INTRODUCTION
Torques for Inch O-Ring Boss (ORB) non-adjustable port and stud end connections
Ferrous
Non-Ferrous
SAE
Dash size
UN/UNF
Thread size
Inch Tube OD
S-Series
(Heavy Duty)
L-Series
(Light Duty)
S-Series
(Heavy Duty)
L-Series
(Light Duty)
2
5/16–24
3.18 mm
(
0.125 in
) 1/8
—
—
8.5 N·m
(
6.3 lb
ft
)
5 N·m
(
3.7 lb
ft
)
3
3/8–24
4.76 mm
(
0.187 in
) 3/16
15.5 N·m
(
11.4 lb ft
)
9.3 N·m
(
6.9 lb
ft
)
10.5 N·m
(
7.7 lb ft
)
6.3 N·m
(
4.6 lb
ft
)
4
7/16–20
6.35 mm
(
0.25 in
) 1/4
37 N·m
(
27.3 lb ft
)
22 N·m
(
16.2 lb ft
)
19 N·m
(
14.0 lb ft
)
11.5 N·m
(
8.5 lb ft
)
5
1/2–20
7.94 mm
(
0.313 in
) 5/16
42 N·m
(
31.0 lb ft
)
25 N·m
(
18.4 lb ft
)
26 N·m
(
19.2 lb ft
)
15.5 N·m
(
11.4 lb ft
)
6
9/16–18
9.52 mm
(
0.375 in
) 3/8
47 N·m
(
34.7 lb ft
)
28 N·m
(
20.7 lb ft
)
32 N·m
(
23.6 lb ft
)
19 N·m
(
14.0 lb ft
)
8
3/4–16
12.7 mm
(
0.5 in
) 1/2
89 N·m
(
65.6 lb ft
)
53 N·m
(
39.1 lb ft
)
53 N·m
(
39.1 lb ft
)
32 N·m
(
23.6 lb ft
)
10
7/8–14
15.88 mm
(
0.625 in
) 5/8
121 N·m
(
89.2 lb ft
)
73 N·m
(
53.8 lb ft
)
63 N·m
(
46.5 lb ft
)
38 N·m
(
28.0 lb ft
)
12
1-1/16–12
19.05 mm
(
0.75 in
) 3/4
178 N·m
(
131.3 lb ft
)
107 N·m
(
78.9 lb ft
)
100 N·m
(
73.8 lb ft
)
60 N·m
(
44.3 lb ft
)
14
1-3/16–12
22.22 mm
(
0.875 in
) 7/8
225 N·m
(
166.0 lb ft
)
135 N·m
(
99.6 lb ft
)
131 N·m
(
96.6 lb ft
)
79 N·m
(
58.3 lb ft
)
16
1-5/16–12
25.4 mm
(
1.0 in
) 1
283 N·m
(
208.7 lb ft
)
170 N·m
(
125.4 lb ft
)
156 N·m
(
115.1 lb ft
)
94 N·m
(
69.3 lb ft
)
20
1-5/8–12
31.75 mm
(
1.25 in
) 1-1/4
300 N·m
(
221.3 lb ft
)
180 N·m
(
132.8 lb ft
)
210 N·m
(
154.9 lb ft
)
126 N·m
(
92.9 lb ft
)
24
1-7/8–12
38.1 mm
(
1.5 in
) 1-1/2
388 N·m
(
286.2 lb ft
)
233 N·m
(
171.9 lb ft
)
220 N·m
(
162.3 lb ft
)
132 N·m
(
97.4 lb ft
)
32
2-1/2–12
50.8 mm
(
2.0 in
) 2
388 N·m
(
286.2 lb ft
)
233 N·m
(
171.9 lb ft
)
315 N·m
(
232.3 lb ft
)
189 N·m
(
139.4 lb ft
)
NOTE:
Final torque tol/–
10%
of the given torque specification.
48194558 20/10/2017
50