Value Collection 586616PS 1/4-28 X 1/2 Flat Head Phillips Screw

Product Description

The VALUE COLLECTION 586616PS is a 1/4-28 unified fine thread flat head machine screw with a Phillips drive. It measures 1/2 inch in overall length and features a countersunk flat head profile designed to sit flush with or below the surface of the mating material. Manufactured from steel with a zinc finish for basic corrosion resistance, this fastener meets ASME B18.6.3 and SAE J82 standards. It is suited for general mechanical assembly work in light industrial, HVAC panel, electrical enclosure, and equipment maintenance applications where a flush-mount fastener is required.

This screw is appropriate for use in metal-to-metal and metal-to-substrate assemblies requiring a fine-thread 1/4-28 fastener. The flat head countersunk profile makes it a common choice when fastening access panels, brackets, and covers in HVAC equipment, electrical enclosures, and similar trade assemblies. Sold per package of 1, with a minimum order quantity of 50 units. The zinc finish provides light protection suitable for indoor and sheltered installations.

Key Features

• 1/4-28 unified fine thread for secure engagement in tapped metal
• Flat countersunk head seats flush with the work surface
• Phillips drive for compatibility with standard screwdrivers and power tools
• Steel construction with zinc finish for light corrosion resistance
• Meets ASME B18.6.3 and SAE J82 fastener standards
• Overall and under-head length both 1/2 inch for consistent fitment

Compatibility

Designed as a standard 1/4-28 fine thread flat head machine screw suitable for tapped holes conforming to ASME B18.6.3 specifications in metal panels, brackets, and enclosures.

Installation Notes

Installation is performed by any trade technician as part of general mechanical assembly or equipment service. Verify the mating hole is properly tapped or threaded to 1/4-28 UNF before installation. Use a correctly sized Phillips screwdriver or bit to avoid cam-out and head damage. Do not overtighten into thin sheet metal, as fine threads can strip under excessive torque.