Bulk 1-3/8"-12 Socket Head Cap Screws – Fine Thread, Alloy Steel, Black Oxide – Monster Bolts Size_9/16"-12 distributing load evenly while maintaining

distributing load evenly while maintaining a smooth

Drive: Phillips #1 cross recess—compatible with precision manual and automated drivers

abrasion resistance

Lightweight

Bulk 1-3/8"-12 Socket Head Cap Screws – Fine Thread, Alloy Steel, Black Oxide – Monster Bolts Size_9/16"-12 distributing load evenly while maintainingMonster Overview: Fix your project right the first time with Bulk 1 3 8" 12 Socket Head Cap Screws from Monster Bolts. Precision made from high strength alloy steel and finished with a thermal black oxide coating, these fine thread (UNF) fasteners provide superior torque control, smooth threading, and consistent performance. Ideal for precision mechanical, structural, and industrial applications requiring high clamping force and alignment accuracy.