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 Applications—Below 27 579 kPa (275.8 bar) (4000 psi) Working Pressure Applications—27 579 kPa (275.8 bar) (4000 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		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