Value Collection SBFI02500500-100BX 1/4-20 X 1/2 in Flat Slotted Screw

Product Description

The VALUE COLLECTION SBFI02500500-100BX is a 1/4-20 x 1/2 inch flat head slotted machine screw designed for general-purpose fastening in metal, wood, and composite assemblies. Made from Grade 2 steel with a zinc-plated finish, this screw provides moderate corrosion resistance suitable for indoor and light-duty applications. The flat head profile sits flush with or below the mating surface when countersunk, making it a standard choice for panels, enclosures, brackets, and equipment housings. This box contains 100 screws. Electricians, HVAC technicians, plumbers, and general contractors reach for this fastener type in a wide range of service and installation tasks.

This machine screw is suited for residential and light commercial applications where a flush-mount fastener is required. The 1/4-20 Unified National Coarse (UNC) thread is one of the most common thread forms in North American trade work, compatible with standard 1/4-20 tapped holes and nuts. Typical uses include securing electrical enclosure covers, mounting brackets, equipment panels, and structural components in HVAC and plumbing assemblies. The zinc plating provides a clean appearance and mild protection against oxidation in dry or low-humidity environments.

Key Features

• Flat head profile countersinks flush for clean, low-profile installations
• 1/4-20 UNC thread — one of the most widely used coarse thread sizes in North American trade applications
• Grade 2 steel construction provides adequate tensile strength for light to moderate fastening loads
• Zinc-plated finish offers mild corrosion resistance and a consistent appearance
• Overall length and length under head both measure 1/2 inch for straightforward sizing
• Box of 100 screws supports job-site and shop stocking needs

Compatibility

Designed as a standard 1/4-20 UNC flat head slotted machine screw suitable for use with any 1/4-20 tapped hole, threaded insert, or mating nut in inch-measurement assemblies.

Installation Notes

Install using a flat-blade screwdriver sized to the slotted drive to avoid cam-out and head damage. Countersink the mating material to the appropriate angle before driving to achieve a flush seating surface. Do not exceed the tensile limits of Grade 2 steel by overtorquing in high-stress or vibration-heavy applications — consider a higher-grade fastener if loading demands it. Follow applicable codes such as the NEC or IFGC when fastening electrical or gas-related enclosures and equipment.