Xrf Bolt Torque Reference Chart
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1Torque Reference Chart
Metric (ISO 898) - Inch (SAE J429)
Minimum Strenghts
Metric
Inch
ISO 898
SAE J429
M6 - M16: 800 MPa
M6 - M16: 800 MPa
1040 MPa
1040 MPa
1220 MPa
1220 MPa
Class Tensile
Class Tensile
M20 - M30: 830 MPa
M20 - M30: 830 MPa
=
120,350 psi
150,800 psi
176,900 psi
Bolt Torque Specs in Foot Pounds or
(Inch Pounds)
Grade 4, 8 (4.6, 5.8)
Grade 2
Size/Thread
Dry
Oiled
Dry
Oiled
Dry
Oiled
Tensile:
Tensile: 429MPa
M5 x 0.80
(54)
(41)
(78)
(59)
(91)
(68)
60,900 psi
60,000 psi
M6 x 1.00
(92)
(69)
(133)
(99)
(156)
(116)
M7 x 1.00
(156)
(116)
(222)
(167)
(260)
(195)
M8 x 1.25
(225)
(169)
(333)
(242)
(377)
(284)
=
M10 x 1.50
37
28
53
40
62
47
M12 x 1.75
65
49
93
69
108
81
Grade 8.8
Grade 5
M14 x 2.00
104
78
148
111
173
130
Tensile:
Tensile: 830MPa
M16 x 2.00
161
121
230
172
269
202
120,350 psi
120,000 psi
M18 x 2.50
222
167
318
238
372
279
M20 x 2.50
314
235
449
337
525
394
M22 x 2.50
428
321
613
460
716
537
=
M24 x 3.00
543
407
776
582
908
681
M27 x 3.00
796
597
1139
854
1331
998
Grade 10.9
Grade 8
M30 x 3.50
1079
809
1543
1158
1804
1353
Tensile:
Tensile: 1040MPa
M33 x 3.50
1468
1101
2101
1576
2455
1842
150,800 psi
150,000 psi
M36 x 4.00
1886
1415
2699
2024
3154
2366
=
Grade 5
Grade 8
Grade ASTM-A574
Grade 12.9
Grade ASTM-A574
Class Tensile
Tensile:
Tensile: 1220MPa
120,000 psi
150,000 psi
170,000 psi
176,9000 psi
170,000 psi
Bolt Torque Specs in Foot Pounds or
(Inch Pounds)
Size/Thread
Dry
Oiled
Dry
Oiled
Dry
Oiled
1/4-20
(101)
(76)
(143)
(107)
(168)
(120)
1/4-28
(116)
(87)
(147)
(123)
(192)
(144)
5/16-18
(209)
(157)
(295)
(221)
(348)
(264)
5/16-24
(231)
(174)
(327)
(245)
(384)
(288)
3/8-16
(372)
(276)
44
33
51
38
3/8-24
(420)
(312)
49
37
58
43
7/16-14
49
37
70
52
81
61
7/16-20
55
41
78
58
91
68
1/2-13
75
57
106
80
124
93
1/2-20
85
64
120
90
140
105
5/8-11
150
113
212
159
238
179
5/8-18
170
127
240
180
270
202
3/4-10
267
200
376
282
423
317
3/4-16
297
223
420
315
472
354
7/8-9
429
322
606
455
682
511
7/8-14
474
355
669
502
752
564
1-8
644
483
909
681
1022
767
1-12
722
542
1020
765
1147
860
Note: These charts are provided as a Reference only. Always refer to vehicle manufactures recommended Torque setting for the specific
application. XRF Inc. has made every effort to insure the data provided in these charts is accurate.
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