Value Collection 534028PR M4x0.7 Flat Socket Cap Screw

Product Description

The VALUE COLLECTION 534028PR is a metric flat socket cap screw engineered for applications where a flush or countersunk fastener profile is required. Built to DIN 7991 standards from 12.9 grade alloy steel with a black oxide finish, this screw delivers high tensile strength and moderate corrosion resistance in a low-profile form. The hex socket drive accepts a 2.5 mm hex key, making it well-suited for tight clearances. At M4x0.7 thread size and 16 mm overall length with full threading, it is a staple in precision mechanical assemblies, machine frames, and equipment enclosures. Machinists, millwrights, and maintenance technicians install this fastener type regularly across industrial and commercial settings.

This flat socket cap screw is used in applications where a standard button-head or hex-head screw would protrude above the mating surface. Typical install scenarios include panel mounting, fixture building, CNC machine assemblies, and equipment housings where a flush surface finish is functionally or aesthetically required. The 90-degree flat head seats cleanly into countersunk holes, distributing clamping load across the chamfer. It is sold in multiples of 100, making it appropriate for production assembly use as well as shop stock.

Key Features

• DIN 7991 standard construction for consistent dimensional compliance
• 12.9 material grade alloy steel for high tensile and proof load strength
• Black oxide finish for mild corrosion resistance and reduced light reflection
• 90-degree flat head seats flush in standard countersunk holes
• Hex socket drive (2.5 mm) compatible with standard metric hex keys and drivers
• Fully threaded M4x0.7 shank at 16 mm overall length for maximum thread engagement

Compatibility

Designed as an OEM-style and general-purpose replacement or stock fastener for metric M4x0.7 countersunk socket head screw applications conforming to DIN 7991.

Installation Notes

Installation is performed by machinists or maintenance technicians using a 2.5 mm hex key or hex bit driver. Ensure the mating hole is countersunk to a 90-degree included angle before installation. Power down or de-energize any equipment before fastener replacement on live assemblies. Do not exceed the rated torque range for 12.9 grade M4 fasteners as specified by applicable engineering standards for the assembly.