720-tlg. M3 M4 M5 M6 Muttern und Schrauben Set, schwarze Schrauben und Muttern Set, Rundkopf Sechskant
Round Head Hexagon Socket Bolts Design: The threads are tight, the force is even, and the inner hexagon design is not easy to deform and slide during installation; matching nuts and washers can reduce stress and protect parts and screws.