Value Collection SBFI02502500-050BX Machine Screw 1/4-20

Product Description

The VALUE COLLECTION SBFI02502500-050BX is a 1/4-20 x 2-1/2 inch flat head slotted machine screw manufactured from Grade 2 steel with a zinc-plated finish. Designed to the Unified National Coarse (UNC) thread standard, this fastener features a countersunk flat head profile and a single slotted drive. The zinc plating provides a basic level of corrosion resistance for general-purpose indoor and light-duty applications. Overall length is 2-1/2 inches, and length under head is also 2-1/2 inches. This package contains a minimum order quantity of 50 pieces. Licensed tradespeople and maintenance professionals rely on this screw type for everyday mechanical assembly, panel mounting, and equipment fabrication tasks.

This machine screw is suited for general mechanical and structural assembly applications across residential, commercial, and light industrial environments. The 1/4-20 UNC thread is one of the most common coarse-thread fastener sizes in North American trade work, making it a standard choice for HVAC equipment panels, electrical enclosures, plumbing fixture brackets, and general sheet metal or fabrication work. Installers typically use this fastener with a standard flat or countersunk clearance hole to achieve a flush surface finish. Sold in boxes of 50, this screw is appropriate for both service-call restocking and small-scale production use.

Key Features

• 1/4-20 UNC coarse thread for broad compatibility with standard tapped holes and hardware
• Flat countersunk head profile allows flush or below-surface seating
• Slotted drive accepts standard flat-blade screwdrivers and bits
• Grade 2 steel construction meets general-purpose mechanical fastener requirements
• Zinc-plated finish provides basic corrosion resistance for indoor and light-duty use
• Overall and under-head length of 2-1/2 inches suits medium-depth fastening applications

Compatibility

Designed as a standard 1/4-20 UNC flat head slotted machine screw for use in any application requiring a countersunk fastener with coarse inch-standard threading. Compatible with standard 1/4-20 tapped holes, threaded inserts, and hex nuts across mechanical, electrical, and HVAC assemblies.

Installation Notes

Installation requires a flat-blade screwdriver or slotted bit of appropriate size. Ensure the mating material has a properly tapped 1/4-20 UNC thread or use a matching nut and washer as needed. For electrical enclosures or equipment panels, de-energize all circuits before fastener work in accordance with NFPA 70E lockout/tagout procedures. Do not overtighten into soft base materials such as aluminum or plastic without appropriate thread inserts.