Buy Today [1000 BULK] Flange Bolts Serrated Hex Washer Case Hardened Zinc 5/16-18 X 1 1/2

Secure fastenings with our Flange Bolts Serrated Hex Washer Case Hardened Zinc 5/16-18 x 1-1/2. Designed for heavy-duty applications, these bolts combine a flange head with a serrated hex washer to distribute clamping force and resist loosening under vibration.

Crafted from case-hardened steel and finished with zinc plating, they deliver excellent strength and corrosion resistance for prolonged service in automotive, machinery, and industrial equipment assemblies.

Key features

Size & thread: 5/16-18 UNC thread, length 1-1/2 inches.

Head style: Flange head with a built-in serrated hex washer for uniform load distribution.

Material & finish: Case-hardened steel with zinc plating for durability and corrosion resistance.

Vibration resistance: Serrated washer helps prevent loosening during operation.

Applications: Ideal for automotive, machinery, equipment, and industrial assemblies where a strong, reliable flush mounting is required.

For best results, ensure proper thread engagement and use with compatible nuts and washers as part of a secure fastening system.