Value Collection KP60860 Serrated Flange Bolt 1/4-20 Unc

Product Description

The VALUE COLLECTION KP60860 is a serrated flange bolt designed for secure, vibration-resistant fastening in mechanical and structural assemblies. The serrated flange face bites into the mating surface as the fastener is tightened, distributing clamp load across the 0.56-inch flange diameter while resisting loosening from vibration or dynamic loads. The bolt is fully threaded to 1/4-20 UNC over a 1-inch length under head, made from Grade 5 steel, and finished in zinc yellow dichromate for corrosion protection. These are sold in a pack of 50 and conform to ASME B18.6.3 and SAE J429 standards. Licensed mechanics, millwrights, maintenance technicians, and general contractors commonly install this fastener type.

This bolt is appropriate for light-duty to medium-duty fastening applications in sheet metal, machinery frames, HVAC equipment enclosures, electrical panels, and general fabrication assemblies. The 1/4-20 UNC thread is one of the most common unified coarse thread sizes in inch-standard applications, making this bolt a frequently stocked replacement or new-construction fastener for maintenance and repair operations. The serrated flange eliminates the need for a separate lock washer in most applications.

Key Features

• 1/4-20 UNC fully threaded, 1-inch length under head for maximum thread engagement in thin materials
• Serrated flange diameter of 0.56 inches distributes clamp load and resists loosening under vibration
• Grade 5 steel construction meets SAE J429 mechanical property requirements
• Zinc yellow dichromate finish provides corrosion resistance in indoor and light-exposure environments
• Hex drive for standard socket or wrench installation
• Conforms to ASME B18.6.3 and SAE J429 standards
• Pack of 50 for shop stock, maintenance kits, or production use

Compatibility

Designed as a standard 1/4-20 UNC serrated flange bolt suitable for use wherever a 1/4-20 inch-series fastener with an integrated locking flange is required in equipment manufacturing, HVAC enclosures, or general mechanical assembly.

Installation Notes

Install with a standard hex socket or open-end wrench sized for the hex drive. Ensure the mating surface is clean and free of debris so the serrated flange can seat properly and provide its locking function. Power down or de-energize any equipment before installing fasteners on live assemblies. Do not reuse serrated flange bolts in critical joints after removal, as the serrations may not re-engage the mating surface with the same effectiveness.