Holo-krome 87156 Flat Socket Cap Screw M10x1.5 25mm

Product Description

The HOLO-KROME 87156 is a metric flat socket cap screw designed for flush or countersunk fastening applications where a low-profile head is required. Built from 12.9 grade alloy steel with a black oxide finish, this screw delivers high tensile strength and moderate corrosion resistance. The 90-degree flat head seats flush against the workpiece, and the 6 mm hex socket drive allows precise torque application with a standard hex key. At M10x1.5 thread size and 25 mm overall length with full threading, this fastener is suited for demanding mechanical assemblies where clamping force and head clearance both matter.

This screw is used in industrial machinery, tooling fixtures, structural assemblies, and precision mechanical components where a countersunk fastener with high-strength alloy steel construction is specified. The black oxide finish provides mild corrosion protection suitable for indoor or controlled-environment applications. Licensed mechanical contractors, industrial maintenance technicians, and OEM assembly operations are the typical installers. Thread fit class 4G ensures consistent engagement in metric-tapped holes machined to ISO standards.

Key Features

• 12.9 grade alloy steel construction for high tensile and yield strength
• 90-degree flat head profile seats flush in countersunk holes
• 6 mm hex socket drive for standard hex key or bit installation
• Black oxide finish provides mild corrosion and wear resistance
• Fully threaded along the entire 25 mm length for maximum thread engagement
• Conforms to ANSI B1.13M and ISO 10642 fastener standards

Compatibility

Designed as a standard metric replacement or OEM-spec flat socket cap screw for applications calling out M10x1.5 countersunk fasteners per ISO 10642 or ANSI B1.13M in 12.9 alloy steel.

Installation Notes

Installation is performed with a 6 mm hex key or hex bit driver. Ensure the mating hole is properly countersunk to a 90-degree included angle before installation. Power down or de-energize any equipment before servicing fastened assemblies. Do not substitute a lower-grade fastener in applications where 12.9 grade is specified, as doing so may compromise joint integrity.