Metric Blue UST184025 Flat Socket Cap Screw M5x0.8 25mm

Product Description

The METRIC BLUE UST184025 is a flat socket cap screw engineered to DIN 7991 standards for high-strength metric fastening applications. Sized at M5x0.8 with a 25 mm overall length and fully threaded shank, it uses a 3.00 mm hex socket drive and a 90-degree flat head profile that sits flush with or below the mating surface when installed. The screw is manufactured from 12.9 grade alloy steel, the highest commonly used property class for socket cap screws, and finished in Metric Blue coating for corrosion resistance and identification. This fastener is installed by millwrights, machine builders, maintenance technicians, and mechanical contractors working in metric environments.

This screw is suited for flush-mount fastening in precision assemblies, machine frames, fixtures, tooling plates, and mechanical enclosures where a protruding head is not acceptable. The fully threaded configuration makes it appropriate for through-hole and short-grip applications where maximum thread engagement is required across the full fastener length. The 90-degree flat head countersinks into standard metric countersunk holes, keeping assembled surfaces smooth and unobstructed.

Key Features

• DIN 7991 standard flat socket cap screw with 90-degree flat head profile
• 12.9 alloy steel construction for high tensile and proof load capacity
• M5x0.8 thread size with 25 mm overall length, fully threaded
• 3.00 mm hex socket drive for precise torque application with standard allen keys
• Metric Blue finish for corrosion resistance and property class identification
• Fully threaded shank maximizes thread engagement in through-hole and short-grip applications

Compatibility

Designed as a metric countersunk socket cap screw per DIN 7991 for use in standard M5x0.8 threaded metric holes requiring a flush or sub-flush head seating in precision mechanical and industrial assemblies.

Installation Notes

Installation is performed by hand-threading into a pre-tapped or through-hole M5x0.8 countersunk bore, then driving to torque with a 3.00 mm hex key or socket tool. Ensure the mating countersink angle matches the 90-degree flat head geometry before final seating. Power down or de-energize any machinery before servicing fasteners in live assemblies. Do not mix metric and unified thread specifications in the same fastener pattern.