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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 ConnectionsO.R.F.S Hydraulic Hose Connections
Nominal Size Of Nut

Nominal Size Of Nut

BSP Size

Tightening Torque

SAE DashThreadEquivalent 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

 

METRICJIC & 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