Bulk M42 Socket Head Cap Screws – 12.9 Alloy Steel, Black Oxide Drive_External Hex • All Bulk Metric Socket

• All Bulk Metric Socket Cap Screws

Pair these UNF bolts with USA-made 1/2-20 hardware:

vibration-resistant threads—ideal for miniature electronics

Our washers match the dimensional specifications of N400

Bulk M42 Socket Head Cap Screws – 12.9 Alloy Steel, Black Oxide Drive_External Hex • All Bulk Metric SocketMonster Overview: When maximum structural integrity is essential, M42 Socket Head Cap Screws from Monster Bolts are the benchmark for strength and precision. Manufactured from Class 12. 9 alloy steel and treated with a thermal black oxide finish, these fasteners deliver exceptional tensile strength, deep drive engagement, and a clean, professional appearance. The oversized 32 mm hex drive provides robust torque transmission for heavy equipment, plant