10-24, 10-32, 10.8 14.9 132, 12.2 108 16.3 144 16-18

Appendix C General Torque Specifications

Use the following torque specifications when service literature instructions give no specific torque values. The charts list values for new plated, zinc phosphate, or

oiled threads. Increase values by 15% for nonplated threads. All torque values are +0%/--10%.

American Standard Fasteners Torque Specifications

			Assembled into Cast Iron or Steel					Assembled into
	Torque		Assembled into Cast Iron or Steel					Aluminum

		Grade 2		Grade 5		Grade 8
Size	Measurement	Grade 2		Grade 5		Grade 8		Grade 2 or 5
8-32	Nm (in. lb.)	1.8	(16)	2.3	(20)	—		1.8	(16)

10-24	Nm (in. lb.)	2.9	(26)	3.6	(32)	—		2.9	(26)

10-32	Nm (in. lb.)	2.9	(26)	3.6	(32)	—		2.9	(26)

1/4-20	Nm (in. lb.)	6.8	(60)	10.8	(96)	14.9	(132)	6.8	(60)

1/4-28	Nm (in. lb.)	8.1	(72)	12.2	(108)	16.3	(144)	8.1	(72)

5/16-18	Nm (in. lb.)	13.6	(120)	21.7	(192)	29.8	(264)	13.6	(120)

5/16-24	Nm (in. lb.)	14.9	(132)	23.1	(204)	32.5	(288)	14.9	(132)

3/8-16	Nm (ft. lb.)	24.0	(18)	38.0	(28)	53.0	(39)	24.0	(18)

3/8-24	Nm (ft. lb.)	27.0	(20)	42.0	(31)	60.0	(44)	27.0	(20)

7/16-14	Nm (ft. lb.)	39.0	(29)	60.0	(44)	85.0	(63)	—

7/16-20	Nm (ft. lb.)	43.0	(32)	68.0	(50)	95.0	(70)	—

1/2-13	Nm (ft. lb.)	60.0	(44)	92.0	(68)	130.0	(96)	—

1/2-20	Nm (ft. lb.)	66.0	(49)	103.0	(76)	146.0	(108)	—

9/16-12	Nm (ft. lb.)	81.0	(60)	133.0	(98)	187.0	(138)	—

9/16-18	Nm (ft. lb.)	91.0	(67)	148.0	(109)	209.0	(154)	—

5/8-11	Nm (ft. lb.)	113.0	(83)	183.0	(135)	259.0	(191)	—

5/8-18	Nm (ft. lb.)	128.0	(94)	208.0	(153)	293.0	(216)	—

3/4-10	Nm (ft. lb.)	199.0	(147)	325.0	(240)	458.0	(338)	—

3/4-16	Nm (ft. lb.)	222.0	(164)	363.0	(268)	513.0	(378)	—

1-8	Nm (ft. lb.)	259.0	(191)	721.0	(532)	1109.0	(818)	—

1-12	Nm (ft. lb.)	283.0	(209)	789.0	(582)	1214.0	(895)	—

Metric Fasteners Torque Specifications, Measured in Nm (ft. lb.)

			Assembled into Cast Iron or Steel					Assembled into
								Aluminum
		Grade 5.8		Grade 8.8		Grade 10.9		Aluminum
Size (mm)		Grade 5.8		Grade 8.8		Grade 10.9		Grade 5.8 or 8.8
M6	x 1.00	5.6	(4)	9.9	(7)	14.0	(10)	5.6	(4)

M8	x 1.25	13.6	(10)	25.0	(18)	35.0	(26)	13.6	(10)

M8	x 1.00	21.0	(16)	25.0	(18)	35.0	(26)	21.0	(16)

M10 x 1.50		27.0	(20)	49.0	(35)	68.0	(50)	27.0	(20)

M10 x 1.25		39.0	(29)	49.0	(35)	68.0	(50)	39.0	(29)

M12 x 1.75		47.0	(35)	83.0	(61)	117.0	(86)		—

M12 x 1.50		65.0	(48)	88.0	(65)	125.0	(92)		—

M14 x 2.00		74.0	(55)	132.0	(97)	185.0	(136)		—

M14 x 1.50		100.0	(74)	140.0	(103)	192.0	(142)		—

M16 x 2.00		115.0	(85)	200.0	(148)	285.0	(210)		—

M16 x 1.50		141.0	(104)	210.0	(155)	295.0	(218)		—

M18 x 2.50		155.0	(114)	275.0	(203)	390.0	(288)		—

M18 x 1.50		196.0	(145)	305.0	(225)	425.0	(315)		—

A-4 Appendix

TP-6138 5/02

Appendix C General Torque Specifications

10-24

10-32

10.8

14.9

(132)

12.2

(108)

16.3

(144)

5/16-18

13.6

(120)

21.7

(192)

29.8

(264)

5/16-24