
This fuze is a mechanical time superquick (MTSQ) type for antiaircraft use. Fuze M502A1 is superior to fuze M502 because of additional safety features.
No information about functioning.
No information about hazardous components.
MIL-HDBK-146, Fuze Catalog (1982)
TM 9-1300-203, Artillery Ammunition (1967)
TM 9-1385-51, Ammunition (Conventional) for Explosive Ordnance Disposal (1967)