Bulk 3/8"-16 UNC Hex Cap Screws – USA-Made 18-8 Stainless (ASTM F593) | Monster Bolts Length:250 Qty - 3/8"-16 x 2-1/2" (PT) Automotive: High-strength screws for engines

Automotive: High-strength screws for engines and chassis components

Why Choose Our Zinc Plated SAE Flat Washers

Choose M48-5

Our flat washers are perfect for distributing load and reducing material wear in heavy-duty applications

Bulk 3/8"-16 UNC Hex Cap Screws – USA-Made 18-8 Stainless (ASTM F593) | Monster Bolts Length:250 Qty - 3/8"-16 x 2-1/2" (PT) Automotive: High-strength screws for enginesMonster Overview Fix your project right the first time with Bulk 3 8" 16 UNC Hex Cap Screws from Monster Bolts USA Made in 18 8 (304) stainless steel to ASTM F593. These coarse thread, corrosion resistant fasteners are built for industrial, marine, construction, and outdoor environments where quality, compliance, and reliability matter. Note: (PT) denotes partial thread fasteners. Monster Features USA Made: Precision manufacturing and lot traceability