Name: M21 Anti-Tank, Heavy
Wt: 17.5 lbs.
Burst Radius:
DPW:
11428 Main chg Comp H-6 10.8 lb 4.9 kg
Packaging: 2 mines w/2 fuzes w/2 boosters in barrier bag. 2 bags (4 mines) w/2 wrenches in wire-bound box
Package Wt: 90 lb
Package Dimensions: 29-1/4 x 12-1/2 x13-1/2 in.
Effects.
Use:
Mine M21 is used primarily for destroying tanks and tracked and wheeled vehicles. It is a standoff type that can penetrate 3-inch armor plate at a distance of 21 inches. It also functions as a blast-type mine (E-factor 204)
Functioning:
The fuze M607 for the mine is actuated by applying a horizontal force greater than 3.75 pounds at the end of the extension rod. The fuze is also actuated by a directly applied downward force of 290 pounds. The fuze ignites the black powder expelling charge in the mine and the resulting detonation opens up the mine cover and removes the earth covering the mine. Back pressure from the burning propellant drives the firing pin into the M42 primer which, in turn, ignites the delay assembly. After 0.15 second, the relay assembly is detonated, firing the M120 booster, which, in turn, fires the main charge. The steel dish is then driven at high velocity against the target. The arming wrench M26 is provided for use with this mine and fuze.