Fuzes & Components

M505A3 Point Detonating Fuze Assembly

M505A3 Fuze Assembly is a mechanical point detonating, super quick fuze for 20MM and 25MM, HE, HEI, & HEIT ammunition and is predominantly used against light ground targets and air-to-air engagements. The initiating explosive element for theM505A3 Fuze consists of a M57A1 Stab Detonator, sealed and staked within a Rotor Ball type S&A Device and restrained in a safe position by a C-shaped Detent Spring engaged in the shoulder of the Rotor Ball. The output energy of the M505A3 Fuze is derived from a Booster Assembly sealed and torqued in the aft end of the fuze.


M55 Detonator

Booster Assembly

M57A1 Stab Detonator

M100 Detonator


Pyrotechnic Specialties, Inc. manufactures explosives fuzes and detonators from its 380-acre production plant in Byron, GA.