SAE Face Seal and O-Ring Stud End Fitting Torque Chart—Standard Pressures
N79757-UN-13FEB08
A - Stud Straight and Tube Nut
B - Bulkhead Union and Bulkhead Lock Nut
C - 90° Swivel Elbow and Tube Nut
D - 90° Adjustable Stud Elbow
E - Port Plug
F - Stud End
G - Tube Nut
H - Swivel Nut
I - Lock Nut
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SAE Face Seal and O-Ring Stud End Fitting Torque Chart—Standard Pressure-Below 27.6 MPA (4,000 PSI) |
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Nominal Tube OD Hose ID |
O-Ring Face Seal/ Tube Swivel Nut |
Bulkhead Jam Nut TorqueA |
O-Ring Straight, Adjustable, and External Port Plug Stud EndsA |
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Metric Tube OD |
Inch Tube OD |
Thread Size |
Swivel Nut Hex Size |
Tube Nut/Swivel Nut Torque |
Jam Nut Hex Size |
Jam Nut Torque |
Thread Size |
Straight Hex SizeB |
Adj Lock Nut Hex Size |
Steel or Gray Iron Torque |
Aluminum or Brass TorqueC |
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mm |
Dash Size |
in. |
mm |
in. |
in. |
N˙m |
lb-ft |
N˙m |
lb-ft |
in. |
in. |
in. |
N·m |
lb-ft |
N˙m |
lb-ft |
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|
5 |
-3 |
0.188 |
4.78 |
— |
— |
— |
— |
— |
— |
— |
3/8-24 |
5/8 |
9/16 |
12 |
9 |
8 |
6 |
|
6 |
-4 |
0.250 |
6.35 |
9/16-18 |
11/16 |
24 |
18 |
13/16 |
32 |
24 |
7/16-20 |
5/8 |
5/8 |
16 |
12 |
11 |
8 |
|
8 |
-5 |
0.312 |
7.92 |
— |
— |
— |
— |
— |
— |
— |
1/2-20 |
3/4 |
11/16 |
24 |
18 |
16 |
12 |
|
10 |
-6 |
0.375 |
9.53 |
11/16-16 |
13/16 |
37 |
27 |
1 |
42 |
31 |
9/16-18 |
3/4 |
3/4 |
37 |
27 |
25 |
18 |
|
12 |
-8 |
0.500 |
12.70 |
13/16-16 |
15/16 |
50 |
37 |
1-1/8 |
93 |
69 |
3/4-16 |
7/8 |
15/16 |
50 |
37 |
33 |
25 |
|
16 |
-10 |
0.625 |
15.88 |
1-14 |
1-1/8 |
69 |
51 |
1-5/16 |
118 |
87 |
7/8-14 |
1-1/16 |
1-1/16 |
69 |
51 |
46 |
34 |
|
20 |
-12 |
0.750 |
19.05 |
1-3/16-12 |
1-3/8 |
102 |
75 |
1-1/2 |
175 |
129 |
1-1/16-12 |
1-1/4 |
1-3/8 |
102 |
75 |
68 |
50 |
|
22 |
-14 |
0.875 |
22.23 |
1-3/16-12 |
— |
102 |
75 |
— |
175 |
129 |
1-3/16-12 |
1-3/8 |
1-1/2 |
122 |
90 |
81 |
60 |
|
25 |
-16 |
1.000 |
25.40 |
1-7/16-12 |
1-5/8 |
142 |
105 |
1-3/4 |
247 |
182 |
1-5/16-12 |
1-1/2 |
1-5/8 |
142 |
105 |
95 |
70 |
|
32 |
-20 |
1.25 |
31.75 |
1-11/16-12 |
1-7/8 |
190 |
140 |
2 |
328 |
242 |
1-5/8-12 |
1-3/4 |
1-7/8 |
190 |
140 |
127 |
93 |
|
38 |
-24 |
1.50 |
38.10 |
2-12 |
2-1/4 |
217 |
160 |
2-3/8 |
374 |
276 |
1-7/8-12 |
2-1/8 |
2-1/8 |
217 |
160 |
145 |
107 |
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50.8 |
-32 |
2.000 |
50.80 |
— |
— |
— |
— |
— |
— |
— |
2-1/2-12 |
2-3/4 |
2-3/4 |
311 |
229 |
207 |
153 |
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A Tolerance is +15%, minus 20% of mean tightening torque unless otherwise specified. |
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B The straight hex wrench sizes listed apply to connectors only and may not be the same as the corresponding plug of the same thread size. |
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C These torques were established using steel plated connectors in aluminum and brass. |
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OUO1073,0002304-19-20080225 |