Holo-krome 86023 Button Cap Screw M5x0.80 25mm Grade 12.9

Product Description

The HOLO-KROME 86023 is a metric button socket cap screw designed for high-strength fastening applications across mechanical assemblies, fixtures, and machine structures. It features an M5x0.80 thread and a 25mm length under head, with a low-profile button head that suits flush or near-flush mounting requirements. The screw is manufactured from Grade 12.9 alloy steel with a black oxide finish, giving it a hardness of 38 HRC. Installation requires a 3mm hex socket driver. This fastener meets ANSI/ASME B18.3 and ASTM F835 standards, making it suitable for precision and structural fastening work performed by machinists, millwrights, and maintenance technicians.

This screw is used in applications where a low-profile head is required and tensile strength is critical. The Grade 12.9 rating places it among the highest-strength metric fastener grades, appropriate for hydraulic components, machine tool assemblies, jig and fixture construction, and equipment frames. The right-hand thread and metric sizing make it compatible with standard metric tapped holes in industrial and OEM manufacturing environments. Thread fit classes 4G and 6G provide options for both close-tolerance and general-purpose fits.

Key Features

• Grade 12.9 alloy steel construction with 38 HRC hardness for high-load fastening
• Low-profile button head with 9.5mm head diameter and 2.75mm head height
• 3mm hex socket drive for positive torque transfer
• Black oxide finish for mild corrosion resistance and reduced light reflection
• Meets ANSI/ASME B18.3 and ASTM F835 standards
• Right-hand thread, fully threaded, metric M5x0.80 specification

Compatibility

Designed as a direct-fit metric fastener for M5x0.80 threaded holes in machine assemblies, fixtures, and equipment requiring a button head profile. Thread fit classes 4G and 6G cover close-tolerance and general-purpose metric applications.

Installation Notes

Installation is performed using a 3mm hex socket key or driver. Confirm the mating thread is M5x0.80 metric before installation. Avoid mixing metric and unified inch fasteners in the same assembly. Follow applicable torque specifications from ANSI/ASME B18.3 or the equipment manufacturer for Grade 12.9 fasteners, and do not reuse fasteners that show signs of yielding or thread damage.