Holo-krome 87036 M4x0.7 Flat Socket Cap Screw 12.9 Alloy Steel

Product Description

The HOLO-KROME 87036 is a metric flat socket cap screw designed for applications where a flush or countersunk fastener profile is required. Built from grade 12.9 alloy steel with a black oxide finish, this screw delivers high tensile strength and moderate corrosion resistance in a compact, low-profile head. The 90-degree flat head seats flush with or below the surface of the workpiece, driven by a 2.55 mm hex socket. It carries an M4x0.7 thread with a 4G thread fit class and conforms to ANSI B1.13M and ISO 10642 fastener standards. Machinists, industrial maintenance technicians, and mechanical assemblers commonly install this fastener in precision equipment, fixtures, and assemblies.

The 87036 is suited for metric fastening applications in machinery, tooling, jigs, and equipment panels where a countersunk seat is required and high clamping force is critical. The grade 12.9 material grade indicates an extremely high-strength fastener appropriate for demanding mechanical assemblies. The black oxide finish provides a clean appearance and mild corrosion protection in indoor or low-moisture environments. Overall length is 16 mm, making it appropriate for moderate material thicknesses in both light and heavy fabrication contexts.

Key Features

• Grade 12.9 alloy steel for high tensile and proof load strength
• 90-degree flat head seats flush in countersunk holes per ISO 10642
• 2.55 mm hex socket drive for precise torque application
• Black oxide finish for a clean appearance with mild corrosion resistance
• M4x0.7 thread with 4G fit class for consistent metric thread engagement
• Conforms to ANSI B1.13M and ISO 10642 fastener standards

Compatibility

Designed as a metric flat socket cap screw replacement or new-installation fastener conforming to ISO 10642 and ANSI B1.13M, suitable for standard M4x0.7 countersunk socket screw applications.

Installation Notes

Install using a calibrated 2.55 mm hex key or socket driver. Verify the receiving hole is properly countersunk to a 90-degree seat angle before installation. Power down or de-energize any equipment before servicing fasteners in live assemblies. Do not mix metric and inch-series fasteners or substitute lower-grade hardware in high-load applications.