Metric Blue UST187475 Flat Socket Cap Screw M8x1.25

Product Description

The METRIC BLUE UST187475 is a flat socket cap screw engineered to DIN 7991 standards, designed for flush or countersunk fastening applications in precision assemblies. It features an M8x1.25 thread and a 5.00 mm hex socket drive with a 90-degree flat head profile. Manufactured from 12.9 grade alloy steel, this screw delivers high tensile strength suitable for demanding mechanical and industrial installations. The Metric Blue finish provides a layer of corrosion resistance while also serving as a visual identifier for metric hardware. The overall length is 40.00 mm with full threading along the shank.

This flat socket cap screw is used in applications where the fastener head must sit flush with or below a mating surface. It is well-suited for machinery, tooling fixtures, automotive components, and fabricated steel assemblies where clearance is limited and a low-profile fastener is required. Installation is carried out by machinists, millwrights, maintenance technicians, and mechanical contractors working with metric-specification equipment and assemblies.

Key Features

• DIN 7991 fastener standard for consistent dimensional compliance
• 12.9 grade alloy steel construction for high tensile and proof load strength
• 90-degree flat head profile allows flush or countersunk seating
• 5.00 mm hex socket drive for precise torque application
• Fully threaded shank along the 40.00 mm overall length
• Metric Blue finish for corrosion resistance and metric identification

Compatibility

Designed as an OEM-style replacement or direct-fit fastener for metric M8x1.25 countersunk hex socket applications conforming to DIN 7991 specifications.

Installation Notes

Installation is performed by machinists or mechanical technicians using a 5 mm hex key or socket driver. Ensure the mating hole is properly countersunk to the correct 90-degree angle before installation. De-energize and lock out any machinery before fastener service in powered assemblies. Do not exceed the rated torque specification for 12.9 grade fasteners as published in applicable engineering references.