
The Mechanical Impact Fuze M170 duplicates the AN-M120A1 in all respects except for the arming time, which is shortened to 1.5 (± 0.15) seconds in the M170.
The M120 and AN-M120 did not have the clockwork regulator, and had an arming time of 2.5 (±0.25) seconds; hence, attacks had to be made at higher levels. External appearance of all designs is the same.
This fuze replaced the AN-M104 in the parachute fragmentation bomb.
The M170 is designed to supplant the AN-M120A1 in all bombs receiving the AN-M120A1, except for the 120 pound Para. Frag. Bomb M86, which will continue to use the older fuze
No information about functioning.
No information about hazardous components.
MIL-HDBK-146, Fuze Catalog (1982)
TM 9-1385-51, Ammunition (Conventional) for Explosive Ordnance Disposal (1967)
OP 1664, Volume 2 - US Explosive Ordnance (1947)
USNBD - Bombs and Fuzes, Pyrotechnics (1945)