Value Collection 454066PS Hex Head Cap Screw 1/4-28 X 5 in

Product Description

The VALUE COLLECTION 454066PS is a partially threaded hex head cap screw designed for high-strength fastening applications in industrial, mechanical, and structural assemblies. Manufactured from Grade 8 steel with a zinc yellow dichromate finish, this screw delivers superior tensile strength and corrosion resistance compared to lower-grade fasteners. The 1/4-28 UNF thread specification provides fine-thread engagement suited to precision assemblies where vibration resistance and tight tolerances matter. At 5 inches in length under the head, it is well suited to deeper stack-ups requiring a longer grip length. Installation is driven with a 7/16-inch hex key or wrench.

This fastener is used across a broad range of trade and industrial applications including HVAC equipment assembly, electrical enclosure mounting, plumbing fixture brackets, and general mechanical fabrication. The partially threaded shank provides a smooth bearing surface in the grip area, which is important when fastening through clearance holes where thread engagement is only needed at the nut or tapped hole end. It conforms to ASME B18.2.1 and SAE J429 standards, making it appropriate for use in code-compliant assemblies requiring documented material and dimensional standards.

Key Features

• Grade 8 steel construction for high tensile and proof-load strength
• Zinc yellow dichromate finish provides corrosion and oxidation resistance
• 1/4-28 UNF fine thread for superior vibration resistance and precise engagement
• Partially threaded shank maintains a smooth grip section for clearance-hole applications
• Meets ASME B18.2.1 and SAE J429 dimensional and material standards
• 7/16-inch hex drive compatible with standard wrenches and sockets

Compatibility

Designed as a standard inch-series UNF hex head cap screw compatible with any 1/4-28 tapped hole or standard hex nut per ASME B18.2.1 and SAE J429 specifications.

Installation Notes

Installation is performed by mechanical technicians, millwrights, or trade professionals using a 7/16-inch wrench or socket. Always confirm the mating thread is clean, undamaged, and the correct 1/4-28 UNF specification before installation. De-energize or lock out any equipment before fastening components on live systems. Do not substitute a coarse-thread nut or tapped hole for this fine-thread fastener, as thread form mismatch will damage both components.