Holo-krome 86009 M4x0.70 Button Socket Cap Screw 10mm

Product Description

The HOLO-KROME 86009 is a metric button socket cap screw designed for applications requiring a low-profile head with high-strength fastening. Manufactured from Grade 12.9 alloy steel with a black oxide finish, this screw delivers a hardness of 38 HRC and resists corrosion in moderate service environments. The hex socket drive accepts a 2.55 mm hex key for installation in tight clearance areas. The button head style distributes clamping load over a broader bearing surface compared to standard socket head cap screws. Licensed trade professionals and industrial maintenance technicians use this fastener in precision mechanical assemblies, tooling fixtures, and equipment fabrication where a flush or near-flush head profile is required.

This fastener is suited for light to medium-duty mechanical assemblies in industrial, commercial, and OEM manufacturing settings. The M4x0.70 thread size and 10 mm length under head make it appropriate for securing thin panels, brackets, and machine guards. It conforms to ANSI/ASME B18.3 and ASTM F835 standards, making it compatible with engineering specifications that call out those fastener standards. The right-hand thread direction and 4G/6G thread fit class ensure controlled fit with standard metric tapped holes.

Key Features

• Grade 12.9 alloy steel construction with 38 HRC hardness for high-strength applications
• Black oxide finish provides moderate corrosion resistance and a low-glare appearance
• Button head profile offers low clearance height and broad bearing surface
• 2.55 mm hex socket drive for use with standard metric hex keys
• Conforms to ANSI/ASME B18.3 and ASTM F835 fastener standards
• Right-hand thread, 4G/6G fit class for use with standard metric tapped holes

Compatibility

Designed for use in standard metric M4x0.70 tapped holes per ANSI/ASME B18.3 and ASTM F835. Thread fit classes 4G and 6G provide compatibility with a range of metric threaded inserts and tapped bores in machined components.

Installation Notes

Install using a calibrated 2.55 mm hex key or hex bit driver. Ensure the mating tapped hole is clean and free of debris before threading. De-energize and lock out any equipment before fastener replacement or removal per applicable safety procedures. Black oxide fasteners are not rated for outdoor immersion or highly corrosive environments without additional protective coating.