GMNA - GM D115
Metric Hex Washer Head Tapping Screws Types AB, B, BF and BT
| Organization: | GMNA |
| Publication Date: | 1 February 2011 |
| Status: | inactive |
| Page Count: | 4 |
scope:
GENERAL
This standard for Metric Hex Washer Head Tapping Screws of thread forming Types AB and B and thread cutting Types BF and BT conforms in all essentials, other than head proportions, with the American National Standard covering metric tapping screws. The basic head dimensions agree with those included in earlier national standard proposals for the hex washer head and since replaced therein by the hex flange head.
Document History