GMNA - GM C115
Metric Hex Washer Head Machine Screws
|Publication Date:||1 May 2011|
This standard for Metric Hex Washer Head Machine Screws conforms in all essentials, except head proportions, with the American National Standard covering metric machine 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.