m3 m4 m5 5/16 Black Stainless Steel Slotted Socket Cap Head Step Screw Shoulder Bolts
Discover the ISO 7379 M3 M4 M5 5/16 Black Alloy Steel Allen Socket Cap Head Step Screw Shoulder Bolts, engineered for precision alignment and load distribution. These high-strength bolts feature a black oxide finish, socket cap head, and unthreaded shoulder, ideal for machinery, automotive, and automation systems. Fully compliant with ISO 7379 standards.