[1000 BULK] Flange Bolts Serrated Hex Washer 5/16-18 X 1 Express Delivery

Flange Bolts Serrated Hex Washer 5/16-18 X 1 are engineered for high-strength, reliable fastening in a variety of metal-to-metal applications. Featuring a built-in flange and a serrated hex washer, these bolts distribute load and resist loosening from vibration, delivering a secure hold every time.

Designed for quick, tool-friendly installation, they pair a 5/16″ diameter with 18 threads per inch and a 1″ length to fit common assemblies. The combination of a hex head with a serrated washer provides both superior torque and grip on clean or lightly corroded surfaces.

Size: 5/16″ diameter

Thread pitch: 18 threads per inch

Length: 1″

Head type: Hex head with integrated flange

Washer: Serrated hex washer for enhanced grip

Purpose: Ideal for secure fastening in automotive, machinery, and general hardware projects