Metric Blue UST187458 Flat Socket Cap Screw M4x0.7

Product Description

The METRIC BLUE UST187458 is a flat socket cap screw designed for precision fastening applications that require a flush or countersunk head profile. Built to DIN 7991 standards, it features an M4x0.7 thread and a 2.50 mm hex socket drive. The screw is fully threaded along its 20.00 mm overall length and is manufactured from grade 10.9 alloy steel, delivering high tensile strength for demanding mechanical assemblies. The metric blue finish provides a measure of corrosion resistance and surface identification. This fastener is installed by machinists, millwrights, and mechanical technicians working in precision assembly environments.

This screw is suited for metric fastening applications where a low-profile or flush head is required, such as in machine frames, fixtures, panels, and mechanical components. The 90-degree flat head seats cleanly into countersunk holes, keeping the fastener surface flush with or below the mating material. It is sold individually but carries a minimum order quantity of 100 pieces, making it appropriate for production, maintenance, or repair operations that require consistent metric hardware stock.

Key Features

• DIN 7991 standard construction for consistent dimensional accuracy
• Grade 10.9 alloy steel provides high tensile strength for structural and mechanical fastening
• Fully threaded 20.00 mm overall length ensures maximum thread engagement
• 2.50 mm hex socket drive compatible with standard metric Allen keys and hex bit drivers
• 90-degree flat head profile seats flush in countersunk holes
• Metric blue finish aids in corrosion resistance and metric series identification

Compatibility

Designed as a DIN 7991 metric flat socket cap screw for use in countersunk M4x0.7 threaded applications across general mechanical, industrial, and precision assembly use cases.

Installation Notes

Installation requires a 2.50 mm hex key or equivalent hex bit driver. Ensure the mating hole is countersunk to the appropriate 90-degree angle before seating the fastener. Verify thread engagement length and hole preparation before applying torque to avoid galling or cross-threading. Grade 10.9 fasteners should not be reused in critical joints after removal without inspection.