Holo-krome 87088 Flat Socket Cap Screw M6x1 12.9

Product Description

The HOLO-KROME 87088 is a metric flat socket cap screw engineered for applications where a flush or countersunk fastener profile is required. It features a 90-degree flat head driven by a 4 mm hex socket and is manufactured from 12.9 grade alloy steel with a black oxide finish. The M6x1 thread is fully threaded along its 12 mm overall length, conforming to ANSI B1.13M and ISO 10642 standards. With a thread fit class of 4G and a head diameter of 13.44 mm, this screw delivers high tensile strength in a low-profile installation. Mechanical contractors, millwrights, and OEM assembly technicians are the primary installers.

This fastener suits precision mechanical assemblies, machine frames, industrial equipment, and fixtures where a countersunk seating surface keeps the fastener head flush with or below the mating surface. The black oxide finish provides moderate corrosion resistance and reduces light reflection in low-clearance or aesthetic-sensitive assemblies. It is appropriate for metal-to-metal fastening in both production and maintenance environments that specify metric hardware to ISO or ANSI standards.

Key Features

• 90-degree flat head profile seats flush in countersunk holes per ISO 10642
• 12.9 alloy steel grade delivers high tensile and proof load strength
• 4 mm hex socket drive for use with standard metric Allen keys or socket drivers
• Fully threaded along the 12 mm overall length for maximum thread engagement
• Black oxide finish for reduced corrosion susceptibility and low surface reflectivity
• Thread fit class 4G per ANSI B1.13M for consistent metric tolerance compliance

Compatibility

Designed as an OEM-style metric flat socket cap screw for use in countersunk applications requiring M6x1 thread size and conformance to ANSI B1.13M and ISO 10642 fastener standards.

Installation Notes

Installation should be performed by a qualified mechanic or assembly technician familiar with metric fastener specifications. Ensure the mating countersink is machined to the correct 90-degree included angle before driving the screw. Use a calibrated torque wrench with the correct 4 mm hex bit to reach the target clamp load without stripping the drive socket. Do not mix metric and unified inch fasteners in the same tapped hole.