SAE Face Seal Fitting Torque Chart—High Pressure Applications

H70406-UN-15APR13

A - 90° Swivel Elbow and Tube Nut

B - 90° Adjustable Stud Elbow

C - Stud Straight and Tube Nut

D - Bulkhead Union and Bulkhead Lock Nut

E - Stud End

F - Tube Nut

G - Swivel Nut

H - Lock Nut

SAE Inch Face Seal Fitting Torque Chart—High Pressure—Above 27.6 MPA (4,000 PSI), Working Pressure-41.3 MPA (6,000 PSI)
Nominal Tube OD/Hose ID				Face Seal Tube/Hose End					O-Ring Stud Ends
Metric Tube OD	Inch Tube OD			Thread Size	Tube Nut/Swivel Nut Torque1		Bulkhead Lock Nut Torque1		Thread Size	Straight Fitting or Lock Nut Torque1
mm	Dash Size	in.	mm	in.	N˙m	lb-ft	N˙m	lb-ft	in.	N˙m	lb-ft
5	-3	0.188	3.76	—	—	—	—	—	3/8-24	—	—
6	-4	0.250	6.35	9/16-18	16	12	12	9	7/16-20	21	15
8	-5	0.312	7.94	—	—	—	—	—	1/2-20	—	—
10	-6	0.375	9.52	11/16-16	24	18	24	18	9/16-18	34	25
12	-8	0.500	12.70	13/16-16	50	37	46	34	3/4-16	73	55
16	-10	0.625	15.88	1-14	69	51	62	46	7/8-14	104	76
20	-12	0.750	19.05	1-3/16-12	102	75	102	75	1-1/16-12	176	130
22	-14	0.875	22.22	1-3/16-12	102	75	102	75	1-3/16-12	230	170
25	-16	1.000	25.40	1-7/16-12	142	105	142	105	1-5/16-12	285	210