Value Collection MSCI02500500-100BX 1/4-20 X 1/2 in Fillister Screw

Product Description

The Value Collection MSCI02500500-100BX is a 1/4-20 x 1/2 inch fillister head machine screw designed for general fastening applications in metal, wood, and composite assemblies. The fillister head profile offers a taller-than-standard head with a deep slotted drive recess, providing positive driver engagement and reliable torque transfer. Manufactured from Grade 2 steel with a zinc-plated finish, this screw delivers basic corrosion resistance suitable for indoor and light-duty applications. These screws ship in a box of 100 units, making them practical for service vans, shop stock, and job-site kits.

This machine screw is suited for HVAC panel assembly, electrical enclosure mounting, plumbing fixture hardware, and general mechanical fastening where a 1/4-20 UNC thread form is specified. The slotted drive is compatible with standard flat-blade screwdrivers and slotted bits. Length is measured under the head at 1/2 inch, following standard inch-series fastener convention. These screws are appropriate for light-duty structural and non-structural connections in residential and light commercial trade work.

Key Features

• 1/4-20 UNC thread form for broad compatibility with standard tapped holes and nuts
• Fillister head profile provides a deep slotted recess for positive driver engagement
• Grade 2 steel construction for reliable strength in general-duty applications
• Zinc-plated finish offers basic corrosion protection for indoor environments
• 1/2 inch length measured under head for accurate installation depth planning
• Box of 100 units supports bench stock and field service inventory

Compatibility

Designed as a standard inch-series machine screw for use in any application specifying a 1/4-20 UNC thread, fillister head, and slotted drive in Grade 2 steel.

Installation Notes

Install using a flat-blade screwdriver or slotted bit sized to fit the head recess without slipping. De-energize and lock out any electrical or mechanical system before accessing fastener locations on live equipment. Do not use zinc-plated fasteners in outdoor or high-moisture environments where corrosion resistance requirements exceed a basic zinc coating. Ensure mating threads are clean and free of debris before driving to avoid cross-threading.