Metric Blue UST187525 M8x1.25 Button Cap Screw 10mm

Product Description

The METRIC BLUE UST187525 is an M8x1.25 button head socket cap screw with a 10mm length under the head, manufactured from Grade 12.9 alloy steel with a blue phosphate finish. Conforming to ISO 7380 and the metric thread standard, this fastener delivers high tensile strength suited to demanding mechanical assemblies. The low-profile button head and 5mm hex socket drive allow installation in recessed or space-constrained applications where a standard cap screw head would interfere with adjacent components. Licensed mechanics, millwrights, and industrial maintenance technicians are the primary installers.

This screw is used in metal fabrication, machine assembly, automotive, and general industrial applications where an M8x1.25 metric fastener with a button head profile is required. The fully threaded shank maximizes thread engagement across the 10mm grip range. The blue phosphate coating provides corrosion resistance and reduces galling during installation. Sold individually with a minimum order quantity of 100 pieces, making it appropriate for production-line or fleet-maintenance purchasing.

Key Features

• Grade 12.9 alloy steel construction for high tensile and proof load strength
• Blue phosphate finish for corrosion resistance and reduced thread galling
• Low-profile button head design for flush or near-flush surface applications
• Fully threaded shank maximizes thread engagement
• 5mm hex socket drive for use with standard hex keys or socket drivers
• Conforms to ISO 7380 fastener standard

Compatibility

Designed as an ISO 7380-compliant M8x1.25 metric button socket cap screw suitable for tapped holes requiring a 10mm under-head length fastener in metal or rigid substrate assemblies.

Installation Notes

Installation requires a 5mm hex key or hex socket driver; do not use an undersized or worn driver, as this can strip the socket recess at Grade 12.9 torque levels. Verify that the mating tapped hole conforms to the M8x1.25 metric thread standard before installation. Follow the assembly manufacturer's torque specifications for Grade 12.9 fasteners, as overtorquing can cause thread pull-out in softer base materials. Ensure mating surfaces are clean and free of debris before seating the screw.