Holo-krome 65024 Button Socket Cap Screw 1/4-28

Product Description

The HOLO-KROME 65024 is a button head socket cap screw designed for applications requiring a low-profile fastening solution with high tensile strength. Manufactured from alloy steel with a black oxide finish, this screw offers corrosion resistance and a clean appearance suited to precision assemblies. It features a 1/4-28 UNF thread form, a 1-inch length under head, and a 5/32-inch hex socket drive. The thread fit class is 3A, indicating a standard external thread tolerance for general-purpose close-fit applications. Hardness is rated at 38 HRC, supporting high-load fastening in metal fabrication, machinery, and mechanical equipment. Installation requires a 5/32-inch hex key or hex socket driver.

This button socket cap screw is suited to residential and commercial mechanical assemblies, jigs, fixtures, machine guards, and enclosures where a flush or recessed fastener profile is preferred over a standard hex cap or pan head. The low-profile domed button head distributes clamp load over a wider bearing surface than a flat-head screw, making it appropriate for thin-wall or soft-material clamping. Technicians working in HVAC equipment assembly, electrical panel fabrication, or general mechanical maintenance will find this fastener compatible with standard 1/4-28 tapped holes.

Key Features

• 1/4-28 UNF right-hand thread with 3A fit class for precise thread engagement
• Alloy steel construction rated at 38 HRC hardness for high-load applications
• Black oxide finish provides mild corrosion resistance and reduced light reflection
• Low-profile button head measures 0.437 inches in diameter and 0.132 inches in height
• 5/32-inch hex socket drive for use with standard hex keys or socket drivers
• Fully threaded along the 1-inch under-head length for maximum thread engagement

Compatibility

Designed as a direct replacement or standard-fit fastener for any application calling for a 1/4-28 UNF thread, button head socket cap screw per ANSI/ASME B18.3 and ASTM F835 standards.

Installation Notes

Installation should be performed by a qualified mechanic or technician familiar with fastener torque specifications appropriate to the joint material and thread class. Use a properly sized 5/32-inch hex key or driver to avoid rounding the socket. Ensure mating tapped holes are clean and free of debris before driving. Do not exceed the rated hardness load limits for the base material being fastened.