Value Collection MPA98163 Flat Head Machine Screw 1/4-20

Product Description

The VALUE COLLECTION MPA98163 is a 1/4-20 UNC flat head machine screw designed for general-purpose fastening in trade and industrial applications. Measuring 1 inch in overall length, it features a Pin In Torx drive that resists tampering and cam-out during installation. The screw is machined from 18-8 stainless steel with a bright, uncoated finish, giving it solid corrosion resistance in wet or outdoor environments. This fastener is suited for use by electricians, plumbers, HVAC technicians, and general contractors who need a reliable stainless fastener in a standard UNC thread pattern.

This screw is commonly used in equipment panels, junction boxes, access covers, brackets, and structural assemblies where a flush-seating flat head profile is required. The 1/4-20 UNC thread is one of the most widely used coarse-thread standards in inch-system mechanical work, making this fastener broadly applicable across residential and light commercial installations. The Pin In Torx drive adds a tamper-resistant element useful in equipment enclosures and utility access points.

Key Features

• 1/4-20 UNC coarse thread for broad compatibility with standard tapped holes and nuts
• Flat head profile seats flush with or below the surface of the mating material
• Pin In Torx drive resists cam-out and provides tamper resistance
• 18-8 stainless steel construction offers corrosion resistance in damp or outdoor conditions
• Bright, uncoated finish - no plating to chip or flake in the thread engagement zone
• 1 inch overall length suits medium-depth fastening applications

Compatibility

Designed as a standard inch-system replacement or installation fastener for any application requiring a 1/4-20 UNC flat head machine screw with Pin In Torx drive.

Installation Notes

Installation requires a Pin In Torx driver bit matched to the screw size - standard Torx bits will not engage the center pin. Flat head screws require a countersunk hole to seat flush; verify the countersink angle of the mating material before driving. As with all stainless fasteners, apply appropriate anti-seize compound when threading into stainless or aluminum tapped holes to prevent galling. Follow applicable mechanical and electrical codes when using fasteners in code-governed assemblies.