Perkins 103-06 Workshop Manual page 79

Bolt head
Screw identification
size marks as per
grade
4T, 4.8
M6 7T, 8T, 8.8
10T 11T
4T, 4.8
M8 7T, 8T, 8.8
10T 11T
4T, 4.8
M10 7T, 8T, 8.8
10T, 11T
4T, 4.8
M12 7T, 8T, 8.8
10T, 11T
4T, 4.8
M14 7T, 8T, 8.8
10T, 11T
4T, 4.8
M16 7T, 8T, 8.8
10T, 11T
4T, 4.8
M18 7T, 8T, 8.8
10T, 11T
4T, 4.8
M20 7T, 8T, 8.8
10T, 11T
SS41
-°
SGD41-D S45C
SWRM12
\
E
/
4T 8T
M
8
L
a+
O
m
4.8
88
TIGHTENING TORQUE TABLES
Coarse thread
Screw Tightening torque
pitch
(mm) lbs-ft
3.6-5.1
1.0 6.1-8.3
8.7--11.6
9.4-12.3
1.25 16.6-21.0
21.0--26.8
18.8-24.6
1.5 32.6--41.2
39.8--51.4
27.5--34.7
1.75 55.7-61.5
68.0-85.4
46.3--59.3
2.0 76.7-96.9
103-129
63.7-81.0
2.0 110--136
152-188
83.9-104
2.0 145-174
203-246
106-132
2.5 177-213
268-326
SCM435
10T
/
I
0 0 1 0 - 1
Screw
pitch
N.m (mm)
4.9-6.9
8.3--11.3
11.8---15.7
12.7-16.7 11.2-14.8
22.6--28.4 1.0
19.5-25.3
28.4-36.3 22.4-29.7
25.5-33.3 21.0--26.8
44.1-55.9 1.25
36.2-46.3
53.9-69.6
42.7-54.3
37.3--47.1 31.8-40.5
65.7-83.4 1.25
55.0-69.5
92.2-116 73.1---93.3
62.8-80.4 51.4-64.4
104-131 1.5 86.1--109
139-175
109-137
86.3--110 67.3-84.6
149-184 1.5 116-142
206-255 163-199
114-141 96.9-120
196-235 1.5
170-206
275-333 221--271
144-1.79 127-156
240-289 1.5 203-246
363-441
293-358
Fine thread
Tightening torque
lbs-ft N.m
15.2-20.1
26.5-34.3
30.4-40.2
28.4-36.3
49.0-62.8
57.9-73.6
43.2-54.9
74.5-94.1
99.1--127
69.6-87.3
117-148
147-186
91.2-115
157-192
221-270
131-163
230-279
299-368
172-211
275-333
397-485