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TM 10-3930-671-24
NOTE
The following torque values are to be used only if torque value for specific part to be installed is not listed on preceding
sheets.
TORQUE (Phosphate Coated Fasteners)
THD
Class 8.8
Class 9.8
Class 10.9
SIZE
N m
lb-ft
N m
lb-ft
N m
lb-ft
M6
8-11
6-8
8-11
6-8
M8
20-24
15-18
20-24
15-18
M10
34-40
25-30
34-40
25-30
M12
75-81
55-60
75-81
55-60
M14
122-135
90-100
122-135
90-100
M16
190-203
140-150
190-203
140-150
M20
PROPERTY CLASS MARKING
BOLTS AND SCREWS:
The property class symbols for metric bolts and screws
are given in table at right. Marking shall be located on
the top of the head. Alternatively, the marking may be
indented on the side of the head for hex head products.
STUDS:
All metric studs used on TMD engines are of property
class 10.9. If marked, marking will be at nut end.
PROPERTY
CLASS
IDENTIFICATION SYMBOL
BOLTS, SCREWS AND
STUDS
STUDS
SMALLER
THAN M12
8.8
8.8
938
9.8
10.9
10.9
12.9
12.9
CYLINDER HEAD
Cold Torquing Procedure
Torque all cylinder head capscrews using the proper torquing sequence shown here.
F-190
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