Nut Tightening Torques
Note – Tightening torques relate to counterpart made of steel with threads lightly oiled and should be used as a guide only.
| BSP Hydraulic Adaptor Connections | O.R.F.S Hydraulic Hose Connections | ||||||
| Nominal Size Of Nut | Nominal Size Of Nut | ||||||
BSP Size | Tightening Torque | SAE Dash | Thread | Equivalent BSP Size | Tightening Torque | ||
NM | Lbsf/ft | NM | Lbsf/ft | ||||
1/8 | 17 | 12 | -4 | 9/16-18 | 1/4 | 24 | 18 |
1/4 | 34 | 25 | -6 | 11/16-16 | 3/8 | 33 | 24 |
3/8 | 47 | 35 | -8 | 13/16-16 | 1/2 | 44 | 35 |
1/2 | 102 | 75 | -10 | 1-14 | 5/8 | 58 | 43 |
5/8 | 122 | 90 | -12 | 1-3/16-12 | 3/4 | 84 | 62 |
3/4 | 149 | 110 | -16 | 1-7/16-12 | 1 | 115 | 85 |
1 | 203 | 150 | -20 | 1-11/16-12 | 1-1/4 | 189 | 140 |
1-1/4 | 305 | 225 | -24 | 2-12 | 1-1/2 | 244 | 180 |
1-1/2 | 305 | 225 | |||||
2 | 400 | 296 | |||||
| METRIC | JIC & SAE Connections | ||||
| Nominal Size Of Nut | Nominal Size Of Nut | ||||
Tightening Torque | Tightening Torque | ||||
NM | Lbsf/ft | NM | Lbsf/ft | ||
M10 | 18 | 13 | 5/16-24 | 10 | 7 |
M12 | 20 | 15 | 3/8-24 | 10 | 7 |
M14 | 25 | 19 | 7/16-20 | 14 | 10 |
M16 | 45 | 33 | 1/2-20 | 20 | 15 |
M18 | 50 | 37 | 9/16-18 | 22 | 20 |
M20 | 70 | 52 | 5/8-18 | 27 | 20 |
M22 | 75 | 55 | 3/4-16 | 48 | 35 |
M26 | 110 | 81 | 7/8-14 | 81 | 60 |
M27 | 130 | 96 | 1-1/16-12 | 108 | 79 |
M33 | 220 | 162 | 1-3/16-12 | 136 | 100 |
M42 | 230 | 170 | 1-5/16-12 | 148 | 108 |
M48 | 350 | 258 | 1-5/8-12 | 173 | 127 |
1-7/8-12 | 216 | 158 | |||
2-1/2-12 | 334 | 245 | |||