UNI 5737-1977

Metric hexagon head bolts

UNI 5739-1965

Hexagon head screws threaded up the head

UNI 5732-1965

Mushroom head square neck bolts

UNI 6105-1976

Flat head bolt with reverse key

UNI 5712

Hexagon bolts with large width across flats for high strength structural bolting

UNI 5740

Hexagon head bolts with fine pitch thread

UNI 5725

Hexagon head bolts-Full thread

UNI 5738

Hexagon head bolts with fine pitch thread

UNI 5731

Mushroom head square neck bolts