Cylindrical head hexagon sock head screw, nanone byitwa nka hexagon sock head bolts, ibikombe byumutwe, hamwe na hexagon sock head screw, bifite amazina atandukanye, ariko bisobanura ikintu kimwe. Ubusanzwe ikoreshwa rya hexagon sock imitwe irimo icyiciro cya 4.8, icyiciro cya 8.8, icyiciro 10.9, nicyiciro 12.9. Byitwa hexagon sock screw, nanone bita hexagon sock bolts. Umutwe ni umutwe wa mpandeshatu cyangwa umutwe wa silindrike.