This hand grenade was produced in the factory "DILJ" in Vinkovci, Croatia in 1991 for Croatian army.
This factory was producing construction materials like aggregats and hydraulic mechanisms,but when the war in ex-Yugoslavia begun, city of Vinkovci was jeopardized by constant serbian artillery shelling and it was very close to croatian territory occupied by Serbs.
Because of this the factory converted its program of manufacturing to military.The factory had large quantities of aluminium in its depot, so they decided to produce hand grenades made of that material. Those grenades were called "Vinkovčanka".

The body is externally fragmented into square-form fragments, and it had an alluminium cap at the top, in diametar the same as the grenade.
The cap was screwed to the body of the grenade with threads M33x3, and it had the small hole at the center for pyrotechnical slow-burning fuze which had the detonator No. 8.
The grenade could be thrown very far, because of its low weight. All grenades of this type were unpainted.

Just before the end of production, workers in the factory tested plastic explosive filler in this grenade, but because of the large temperature made at the moment of explosion of that kind of explosive (several times larger than temperature made during explosion of Vitezit), grenades would completly melt, so that this filler proved useless in this grenade type.
The serial production after that testing proceeded with Vitezit filling. Production stopped completly at the end of 1991 or at the beginning of 1992.

Total length : 90 mm
Diameter : 53 mm
Weight : unknown
Filling : 35-40 gram of Vitezit
Fuze delay : 6-7 seconds