Value Collection 40863 Button Cap Screw 8-32 5/8 in 50 Pack

Product Description

The VALUE COLLECTION 40863 is a button socket cap screw designed for applications requiring a low-profile fastening solution with reliable clamping strength. Sized at 8-32 with a 5/8-inch length under the head, this screw is fully threaded and driven by a 3/32-inch hex socket key. It is manufactured from alloy steel with a black oxide finish that provides mild corrosion resistance and reduces light reflection. The 8-32 UNC thread conforms to ANSI/ASME B18.3 and ASTM F835 standards, and the Thread Fit Class 3A designation ensures consistent dimensional tolerance for dependable installation in machined holes. Hardness is rated at 36-43 HRC. Each package contains 50 screws.

This fastener is suited for mechanical assemblies, equipment panels, fixtures, and light structural connections where a rounded, low-profile button head is preferred over a standard hex or flat head. The black oxide finish makes it a common choice in machine shops, maintenance environments, and industrial fabrication where a clean, dark appearance is desired. It is installed using a standard hex key or Allen driver and is appropriate for use in both new-build and repair contexts across general manufacturing and trade applications.

Key Features

• Button head profile keeps the fastener low-profile for flush or near-flush installations
• Fully threaded 8-32 UNC right-hand thread with Class 3A fit for precise dimensional compliance
• Alloy steel construction rated at 36-43 HRC for dependable mechanical strength
• Black oxide finish provides mild corrosion resistance and a uniform dark appearance
• 3/32-inch hex socket drive for use with standard Allen keys or hex bit drivers
• Conforms to ANSI/ASME B18.3 and ASTM F835 fastener standards
• Sold in a package of 50 screws

Compatibility

Designed as a standard 8-32 UNC button socket cap screw for use in threaded holes or with nuts conforming to ANSI/ASME B18.3 specifications in general mechanical and industrial assemblies.

Installation Notes

Installation requires a 3/32-inch hex key or compatible Allen bit driver. Ensure the mating threaded hole is clean and free of debris before driving the screw. Do not exceed recommended seating torque for the 8-32 thread size as specified in applicable engineering references. Power down or de-energize any equipment before performing fastener service on live assemblies.