[600 BULK] Flange Bolts Serrated Hex Washer Case Hardened Zinc 1/4-20 X 4

Flange Bolts Serrated Hex Washer Case Hardened Zinc 1/4-20 X 4 provide reliable fastener performance for a wide range of applications. With a flange head and a built-in serrated hex washer, these bolts distribute clamping force evenly and resist loosening under vibration, making them ideal for automotive, machinery, and general equipment assemblies.

Constructed from carbon steel and finished with a durable case-hardened zinc coating, they offer enhanced strength and long-term corrosion resistance in indoor and light outdoor environments.

• Thread size: 1/4-20 UNC
• Length: 4 inches
• Head type: Flange head with integrated serrated hex washer for secure seating
• Material and finish: Carbon steel with case-hardened zinc coating for strength and corrosion resistance
• Typical uses: Mechanical assemblies, equipment, automotive, and machinery where a flush, secure mounting is needed

For best results, pair with compatible nuts and washers and ensure proper torque to maintain clamp load and prevent loosening in dynamic environments.