Holo-krome 64020 Button Socket Cap Screw 8-32 1/2 in

Product Description

The HOLO-KROME 64020 is a button head socket cap screw designed for applications requiring a low-profile fastening solution with high tensile strength. This fully threaded fastener features an 8-32 UNC thread and measures 1/2 inch in length under the head. Driven by a 3/32 inch hex socket, it is manufactured from alloy steel and finished in black oxide for corrosion resistance in moderate environments. The 3A thread fit class ensures precise engagement with mating threads. With a hardness rating of 38 HRC, this screw is suited for demanding mechanical assemblies where strength and a flush, low-profile head are required.

This screw is commonly used in machine assembly, fixture building, tooling, and light structural applications where a conventional hex cap screw head would interfere with mating components. The button head profile distributes clamping load over a wider bearing surface compared to a flat or pan head. It is a standard choice for mechanical designers and maintenance technicians working with close-tolerance assemblies in industrial, HVAC equipment panels, and electrical enclosure applications. Sold individually per package, with a minimum order quantity of 100 pieces.

Key Features

• Button head profile provides low-profile fastening with a 0.312 inch head diameter and 0.087 inch head height
• Alloy steel construction with 38 HRC hardness for high-strength fastening
• Black oxide finish for moderate corrosion resistance and reduced light reflection
• 3/32 inch hex socket drive for standard L-key or bit driver installation
• Fully threaded 8-32 UNC right-hand thread with 3A fit class for precise thread engagement
• Meets ANSI/ASME B18.3 and ASTM F835 fastener standards

Compatibility

Designed as an OEM-style replacement or standard-fit fastener for any application requiring an 8-32 UNC button socket cap screw conforming to ANSI/ASME B18.3 and ASTM F835 specifications.

Installation Notes

Installation requires a 3/32 inch hex key or socket bit driver. Power down or de-energize any equipment before accessing fastener locations inside electrical enclosures or control panels. Follow applicable ANSI torque guidelines for the 8-32 thread size and alloy steel grade. Do not substitute a mismatched drive size, as rounding the socket drive will require extraction and replacement of the fastener.