Value Collection 43156 M8x1.25 Flat Socket Cap Screw 12.9

Product Description

The VALUE COLLECTION 43156 is a flat socket cap screw designed for applications where a low-profile, flush-mount fastener is required. Manufactured from 12.9-grade alloy steel with a black oxide finish, this screw delivers high tensile strength and basic corrosion resistance in a compact form factor. It features a 90-degree flat head driven by a 5 mm hex socket and is fully threaded along its 20 mm overall length with an M8x1.25 thread pitch. It is suited for precision mechanical assemblies, tooling fixtures, and structural joints where head protrusion must be minimized. Licensed tradespeople and experienced assemblers install this type of fastener in both industrial and field settings.

This flat socket cap screw is commonly used in mechanical, structural, and manufacturing applications where a countersunk, flush-mounted fastener is needed. The M8x1.25 metric thread and 12.9 material grade make it appropriate for high-load joints in machinery, automotive components, and fabricated metal assemblies. The black oxide finish provides a clean appearance and mild surface protection. This screw conforms to DIN 7991 fastener standards and uses metric thread standards throughout.

Key Features

• 12.9-grade alloy steel construction for high tensile and proof load capacity
• Black oxide finish for a clean appearance and mild corrosion resistance
• 90-degree flat head profile for flush or countersunk installation
• 5 mm hex socket drive for precise torque application
• Fully threaded along entire 20 mm length for maximum thread engagement
• Conforms to DIN 7991 fastener standard with metric thread standard

Compatibility

Designed as an OEM-style metric flat socket cap screw for use in countersunk M8 threaded holes conforming to DIN 7991 specifications in industrial, mechanical, and structural assemblies.

Installation Notes

Install using a 5 mm hex key or hex socket driver rated for high-strength fasteners. Ensure the mating hole is properly countersunk to 90 degrees before installation. Power down or de-energize any associated equipment before fastener service. Follow applicable torque specifications from the equipment manufacturer or relevant industry standards for 12.9-grade M8 fasteners.