Value Collection 43181 Flat Socket Cap Screw M12x1.75

Product Description

The VALUE COLLECTION 43181 is a metric flat socket cap screw designed for applications requiring a low-profile, flush or countersunk fastening solution. Built to DIN 7991 standard, this screw features an M12x1.75 thread size and an overall length of 55 mm. It is manufactured from 12.9 grade alloy steel, which delivers high tensile strength suited to demanding mechanical assemblies. A black oxide finish provides modest corrosion resistance and reduces light reflection. The 8 mm hex socket drive is engaged with a standard hex key or Allen driver. Partial threading along the shank is standard for this fastener type and aids in precise clamping and alignment in metalworking, machinery, and structural assemblies.

This flat socket cap screw is intended for use in metric-threaded assemblies where a countersunk or flush-mount head profile is required. The 90-degree flat head seats cleanly into a matching countersunk bore, keeping the fastener surface flush with or below the mating workpiece. Typical applications include machine frames, tooling fixtures, dies, and equipment enclosures where head protrusion would interfere with mating surfaces or moving components. Machinists, millwrights, and mechanical assemblers commonly specify this fastener type in both light industrial and heavy manufacturing environments.

Key Features

• DIN 7991 standard — ensures dimensional consistency and interchangeability in metric assemblies
• 12.9 alloy steel construction — high tensile and proof load ratings for demanding fastening applications
• 90-degree flat hex socket head — seats flush in countersunk bores to eliminate head protrusion
• 8 mm hex socket drive — compatible with standard metric Allen keys and hex bit drivers
• Black oxide finish — reduces reflectivity and provides light surface protection
• Partial threading — supports accurate clamping and alignment in precision assemblies

Compatibility

Designed as a DIN 7991 metric flat socket cap screw for use in any M12x1.75 threaded countersunk application requiring a 12.9 grade fastener.

Installation Notes

Installation should be performed by a qualified machinist or mechanical assembler using a calibrated torque wrench and the correct 8 mm hex key or bit. Always verify that the countersunk bore angle matches the 90-degree head geometry before seating the fastener. Clean and inspect mating threads before installation to prevent galling or cross-threading. De-energize and lock out any machinery before servicing fasteners in live equipment.