Metric 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

Metric Face-Seal-Fitting Torque Chart High-Pressure Applications—Above 27 579 kPa (275.8 bar) (4000 psi) Working Pressure Applications—41 369 kPa (413.7 bar) (6000 psi)
Nominal Tube OD/Hose ID			Face Seal Tube/Hose End						O-Ring Stud Ends
Metric Tube OD	SAE Tube OD		Thread Size	Hex Size	Tube Nut/Swivel Nut Torque1		Bulkhead Lock Nut Torque1		Thread Size	Hex Size	Steel or Gray Iron Torque1
mm	Dash Size	(in)	(in)	mm	N·m	(lb·ft)	N·m	(lb·ft)	(in)	mm	N·m	(lb·ft)
6	-4	0.250	9/16-18	17	16	12	12	9	M12 x 1.5	17	35	26
8	-5	0.312	—	—	—	—	—	—	—	—	—	—
—	—	—	—	—	—	—	—	—	M14 x 1.5	19	45	33
10	-6	0.375	11/16-16	22	24	18	24	18	M16 x 1.5	22	55	40
12	-8	0.500	13/16-16	24	50	37	46	34	M18 x 1.5	24	70	50
16	-10	0.625	1-14	30	69	51	62	46	M22 x 1.5	27	100	75
20	-12	0.750	1-3/16-12	36	102	75	102	75	M27 x 2	32	170	125
22	-14	0.875	1-3/16-12	36	102	75	102	75	M30 x 2	36	215	160
25	-16	1.000	1-7/16-12	41	142	105	142	105	M33 x 2	41	310	225
28	—	—	—	—	—	—	—	—	M38 x 2	46	320	235
32	-20	1.25	1-11/16-12	—	—	—	—	—	M42 x 2	50	330	240
38	-24	1.50	2-12	—	—	—	—	—	M48 x 2	55	420	300