Value Collection 43133 Flat Socket Cap Screw M4x0.7

Product Description

The VALUE COLLECTION 43133 is a flat socket cap screw designed for applications requiring a low-profile, flush or countersunk fastening solution. Built to DIN 7991, this M4x0.7 screw is fully threaded over its 25 mm overall length and driven with a 2.50 mm hex socket. Material grade 12.9 alloy steel provides high tensile strength suitable for demanding mechanical assemblies. The black oxide finish offers mild corrosion resistance and a consistent dark appearance. This fastener is installed by machinists, millwrights, maintenance technicians, and assembly professionals working in precision mechanical, industrial, or equipment manufacturing environments.

The 43133 flat socket cap screw is suited for countersunk through-hole applications where a flush surface is required after installation. The 90-degree flat head seats cleanly into standard DIN 7991 countersinks. Fully threaded along its length, it is appropriate for thin-material applications or where thread engagement is needed across the full fastener body. Typical use cases include machine frames, fixtures, tooling plates, and equipment enclosures where head protrusion is not acceptable.

Key Features

• DIN 7991 fastener standard for consistent countersink fitment
• Grade 12.9 alloy steel for high tensile strength in demanding assemblies
• 90-degree flat head profile seats flush in standard countersunk holes
• 2.50 mm hex socket drive for precise torque application in tight spaces
• Fully threaded body maximizes thread engagement across the full 25 mm length
• Black oxide finish provides mild corrosion resistance and reduced light reflection

Compatibility

Designed as an OEM-style replacement or direct-use metric fastener for applications requiring a DIN 7991 M4x0.7 flat socket cap screw in grade 12.9 alloy steel.

Installation Notes

Installation is performed by machinists or assembly technicians using a 2.50 mm hex key or socket driver. Ensure the mating countersink is machined to the DIN 7991 90-degree specification before installation. De-energize and lock out any equipment before servicing fasteners in live assemblies. Do not substitute a lower-grade fastener in applications specified for grade 12.9 without engineering review.