SAE Face Seal and O-Ring Stud End Fitting Torque Chart-Standard Pressures

N79757


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

SAE Face Seal and O-Ring Stud End Fitting Torque Chart-Standard Pressure-Below 27.6 MPA (4,000 PSI)
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
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
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
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 16 12 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 24 18 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
50.8 -32 2.000 50.80 - - - - - - - 2-1/2-12 2-3/4 2-3/4 311 229 207 153
A Tolerance is +15%, minus 20% of mean tightening torque unless otherwise specified.
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.
C These torques were established using steel plated connectors in aluminum and brass.

 

OUO1073,00022DE -19-13FEB08-1/1