Bulk M12 Socket Head Cap Screws – 12.9 Alloy Steel, Black Oxide Opti Seal making them a top choice

making them a top choice for a wide range of applications

Whether you crave superior tuning stability or a fresh style

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

✔️ High-Quality Tools Built to Last

Bulk M12 Socket Head Cap Screws – 12.9 Alloy Steel, Black Oxide Opti Seal making them a top choiceMonster 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.