Holo-krome 86001 Button Socket Cap Screw M3x0.5 8mm

Product Description

The HOLO-KROME 86001 is a metric button socket cap screw designed for fastening applications that require a low-profile head with high tensile strength. It features an M3x0.5 thread size, an 8mm length under head, and a 2mm hex socket drive. Manufactured from Grade 12.9 alloy steel with a black oxide finish, this screw delivers high hardness at 38 HRC and corrosion resistance suitable for industrial and mechanical assemblies. The button head profile distributes clamping load across a wider bearing surface compared to a standard socket head cap screw. Licensed trade professionals and assembly technicians install these in precision mechanical, hydraulic, and structural applications.

This screw is suited for metric fastening in tight-clearance assemblies where a low-profile button head is required. The black oxide finish provides mild corrosion resistance and reduces light reflection, making it appropriate for tooling fixtures, machinery guards, brackets, and enclosures. The fully threaded shank and right-hand thread direction are standard for general metric assembly work. It conforms to ANSI/ASME B18.3 and ASTM F835 standards, making it appropriate for use in regulated industrial and mechanical environments.

Key Features

• M3x0.5 thread with 8mm length under head for low-profile fastening
• Grade 12.9 alloy steel construction rated at 38 HRC hardness
• Black oxide finish for mild corrosion resistance and reduced reflectivity
• 2mm hex socket drive for precise torque application with standard hex keys
• Fully threaded shank with right-hand thread direction
• Conforms to ANSI/ASME B18.3 and ASTM F835 fastener standards

Compatibility

Designed as an OEM-style metric button socket cap screw for use in applications conforming to ANSI/ASME B18.3 and ASTM F835 standards with M3x0.5 thread engagement.

Installation Notes

Installation requires a 2mm hex key or hex socket driver. Power down or de-energize any equipment before fastening or removing hardware in live assemblies. Follow applicable torque guidelines from the equipment manufacturer or relevant ASME standards for Grade 12.9 fasteners. Do not substitute a lower-grade fastener in applications specified for Grade 12.9.