Holo-krome 64086 Button Socket Cap Screw 5/8-11

Product Description

The HOLO-KROME 64086 is a button socket cap screw designed for applications requiring a low-profile head with high clamping strength. It features a hex socket drive sized at 3/8 inches and a 5/8-11 UNC thread in a 3A fit class, making it suitable for precision fastening in steel and alloy assemblies. The black oxide finish provides moderate corrosion resistance and a clean, matte appearance. Manufactured from alloy steel with a hardness rating of 38 HRC, this screw delivers reliable tensile strength in demanding mechanical environments. It is fully threaded and right-hand drive. Licensed tradespeople and mechanical assemblers working in industrial, equipment, or structural applications will find this a dependable OEM-style fastener choice.

This button socket cap screw is commonly used in machinery, fixtures, enclosures, and structural assemblies where a rounded, low-profile head is preferred over a standard hex or flat cap screw. The button head reduces snagging and allows for flush or near-flush seating against mating surfaces. It is well suited for both light structural and non-structural clamping applications in industrial and commercial settings where alloy steel strength is required and space constraints limit the use of a taller fastener head.

Key Features

• 5/8-11 UNC thread with 3A fit class for precise, reliable engagement
• Hex socket drive, 3/8 inches, compatible with standard Allen keys and hex bit drivers
• Button head profile reduces protrusion and minimizes snagging in tight assemblies
• Alloy steel construction with 38 HRC hardness for high tensile strength
• Black oxide finish for moderate corrosion resistance and reduced light reflection
• Meets ANSI/ASME B18.3 and ASTM F835 fastener standards

Compatibility

Designed as an OEM-style replacement or direct-fit fastener for industrial and mechanical assemblies requiring a 5/8-11 UNC button socket cap screw conforming to ANSI/ASME B18.3 and ASTM F835 standards.

Installation Notes

Installation should be performed by a qualified mechanic or assembler using a properly sized 3/8-inch hex key or socket bit driver. Always ensure mating threads are clean and free of debris before installation. Apply appropriate thread lubricant or thread-locking compound as dictated by the application and relevant engineering specifications. Do not exceed the torque rating specified by the design authority for the assembly.