Bulk M12 Socket Head Cap Screws – 12.9 Alloy Steel, Black Oxide Opti Seal these locknuts offer exceptional durability

these locknuts offer exceptional durability

Hex Keys: Find 3/8" hex keys and bits here

designed to provide reliable locking strength and resistance against loosening due to vibration

Matching Washers: M1

Thread: #0-80 UNC (Coarse Thread) for reliable engagement in small-format tapped holes

Bulk M12 Socket Head Cap Screws – 12.9 Alloy Steel, Black Oxide Opti Seal these locknuts offer exceptional durabilityMonster Overview: Power up your toughest assemblies with M12 Socket Head Cap Screws from Monster Bolts. Built from Class 12. 9 alloy steel and coated in thermal black oxide, these high strength fasteners deliver superior torque control, exceptional tensile performance, and a clean, professional appearance. The robust 10 mm hex drive provides deep engagement for maximum tightening power in structural, industrial, and heavy equipment applications.