Metric Face Seal Fitting Torque Chart—Standard 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—Standard Pressure—Below 27.6 MPA (4,000 PSI), Working Pressure-27.6 MPA (4,000 PSI)
Nominal Tube OD/Hose ID			Face Seal Tube/Hose End						O-Ring Stud Ends
Metric Tube OD	Inch Tube OD		Thread Size	Hex Size	Tube Nut/Swivel Nut Torque1		Bulkhead Lock Nut Torque1		Thread Size	Hex Size	Steel or Gray Iron Torque1		Aluminum Torque1
mm	Dash Size	in.	in.	mm	N˙m	lb-ft	N˙m	lb-ft	in.	mm	N˙m	lb-ft	N˙m	lb-ft
6	-4	0.250	9/16-18	17	16	12	12	9	M12 x 1.5	17	21	15.5	9	6.6
8	-5	0.312	—	—	—	—	—	—	—	—	—	—	—	—
—	—	—	—	—	—	—	—	—	M14 x 1.5	19	33	24	15	11
10	-6	0.375	11/16-16	22	24	18	24	18	M16 x 1.5	22	41	30	18	13
12	-8	0.500	13/16-16	24	50	37	46	34	M18 x 1.5	24	50	37	21	15
16	-10	0.625	1-14	30	69	51	62	46	M22 x 1.5	27	69	51	28	21
20	-12	0.750	1-3/16-12	36	102	75	102	75	M27 x 2	32	102	75	46	34
22	-14	0.875	1-3/16-12	36	102	75	102	75	M30 x 2	36	Not Established
25	-16	1.000	1-7/16-12	41	142	105	142	105	M33 x 2	41	158	116	71	52
28	—	—	—	—	—	—	—	—	M38 x 2	46	176	130	79	58
32	-20	1.25	1-11/16-12	50	190	140	190	140	M42 x 2	50	190	140	85	63
38	-24	1.50	2-12	60	217	160	217	160	M48 x 2	55	217	160	98	72