Value Collection 40869 Button Socket Cap Screw 1/4-28

Product Description

The VALUE COLLECTION 40869 is a button socket cap screw designed for applications requiring a low-profile head and a secure, high-strength fastening solution. Featuring a 1/4-28 UNF thread and a 3/8-inch length under head, this fully threaded fastener is manufactured from alloy steel with a black oxide finish for corrosion resistance. It is driven with a 5/32-inch hex socket and conforms to ANSI/ASME B18.3 and ASTM F835 standards. With a hardness rating of 36-43 HRC, it delivers the mechanical strength required in demanding industrial and mechanical assembly environments. Sold in a package quantity of 50.

This screw is suited for machine assembly, mechanical enclosures, precision equipment, and other applications where a flush or low-profile head is needed to clear adjacent components. The fine thread UNF designation makes it appropriate for use in tapped holes requiring closer tolerances and higher thread engagement, common in metalworking and light industrial assembly. Installers working in HVAC equipment frames, electrical enclosures, and pump or motor assemblies will find this fastener a practical fit.

Key Features

• Button head profile provides a low-profile, rounded appearance with wide bearing surface
• 1/4-28 UNF fully threaded with 3A thread fit class for precise thread engagement
• Alloy steel construction with 36-43 HRC hardness for high tensile strength
• Black oxide finish adds mild corrosion resistance and reduces light reflection
• 5/32-inch hex socket drive for standard hex key or socket bit installation
• Meets ANSI/ASME B18.3 and ASTM F835 fastener standards

Compatibility

Designed as a standard UNF button socket cap screw suitable for use in any application requiring a 1/4-28 threaded fastener with a button head and hex socket drive conforming to ANSI/ASME B18.3.

Installation Notes

Installation is performed with a 5/32-inch hex key or matching socket bit driver. Ensure the mating tapped hole is clean and free of debris before threading. Power down or de-energize any equipment before accessing fastener locations on electrical or mechanical assemblies. Do not exceed the rated hardness class by substituting lower-grade fasteners in load-bearing applications.