Capscrew Markings And Torque Values - Metric; Metric Capscrew Nomenclature - Dodge D250 1990 Service Manual

Base Engine Components
DODGE Turbo Diesel
Specifications
Page 9L-3
Capscrew Markings and Torque Values - Metric
Metric capscrews are identified by the grade number stamped on the head of the capscrew or on the surface of
metric nuts. The higher the number, the greater the strength of the capscrew.
Commercial Steel Class
d Diameter
Torque Torque Torque
mm N-m [fWb] N-m [ft-lb] N-m [ft-lb]
5 6
[5]
8
[61
8
[61
6 9 [7] 14 [10] 15 [11]
8 24 [18] 34 [25] 38 [28]
10 43 [32] 64 [47] 77 [57]
12 77 [57] 112 [831 137 [101]
14 127 [94] 180 [133] 216 [159]
16 195 [144] 266 [196] 319 [235]
Notes:
1. Do not use these values when the torque values are specified in another section of the manual.
2. These values are based on dean, dry threads. Reduce the value by 10% when a lubricant is used. Reduce the
value by 20% if new plated capscrews are used.
3. Always use caution to be sure that capscrews from the engine are put back in their proper locations.
4. When replacing capscrews, always use a capscrew of the same dimensions and strength as the capscrew
being replaced. Incorrect capscrews can result in engine damage.
Metric Capscrew Nomenclature
M8 X 1.25 - 25
Length in millimeters
Distance between threads in millimeters
Major thread diameter in millimeters