Holo-krome 64030 Button Socket Cap Screw 10-24 1/2 in

Product Description

The HOLO-KROME 64030 is a 10-24 button socket cap screw designed for applications requiring a low-profile head and secure hex socket drive. Made from alloy steel with a black oxide finish, it delivers corrosion resistance and hardness rated at 38 HRC. The 1/2-inch length under head and fully threaded shank make it well suited for fastening thin materials or assemblies where flush clearance is critical. Driven with a 1/8-inch hex key, it follows ANSI/ASME B18.3 and ASTM F835 standards. Machinists, millwrights, and mechanical contractors install these in machine assemblies, enclosures, and structural brackets.

This screw is used across general mechanical assembly, industrial equipment, and fabrication work where a button-head profile reduces snag risk compared to a standard socket head. The 10-24 UNC thread with a 3A fit class ensures a consistent, well-toleranced engagement in tapped holes. It is fully threaded, so it provides consistent clamp load throughout the shank. Common in both light manufacturing and field repair work, this fastener suits applications where a hex socket drive is preferred over slotted or Phillips drive for torque control and tool retention.

Key Features

• Button head profile keeps a low, snag-resistant silhouette in assembled components
• Alloy steel construction with 38 HRC hardness for reliable strength in mechanical assemblies
• Black oxide finish provides mild corrosion resistance and a clean, matte appearance
• 1/8-inch hex socket drive allows controlled torque with standard hex keys or hex-bit drivers
• Fully threaded shank on 1/2-inch length under head ensures full thread engagement across thin stock
• Meets ANSI/ASME B18.3 and ASTM F835 for dimensional and mechanical compliance

Compatibility

Designed as a standard 10-24 UNC button socket cap screw suitable for tapped holes conforming to UNRC thread standards with a 3A fit class tolerance.

Installation Notes

Installation is performed by machinists, assemblers, or mechanical contractors using a 1/8-inch hex key or hex-bit driver. Ensure the tapped hole is clean and free of debris before threading to avoid cross-threading or galling the alloy steel. Follow ANSI/ASME B18.3 guidelines for proper seating torque for 10-24 fasteners. Do not use an impact driver without a torque-limiting attachment, as button head screws have lower drive-recess engagement depth than full hex socket heads.