" - 14 | 65 - 71 | 100 - 110 | 110 - 120 |
1-1/16" - 12 | 95 - 108 | 170 - 187 | 170 - 187 |
1-3/16" - 12 | 127 - 140 | 215 - 236 | 215 - 236 |
1-5/16" - 12 | 158 - 169 | 270 - 297 | 270 - 297 |
1-5/8" - 12 | 197 - 210 | 285 - 310 | * |
1-7/8" - 12 | 220 - 235 | 370 - 400 | * |
