Value Collection MP30185 Hex Cap Screw 1/4-28 X 2-1/2 in Grade 5

Product Description

The VALUE COLLECTION MP30185 is a partially threaded hex head cap screw designed for general mechanical fastening in trade and industrial applications. Manufactured from Grade 5 steel with a zinc-plated finish, this fastener delivers reliable clamping strength and basic corrosion resistance for interior and light exterior use. The 1/4-28 UNF thread profile provides fine-thread engagement, which is preferred in applications requiring higher thread strength or vibration resistance compared to coarse-thread equivalents. At 2.5 inches length under head, the screw accommodates moderate stack thicknesses. Each package contains 25 pieces.

This fastener is suited for residential and light commercial mechanical assemblies, HVAC equipment panels, electrical enclosures, plumbing fixture brackets, and general equipment fabrication. The fine thread (UNF) configuration is commonly specified in metal-to-metal joints and tapped holes in harder materials where coarse threads would strip. Installers typically use these in situations requiring controlled torque and tight joint tolerances. The zinc coating provides a base level of protection against oxidation in dry or mildly humid environments.

Key Features

• 1/4-28 UNF fine thread for higher tensile strength and vibration resistance versus coarse-thread equivalents
• Grade 5 steel construction meets medium-strength fastener requirements for mechanical assemblies
• Zinc-plated finish provides basic corrosion protection in dry and mildly humid environments
• Partially threaded shank allows for shear loading and proper clamping of unthreaded material layers
• Meets ASME B18.2.1 dimensional standards for hex head cap screws
• Sold in a 25-piece package to support job-site and shop quantities

Compatibility

Designed as an OEM-style replacement or standard-stock hex head cap screw for any application requiring a 1/4-28 UNF, 2.5-inch, Grade 5, zinc-plated partially threaded fastener conforming to ASME B18.2.1.

Installation Notes

Installation should be performed by a qualified technician following applicable mechanical codes and equipment manufacturer torque specifications. Always de-energize and lock out equipment before replacing or tightening fasteners on electrical or mechanical assemblies. Use a properly sized hex wrench or socket to avoid rounding the head. Do not exceed the torque rating of the base material tapped hole, particularly when threading into aluminum or softer substrates.