Value Collection D30018 Hex Head Cap Screw 1/4-20 X 5 in

Product Description

The VALUE COLLECTION D30018 is a 1/4-20 partially threaded hex head cap screw machined to ASME B18.2.1 standards. With a 5-inch length under head and unified coarse (UNC) thread form, this fastener is built for structural bolted connections where a full-bearing hex head and partial thread engagement are required. The Grade 5 steel construction provides medium-strength performance suitable for general mechanical and structural assembly work. A zinc-plated finish adds corrosion resistance for use in moderately exposed environments. Licensed tradespeople and maintenance technicians across HVAC, plumbing, electrical, and general mechanical trades reach for this fastener in panel, bracket, and equipment mounting applications.

This screw is suited for residential and light commercial installations where a 1/4-20 UNC fastener with a 5-inch grip length is specified. Common applications include mounting structural brackets, equipment frames, and mechanical assemblies where partial threading is needed to clamp unthreaded material between the bearing face and a nut. The ASME B18.2.1 dimensional standard ensures interchangeability with OEM and aftermarket hardware across a wide range of equipment platforms.

Key Features

• 1/4-20 UNC thread size with 5-inch length under head for deep-grip applications
• Partially threaded shank allows clamping of unthreaded material without thread interference
• Grade 5 steel construction meets medium-strength fastener requirements
• Zinc-plated finish provides corrosion resistance in moderately exposed service conditions
• Manufactured to ASME B18.2.1 dimensional standards for consistent fit and interchangeability

Compatibility

Designed as a standard 1/4-20 UNC hex head cap screw for use in any application specifying an ASME B18.2.1-compliant partially threaded fastener in that thread size and length.

Installation Notes

Installation should be performed by a qualified mechanic or tradesperson following the applicable equipment manufacturer torque specifications. Always use the correct hex socket or wrench size for the 1/4-20 hex head to avoid rounding the drive surface. Ensure the mating nut or tapped hole is the same thread standard (UNC) before installation. Inspect threads for damage before installing into any load-bearing assembly.