Holo-krome 64064 Button Socket Cap Screw 3/8-16 1/2 Inch

Product Description

The HOLO-KROME 64064 is a button socket cap screw designed for fastening applications that require a low-profile head and high strength. It features a 3/8-16 UNC thread with a 7/32 inch hex socket drive and measures 1/2 inch in length under the head. Manufactured from alloy steel with a black oxide finish, it meets ANSI/ASME B18.3 and ASTM F835 standards. The fully threaded shank and Class 3A thread fit deliver tight tolerances and reliable clamp load. Hardness is rated at 38 HRC, making this fastener suitable for demanding mechanical assemblies.

This button socket cap screw is used in general mechanical, industrial, and equipment assembly applications where a rounded, low-profile head is needed to clear adjacent components or reduce snag points. The right-hand thread and hex socket drive make it compatible with standard Allen wrenches and socket sets. It is commonly installed by machinists, millwrights, and maintenance technicians in fabrication shops, production equipment, and structural assemblies requiring a clean, flush-mount appearance.

Key Features

• 3/8-16 UNC fully threaded shank with Class 3A thread fit for precise engagement
• Button head profile at 0.656 inches diameter and 0.199 inches height for low-profile installations
• 7/32 inch hex socket drive compatible with standard Allen keys and hex bit drivers
• Alloy steel construction rated at 38 HRC hardness for high-strength fastening
• Black oxide finish provides mild corrosion resistance and reduces light reflection
• Meets ANSI/ASME B18.3 and ASTM F835 fastener standards

Compatibility

Designed as an OEM-style replacement or direct-fit fastener for mechanical assemblies requiring a 3/8-16 UNC button socket cap screw per ANSI/ASME B18.3 and ASTM F835 specifications.

Installation Notes

Installation is typically performed by machinists or maintenance technicians using a 7/32 inch hex key or socket bit driver. Ensure the mating threaded hole is clean and free of debris before driving the fastener. Do not exceed the torque capacity appropriate for the application and material being fastened. Black oxide finish is not a heavy-duty corrosion barrier; evaluate finish suitability for wet or outdoor environments before use.