Miscellaneous
AM24480,000035F -19-29FEB16-1/1
Metric bolt and cap-screw torque values
METRIC BOLT AND CAP-SCREW TORQUE VALUES
Unless otherwise specified, the tolerance is ±10%
T
ORQ2
—UN—15APR13
Top: Property class and head markings; Bottom: Property class and nut markings
The following data is intended to assist in the general machine maintenance.
It is recommended you only use grade 10.9 (or higher) hardware.
Class 4.8
Class 8.8 / 9.8
Class 10.9
Class 12.9
Thread
Size
Lubricated
a
N·m (lb-ft)
Dry
b
N·m (lb-ft)
Lubricated
a
N·m (lb-ft)
Dry
b
N·m (lb-ft)
Lubricated
a
N·m (lb-ft)
Dry
b
N·m (lb-ft)
Lubricated
a
N·m (lb-ft)
Dry
b
N·m (lb-ft)
M6
4.7 (3.5)
6 (4.4)
9 (6.6)
11.5 (8.5)
13 (9.5)
16.5 (12.2)
15.5 (11.5)
19.5 (14.5)
M8
11.5 (8.5)
14.5 (10.7)
22 (16)
28 (20.5)
32 (23.5)
40 (29.5)
37 (27.5)
47 (35)
M10
23 (17)
29 (21)
43 (32)
55 (40)
63 (46)
80 (59)
75 (55)
95 (70)
M12
40 (29.5)
50 (37)
75 (55)
95 (70)
110 (80)
140 (105)
130 (95)
165 (120)
M14
63 (46)
80 (59)
120 (88)
150 (110)
175 (130)
220 (165)
205 (150)
260 (190)
M16
100 (74)
125 (92)
190 (140)
240 (175)
275 (200)
350 (255)
320 (235)
400 (300)
M18
135 (100)
170 (125)
265 (195)
330 (245)
375 (275)
475 (350)
440 (325)
560 (410)
M20
190 (140)
245 (180)
375 (275)
475 (350)
530 (390)
675 (500)
625 (460)
790 (580)
M22
265 (195)
330 (245)
510 (375)
650 (480)
725 (535)
920 (680)
850 (625)
1080 (800)
M24
330 (245)
425 (315)
650 (480)
820 (600)
920 (680)
1150 (850)
1080 (800)
1350 (1000)
M27
490 (360)
625 (460)
950 (700)
1200 (885)
1350 (1000)
1700 (1250)
1580 (1160)
2000 (1475)
M30
660 (490)
850 (625)
1290 (950)
1630 (1200)
1850 (1350)
2300 (1700)
2140 (1580)
2700 (2000)
M33
900 (665)
1150 (850)
1750 (1300)
2200 (1625)
2500 (1850)
3150 (2325)
2900 (2150)
3700 (2730)
M36
1150 (850)
1450 (1075)
2250 (1650)
2850 (2100)
3200 (2350)
4050 (3000)
3750 (2770)
4750 (3500)
a
"Lubricated" means coated with a lubricant such as engine oil, or fasteners with phosphate and oil coatings.
b
"Dry" means plain or zinc-plated without any lubrication.
CAUTION: Only use metric tools with metric
hardware; other tools might not fit properly, which
may cause the tool to slip, resulting in injury.
DO NOT use these values if a different torque value or
tightening procedure is given for a specific application.
The torque values listed are for general use only.
Ensure you check the tightness of fasteners periodically.
As shear-bolts are designed to fail under pre-determined
loads, you should always replace shear-bolts with an
identical grade.
Only replace fasteners with those of the same grade or
higher; where a higher-grade fastener is used, ensure
only tighten them to the strength of the original.
Ensure fastener threads are clean and that you start
thread-engagement properly; taking these steps will
minimise the risk of fasteners failing when they are being
tightened.
Tighten plastic insert- or crimped steel-type lock-nuts to
approximately 50 per cent of the dry torque shown in the
chart, and tighten toothed- or serrated-type lock-nuts to
the full torque vale. The torque value should be applied to
the nut, not to the bolt-head.
4-1-3
090621
PN=58
Summary of Contents for FL85
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Page 79: ...Index Index 3 090621 PN 79...
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