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Torques for British Standard Pipe Parallel (BSPP) straight-pipe-thread port connections
BSPP
Thread
S-Series
(Heavy Duty)
G 1/8 A
—
6 mm
G 1/4 A
8 mm
10 mm
G 3/8 A
12 mm
G 1/2 A
16 mm
G 3/4 A
20 mm
G 1 A
25 mm
G 1-1/4 A
30 mm
G 1-1/2 A
38 mm
NOTE: Final torque tolerance is +/– 10% of the given torque specification.
Metric Tube OD
L-Series
(Light Duty)
6 mm
8 mm
10 mm
12 mm
15 mm
18 mm
22 mm
28 mm
35 mm
42 mm
INTRODUCTION
Ferrous
S-Series
L-Series
(Heavy Duty)
(Light Duty)
21 N·m
—
(15.5 lb ft)
63 N·m
53 N·m
(46.5 lb ft)
(39.1 lb ft)
95 N·m
84 N·m
(70.1 lb ft)
(62.0 lb ft)
136 N·m
105 N·m
(100.3 lb ft)
(77.4 lb ft)
210 N·m
210 N·m
(154.9 lb ft)
(154.9 lb ft)
400 N·m
400 N·m
(295.0 lb ft)
(295.0 lb ft)
525 N·m
525 N·m
(387.2 lb ft)
(387.2 lb ft)
660 N·m
660 N·m
(486.8 lb ft)
(486.8 lb ft)
48048569 26/04/2017
15
Non-Ferrous
S-Series
L-Series
(Heavy Duty)
(Light Duty)
12.5 N·m
—
(9.2 lb ft)
38 N·m
32 N·m
(28.0 lb ft)
(23.6 lb ft)
57 N·m
50 N·m
(42.0 lb ft)
(36.9 lb ft)
82 N·m
63 N·m
(60.5 lb ft)
(46.5 lb ft)
126 N·m
126 N·m
(92.9 lb ft)
(92.9 lb ft)
240 N·m
240 N·m
(177.0 lb ft)
(177.0 lb ft)
315 N·m
315 N·m
(232.3 lb ft)
(232.3 lb ft)
396 N·m
396 N·m
(292.1 lb ft)
(292.1 lb ft)
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