Value Collection MP40876 Button Cap Screw 1/4-20 5/8 in

Product Description

The VALUE COLLECTION MP40876 is a 1/4-20 button socket cap screw designed for fastening applications that require a low-profile head and secure hex socket drive engagement. Made from alloy steel with a black oxide finish, this fully threaded fastener measures 5/8 inches in length under the head and carries a hardness rating of 36-43 HRC. The button head style distributes clamping load across a wider bearing surface compared to a standard socket cap screw. This fastener conforms to ANSI/ASME B18.3 and ASTM F835 standards, making it a reliable choice for mechanical assemblies, fabrication work, and equipment maintenance tasks performed by machinists, millwrights, and field service technicians.

This screw is suited for use in general industrial, commercial, and trade applications where a flush or near-flush head profile is needed and a hex socket drive tool is available. The 1/4-20 UNC thread form is one of the most common coarse-thread sizes in North American fastener practice, making this screw compatible with a wide range of tapped holes and threaded inserts. The black oxide finish provides mild corrosion resistance and reduces surface reflectivity, which is useful in both exposed and enclosed assemblies. This item is packaged in a quantity of 50 per package.

Key Features

• Button head profile provides low-clearance installation in tight assemblies
• 5/32-inch hex socket drive for use with standard Allen or hex key tooling
• Alloy steel construction with 36-43 HRC hardness for high-strength fastening
• Black oxide finish for mild corrosion resistance and reduced reflectivity
• Fully threaded 1/4-20 UNC right-hand thread with Class 3A fit
• Meets ANSI/ASME B18.3 and ASTM F835 fastener standards

Compatibility

Designed as a standard 1/4-20 UNC button socket cap screw for use in any application requiring an ANSI/ASME B18.3-compliant fastener in a tapped 1/4-20 hole.

Installation Notes

Install using a 5/32-inch hex key or Allen driver; ensure the driver is fully seated in the socket before applying torque to avoid rounding the drive recess. Verify that the mating tapped hole or insert is clean and free of debris before threading. De-energize, depressurize, or otherwise make safe any equipment being serviced before removing or replacing fasteners. Follow applicable mechanical or structural codes for the specific assembly type.