Bulk 1-3/8"-12 Socket Head Cap Screws – Fine Thread, Alloy Steel, Black Oxide – Monster Bolts Length:8 Qty - 1-3/8"-12 x 8" (PT) Cost-Effective Material: Low carbon steel

Cost-Effective Material: Low carbon steel with Zinc CR+3 provides dependable corrosion resistance at an affordable price

A4 (316) Marine Grade Stainless Steel is renowned for its exceptional corrosion resistance

these split lock washers offer superior corrosion resistance

Monster Bolts offers bulk fasteners with RoHS-compliant coatings

70 Stainless Steel 316 Button Socket Cap Screws

Bulk 1-3/8"-12 Socket Head Cap Screws – Fine Thread, Alloy Steel, Black Oxide – Monster Bolts Length:8 Qty - 1-3/8"-12 x 8" (PT) Cost-Effective Material: Low carbon steelMonster 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.