Carriage Bolts
Also known as a “coach” bolt, has a domed or countersunk head. The square section under the head grips into the part being fastened preventing the bolt from turning when the nut is tightened.
Diameter
(d)
Pitch
dk
k
f
v
M5
M6
0.80
1.00
13.55-12.45
16.55-15.45
3.30-2.70
3.88-3.12
4.10-2.90
4.60-3.40
5.48-4.52
6.48-5.52
M8
1.25
20.65-19.35
4.88-4.12
5.60-4.40
8.58-7.42
M10
1.50
24.65-23.35
5.38-4.62
6.60-5.40
10.58-9.42
M12
1.75
30.65-29.35
6.95-6.05
8.75-7.25
12.70-11.30
M16
2.00
38.80-37.20
8.95-8.05
12.90-11.10
16.70-15.30
