Holo-krome 87004 Flat Socket Cap Screw M3x0.5 Alloy Steel

Product Description

The HOLO-KROME 87004 is a metric flat socket cap screw engineered for applications requiring a flush or countersunk fastener profile. It features a 90-degree flat head driven by a 2 mm hex socket and is manufactured from 12.9 grade alloy steel with a black oxide finish. At M3x0.5 thread size and 8 mm overall length, this screw delivers high tensile strength in a compact form factor. The black oxide finish provides moderate corrosion resistance and reduces light reflection in precision assemblies. Licensed tradespeople, machinists, and mechanical assembly technicians install this fastener in tight-clearance and flush-mount applications where standard cap screws would protrude above the mating surface.

This screw is suited for use in precision mechanical assemblies, tooling fixtures, machine components, and industrial equipment where a countersunk fastener is required. The metric M3x0.5 thread pattern and 12.9 material grade make it appropriate for high-stress, low-profile fastening in both OEM manufacturing and maintenance-and-repair environments. Its small diameter and flush seating profile are commonly used in robotics, automation hardware, and precision instruments where head clearance is critical.

Key Features

• 90-degree flat head seats flush in standard countersunk holes, eliminating protrusion above the mating surface
• 12.9 alloy steel grade provides high tensile and proof load strength for demanding mechanical applications
• 2 mm hex socket drive for precise torque application with standard hex keys or socket drivers
• Black oxide finish reduces surface reflectivity and offers light rust inhibition in dry or lightly oiled environments
• Conforms to ANSI B1.13M and ISO 10642 fastener standards for dimensional consistency
• Thread fit class 4G ensures reliable engagement with standard metric tapped holes

Compatibility

Designed as an OEM-style and replacement metric flat socket cap screw for use in standard M3x0.5 countersunk threaded applications conforming to ISO 10642 and ANSI B1.13M dimensional requirements.

Installation Notes

Installation should be performed by a qualified machinist or mechanical technician familiar with metric fastener specifications and torque requirements. Always ensure the mating countersink angle matches the 90-degree head geometry before driving the fastener. De-energize or power down any equipment before servicing fastened assemblies. Use a properly sized 2 mm hex key or driver to avoid rounding the socket drive recess.