Holo-krome 65030 Button Socket Cap Screw 5/16-24

Product Description

The HOLO-KROME 65030 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 features a 5/16-24 UNF thread and measures 5/8 inches in length under the head. The hex socket drive accepts a 3/16-inch hex key for installation. With a hardness rating of 38 HRC and a 3A thread fit class, the 65030 meets ANSI/ASME B18.3 and ASTM F835 standards. It is fully threaded with a right-hand thread direction, making it a reliable choice for precision mechanical assemblies across industrial and trade applications.

This button socket cap screw is suited for use in machinery, fixtures, and fabricated assemblies where a rounded, low-profile head is required to clear adjacent components or reduce snag hazards. The black oxide finish provides mild corrosion resistance and a uniform dark appearance. Licensed trades and industrial maintenance professionals commonly use this fastener when working within tight clearances or in applications where a standard hex head cap screw would interfere with surrounding hardware.

Key Features

• Button head profile reduces snag hazards and fits flush in low-clearance assemblies
• Alloy steel construction with 38 HRC hardness for high-strength fastening
• Black oxide finish for mild corrosion resistance and uniform appearance
• 3/16-inch hex socket drive for precise torque application
• Fully threaded 5/16-24 UNF right-hand thread, 3A fit class
• Meets ANSI/ASME B18.3 and ASTM F835 fastener standards

Compatibility

Designed as a standard UNF button socket cap screw compatible with 5/16-24 threaded holes in industrial machinery, fabricated assemblies, and mechanical fixtures requiring a low-profile alloy steel fastener.

Installation Notes

Installation is performed using a 3/16-inch hex key or allen driver. Ensure the mating threaded hole is clean and free of debris before driving the fastener. Apply thread locker or specified torque values per the equipment manufacturer's guidelines and applicable ANSI standards. Do not over-torque, as this may compromise thread integrity or head seating.