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Torque values are in Nm. Values in parenthesis ( ) are English equivalents.

Metric Fasteners | English Fasteners | Oil Drain Plugs | Torque Conversions


Metric Fasteners

Tightening Torque: Nm (in. lb.) + or - 10%
Property Class
Size 4.8 5.8 8.8 10.9 12.9 Noncritical
Fasteners
Into
Aluminum
M4 1.2 (11) 1.7 (15) 2.9 (26) 4.1 (36) 5.0 (44) 2.0 (18)
M5 2.5 (22) 3.2 (28) 5.8 (51) 8.1 (72) 9.7 (86) 4.0 (35)
M6 4.3 (38) 5.7 (50) 9.9 (88) 14.0 (124) 16.5 (146) 6.8 (60)
M8 10.5 (93) 13.6 (120) 24.4 (216) 33.9 (300) 40.7 (360) 17.0 (150)

Tightening Torque: Nm (ft. Ib.) + or - 10%
Property Class
Size 4.8 5.8 8.8 10.9 12.9 Noncritical
Fasteners
Into
Aluminum
M10 21.7 (16) 27.1 (20) 47.5 (35) 66.4 (49) 81.4 (60) 33.9 (25)
M12 36.6 (27) 47.5 (35) 82.7 (61) 116.6 (86) 139.7 (103) 61.0 (45)
M14 58.3 (43) 76.4 (55) 131.5 (97) 184.4 (136) 219.7 (162) 94.9 (70)

 

English Fasteners

Tightening Torque: Nm (in. Ib.) + or - 20%
Bolts, Screws, Nuts and Fasteners
Assembled Into cast Iron or Steel
Grade 2 or 5
Fasteners into
Aluminum
Size

Grade 2

Grade 5

Grade 8

8-32 2.3 (20) 2.8 (25)   2.3 (20)
10-24 3.6 (32) 4.5 (40)   3.6 (32)
10-32 3.6 (32) 4.5 (40)    
1/4-20 7.9 (70) 13.0 (115) 18.7 (165) 7.9 (70)
1/4-28 9.6 (85) 15.8 (140) 22.6 (200)  
5/16-18 17.0 (150) 28.3 (250) 39.6 (350) 17.0 (150)
5/16-24 18.7 (165) 30.5 (270)    
3/8-16 29.4 (260)      
3/8-24 33.9 (300)      

Tightening Torque: Nm (ft. Ib.) + or - 20%
Bolts, Screws, Nuts and Fasteners
Assembled Into cast Iron or Steel
Size

Grade 2

Grade 5

Grade 8
Size - - -
5/16-24 - - 40.7 (30)
3/8-16 - 47.5 (35) 67.8 (50)
3/8-24 - 54.2 (40) 81.4 (60)
7/16-14 47.5 (35) 74.6 (55) 108.5 (80)
7/16-20 61.0 (45) 101.7 (75) 142.4 (105)
1/2-13 67.8 (50) 108.5 (80) 155.9 (115)
1/2-20 94.9 (70) 142.4 (105) 223.7 (165)
9/16-12 101.7 (75) 169.5 (125) 237.3 (175)
9/16-18 135.6 (100) 223.7 (165) 311.9 (230)
5/8-11 149.2 (110) 244.1 (180) 352.6 (260)
5/8-18 189.8 (140) 311.9 (230) 447.5 (330)
3/4-10 199.3 (150) 332.2 (245) 474.6 (350)
3/4-16 271.2 (200) 440.7 (325) 637.3 (470)

 

Oil Drain Plugs (All Models)

Size Into Cast Iron Into Aluminum
1/8" NPT - 4.5 (40 in. Ib.)
1/4" 17.0 (150 in. Ib.) 11.3 (100 in. Ib.)
3/8" 20.3 (180 in. Ib.) 13.6 (120 in. Ib.)
1/2" 27.1 (20 ft. Ib.) 17.6 (13 ft. Ib.)
3/4" 33.9 (25 ft. Ib.) 21.7 (16 ft. Ib.)
X-708-11 27.1/33.9 (20/25 ft. Ib.) 27.1/33.9 (20/25 ft. Ib.)

1 3/8-16 thread with hex. head nut and fiber gasket.


Torque Conversions

Nm = in. lb. x 0.113
Nm = ft. lb. x 1.356
in. lb. = Nm x 8.85
ft. lb. = Nm x 0.737

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