Tightening Torque Specifications; Flanged Head Bolt - Isuzu A-4JA1 Workshop Manual

GENERAL INFORMATION
The tightening torque values given in the table below are applicable to the bolts unless otherwise
specified.

FLANGED HEAD BOLT

Bolt head
marking
Nominal
size
(dia. x pitch)
M 6 × 1
M 8 × 1.25
M10 × 1.25
(17.35 – 28.20/23.53 – 38.24)
*M10 × 1.5
(16.63 – 27.48/22.55 – 37.26)
M12 × 1.25
(40.50 – 60.75/54.91 – 82.37)
*M12 × 1.75
(37.61 – 56.41/50.99 – 76.49)
M14 × 1.5
(61.48 – 91.85/83.35 – 124.54)
*M14 × 2
(57.14 – 85.34/77.47 – 115.71)
M16 × 1.5
(85.34 – 128.02/115.71 – 173.57)
*M16 × 2
(81.00 – 120.79/109.83 – 163.77)
A bolt with an asterisk (*) is used for female screws of soft material such as cast iron.
8

TIGHTENING TORQUE SPECIFICATIONS

0.5 – 0.9
(3.61 – 6.50/4.6 – 8.5
1.1 – 2.0
(7.95 – 14.46/10.78 – 19.61)
2.3 – 3.9
2.3 – 3.8
5.6 – 8.4
3.5 – 9.5
8.5 – 12.7
7.6 – 11.5
11.8 – 17.7
11.2 – 16.7
0.6 – 1.2
(4.33 – 8.67/5.88 – 11.76)
1.4 – 2.9
(4.33 – 8.67/5.88 – 11.76)
3.6 – 6.4
(26.03 – 44.12/35.30 – 59.82)
3.5 – 5.8
(25.31 – 41.95/34.32 – 56.87)
7.9 – 11.9
(57.14 – 86.07/77.47 – 116.69)
7.3 – 10.9
(52.80 – 78.83/71.58 – 106.89)
11.7 – 17.6
(84.62 – 127.30/114.73 – 172.59)
11.1 – 16.6
(80.28 – 120.06/108.85 – 162.79)
17.1 – 26.5
(125.85 – 189.50/170.63 – 256.93)
16.6 – 24.9
(120.06 – 180.10/162.79 – 244.18)
kgf·m (lb.ft/N·m)
1.9 – 3.4
(13.74 – 24.59/18.63 – 33.34)
4.3 – 7.2
(31.10 – 52.07/42.16 – 70.60)
4.1 – 6.8
(29.65 – 49.18/40.20 – 66.68)
8.7 – 13.0
(62.92 – 94.02/85.31 – 127.48)
8.1 – 12.2
(58.58 – 88.24/79.43 – 119.64)
12.6 – 18.9
(91.13 – 136.70/123.56 – 185.34)
11.8 – 17.7
(85.34 – 128.02/115.71 – 173.57)
18.0 – 27.1
(130.19 – 196.01/176.52 – 265.76)
17.2 – 25.7
(124.40 – 186.61/168.67 – 253.01)