F-1 grenade
Russia
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The Soviet F-1 hand grenade is an anti-personnel fragmentation defensive grenade. It is based on the French F1 grenade and contains a 60 g explosive charge. The total weight of the grenade with the fuze is about 600 g.
Due to its shape and its... Wikipedia
Detonation mechanism: Time delay fuse 3.2 to 4.2 s
Diameter: 55 mm (2.2 in)
Filling: Trinitrotoluene
In service: 1939–present (Russia)
Mass: 600 g (1.3 lb)
Place of origin: Soviet Union