Button Head | ||||||||
Nominal Size |
Head Dia. |
Head Height |
Drive Size |
Pin Dia. | ||||
Max |
Min |
Max |
Min |
Hex |
6 Lobe |
Max |
Min | |
6 |
.262 |
.250 |
.073 |
.063 |
1/8 |
T10 |
.050 |
.048 |
8 |
.312 |
.298 |
.087 |
.077 |
5/32 |
T15 |
.065 |
.062 |
10 |
.361 |
.347 |
.101 |
.091 |
5/32 |
T25 |
.065 |
.062 |
1/4 |
.437 |
.419 |
.132 |
.122 |
5/32 |
T27 |
.065 |
.062 |
5/16 |
.547 |
.527 |
.166 |
.152 |
3/16 |
T40 |
.087 |
.085 |
3/8 |
.656 |
.636 |
.199 |
.185 |
7/32 |
T45 |
.095 |
.090 |
Flat Head | |||||||
Nominal Size |
Head Dia. |
Head Height |
Drive Size |
Pin Dia. | |||
Max |
Min |
Ref. |
Hex |
6 Lobe |
Max |
Min | |
6 |
.307 |
.263 |
.097 |
1/8 |
T15 |
.050 |
.048 |
8 |
.359 |
.311 |
.112 |
5/32 |
T20 |
.065 |
.062 |
10 |
.411 |
.359 |
.127 |
5/32 |
T25 |
.065 |
.062 |
1/4 |
.531 |
.480 |
.161 |
5/32 |
T30 |
.065 |
.062 |
5/16 |
.656 |
.600 |
.198 |
3/16 |
T35 |
.087 |
.085 |
3/8 |
.781 |
.720 |
.234 |
7/32 |
T40 |
.095 |
.090 |