This is a bolt with a wide, countersunk flat head, a shallow conical bearing surface, an integrally-formed square neck under the head, and a unified pitch. A popular use for this bolt is in a conveyor system.
Nominal Size or
Basic Bolt
Diameter |
E Body
Diameter
|
A |
H Head
Height
|
0 |
P |
| Head Diameter |
Square
Width |
Square
Depth |
Max.
Edge
Sharp |
Min.
Edge
Sharp |
Min.
Edge
Flat |
| Max. |
Min. |
Max. |
Min. |
Max. |
Min. |
Max. |
Min. |
1/4 0.2500
5/16 0.3125
3/8 0.3750 |
0.260
0.324
0.388 |
0.237
0.298
0.360 |
1.008
1.227
1.352 |
0.969
1.188
1.312 |
0.938
1.157
1.272 |
0.098
0.114
0.145 |
0.087
0.094
0.125 |
0.280
0.342
0.405 |
0.245
0.307
0.368 |
0.219
0.250
0.250 |
0.188
0.219
0.219 |
