Metric Blue UST187481 M4x0.70 Button Cap Screw 25mm

Product Description

The METRIC BLUE UST187481 is an M4x0.70 button socket cap screw with a 25mm length under head, designed for precision fastening applications in mechanical assemblies. Manufactured from Grade 10.9 alloy steel, this fully threaded fastener delivers high tensile strength and reliable clamping force in tight-clearance installations. The blue phosphate finish provides a measure of corrosion resistance and surface protection. The low-profile button head and 2.5mm hex socket drive make this screw well-suited for applications where standard cap screw heads would interfere with mating components or adjacent hardware.

This screw is used in general mechanical, industrial, and equipment assembly work where metric fasteners are specified. The button head profile keeps the fastener low to the surface, making it a common choice in panel mounting, enclosure assembly, and machinery fabrication. It conforms to ISO 7380 fastener standards and uses a metric thread standard, making it compatible with metric-threaded hardware throughout. Minimum order quantity is 10 pieces per order. Typically installed by maintenance technicians, mechanical assemblers, and trade professionals working with metric-spec equipment.

Key Features

• M4x0.70 fully threaded metric thread for consistent engagement
• Grade 10.9 alloy steel construction for high tensile strength
• Low-profile button head for tight-clearance installations
• 2.5mm hex socket drive for precise torque application
• Blue phosphate finish for surface protection and corrosion resistance
• Conforms to ISO 7380 fastener standard

Compatibility

Designed as an ISO 7380-compliant metric button socket cap screw suitable for use in standard M4x0.70 threaded assemblies across mechanical and industrial applications.

Installation Notes

Install using a 2.5mm hex socket driver or hex key. Ensure the mating threaded hole is clean and free of debris before installation. Do not overtighten, as high-strength alloy screws can strip smaller metric threads if torque is not controlled. Power down or de-energize any equipment before servicing fasteners on live assemblies.