NUT TIGHTENING TORQUES
LIGHTLY OILED THREADS

BSP Hydraulic Adaptor Connections


Nominal Size of Nut

BSP Size	Tightening Torque

	Nm	Lbsf/ft

1/8	17	12

1/4	34	25

3/8	47	35

1/2	102	75

5/8	122	90

3/4	149	110

1	203	150

1-1/4	305	225

1-1/2	305	225

2	400	296

O.R.F.S Hydraulic Hose Connections


Nominal Size of Nut

SAE Dash	Thread	Equivalent BSP Size	Tightening Torque

			Nm	Lbsf/ft

-4	9/16-18	1/4	24	18

-6	11/16-16	3/8	33	24

-8	13/16-16	1/2	44	35

-10	1-14	5/8	58	43

-12	1-3/16-12	3/4	84	62

-16	1-7/16-12	1	115	85

-20	1-11/16-12	1-1/4	189	140

-24	2-12	1-1/2	244	180

Metric


Nominal Size of Nut		Tightening Torque

		Nm	Lbsf/ft

	M10	18	13

	M12	20	15

	M14	25	19

	M16	45	33

	M18	50	37

	M20	70	52

	M22	75	55

	M26	110	81

	M27	130	96

	M33	220	162

	M42	230	170

	M48	350	258

JIC & SAE Connections


Nominal Size of Nut		Tightening Torque

		Nm	Lbsf/ft

	5/16-24	10	7

	3/8-24	10	7

	7/16-20	14	10

	1/2-20	20	15

	9/16-18	22	20

	5/8-18	27	20

	3/4-16	48	35

	7/8-14	81	60

	1-1/16-12	108	79

	1-3/16-12	136	100

	1-5/16-12	148	108

	1-5/8-12	173	127

	1-7/8-12	216	158

	2-1/2-12	334	245

Note
1. Tightening torques relate to counterpart made of steel.

2. As a general rule, for steel adaptor with aluminium counterpart you can use torque figures 50% of those shown in the table.
However, the coeficient of friction between the materials makes torque wrenches unreliable by a factor of 35%.

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NUT TIGHTENING TORQUES LIGHTLY OILED THREADS

NUT TIGHTENING TORQUES
LIGHTLY OILED THREADS