Holo-krome 87188 Flat Socket Cap Screw M12x1.75 12.9

Product Description

The HOLO-KROME 87188 is a metric flat socket cap screw designed for applications requiring a flush or countersunk fastener profile. It features a 90-degree flat head driven by an 8 mm hex socket and is fully threaded along its 30 mm overall length. The screw is manufactured from 12.9 grade alloy steel, placing it among the highest strength class available for metric fasteners. A black oxide finish provides mild corrosion resistance and reduces surface reflectivity. Thread size is M12x1.75 with a 4G thread fit class, conforming to ANSI B1.13M and ISO 10642 standards. Licensed trades and industrial maintenance technicians reach for this fastener when load-bearing flush mounting is required.

This screw is suited for mechanical assemblies, machine frames, tooling fixtures, and structural joints where a protruding head is not acceptable. The fully threaded shank allows engagement throughout the entire fastener length, making it effective in thinner material applications and blind-hole configurations. Its high-strength 12.9 rating makes it appropriate for high-stress joints in manufacturing equipment, heavy machinery, and precision assemblies where standard-grade fasteners would be insufficient.

Key Features

• 90-degree flat head profile for countersunk, flush-mount installations
• 12.9 alloy steel material grade for high-strength fastening applications
• Fully threaded along entire 30 mm length for maximum thread engagement
• 8 mm hex socket drive for reliable torque transmission
• Black oxide finish for mild corrosion resistance and low-reflectivity surface
• Conforms to ANSI B1.13M and ISO 10642 fastener standards

Compatibility

Designed for use in metric threaded applications requiring an M12x1.75 countersunk socket cap screw conforming to ISO 10642 and ANSI B1.13M standards.

Installation Notes

Installation should be performed by a qualified mechanic or maintenance technician using a calibrated 8 mm hex key or socket driver. Ensure the receiving hole is properly countersunk to a 90-degree angle to achieve full head seating. De-energize and lock out any equipment before fastener removal or installation on live machinery. Do not substitute a lower-grade fastener in joints engineered for 12.9 class hardware.