Infantry weapons / Grenades / M67

M67

General Facts

  • TYPE
    Hand grenade

  • ORIGIN
    United States

  • NICKNAMES
    C13 (Canadian designation for M67)
    Baseball Frag (popular nickname)

  • DESIGNED
    Late 1950's

  • DESIGNER
    US Army Matérial Readiness Command

  • PRODUCTION
    Late 1960's

  • PRODUCERS
    Canada - General Dynamic United States - US Army Matérial Readiness Command

  • QUANTITY
    Unknown

  • UNIT COST
    About $4 for M67

  • CHARACTERISTICS
    Good lethality
    Limited weight
    Average casualty radius

Introduction

The M67 is a hand grenade of US origin. The M67 was developed to replace the earlier M26 series. The M67 is smaller and lighter and can be thrown over longer ranges. The M67 was known as the M33 before the product improvement program. Reportedly the M67 has a shape and weight similar to a baseball, which would decrease training costs as many US soldiers would already be familiar with throwing a similar shaped object with accuracy.

Design

The M67 is a defensive grenade. The M67 started out as the M33 and is essentially and M33 with additional safety clip. The M67 has a spherical body and features a large safety lever. The fuze is in the middle and surrounded by explosive. The steel outer body will turn into fragments upon explosion. The M67 has a 4 to 5 second time delay fuze, which starts as soon as the safety lever is released. The M68 is a derivative with impact fuze.

Firepower

The M67 is filled with Composition B explosive and the steel body will turn into splinters. The casualty radius is 5 m and wounding radius is 15 m. Fragments may reach as far as 250 m. The average soldier may throw the M67 out to 30 m and ranges of 40 m can be achieved.

Users

The main user of the M67 and M68 grenades is the US military. It also has been exported to various nations, including Canada.

Variants

M67

The M67 is a delay fragmentation grenade. It has a spherical body and large safety lever. The time delay is 4 to 5 seconds. The orignal designation is M33, when fitted with an additional safety slip it is called the M67. The M68 is an impact derivative of the M67. At first it was known as the M33A1, later redesignated as the M59 and when fitted with an additional safety clip it is called the M68. The body, filling, weight and dimensions are idential to the M67. The difference lies in the fuze, which is an impact fuze. The unusual feature is that this impact fuze has a time delay as backup. Should the grenade not explode due to the impact then after 7 to 9 seconds the time delay fuze will detonate the grenade. The M69 is an inert training versions. Due to the US adoption of safety clips the M33 and M59 are uncommon compared to the widely proliferated M67.

TypeDefensive hand grenade
Diameter64 mm
Length90 mm
Weight0.390 kg
FuseM213, 4 - 5 second time delay
Filling185 g Comp B, pre-notched steel body
Effect5 m lethal radius, 15 m casualty radius
VelocityHand thrown
RangeHand thrown, up to 40 m
Remarks-
TypeDefensive hand grenade
Diameter64 mm
Length90 mm
Weight0.390 kg
FuseM217, impact with backup 7 second time delay
Filling184 g Comp B, pre-notched steel body
Effect5 m lethal radius, 15 m casualty radius
VelocityHand thrown
RangeHand thrown, up to 40 m
Remarks-

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