Metric Blue UST187527 M8x1.25 Button Cap Screw 16mm

Product Description

The METRIC BLUE UST187527 is an M8x1.25 button socket cap screw designed for metric fastening applications requiring high tensile strength and a low-profile head. Built to Grade 12.9 alloy steel, this screw delivers exceptional clamping force in demanding assemblies. The button head profile reduces protrusion above the mating surface, while the 5 mm hex socket drive allows precise torque application with standard Allen keys. A blue phosphate finish provides corrosion resistance and a uniform appearance. The screw is fully threaded along its 16 mm length under head, ensuring full thread engagement across a range of joint thicknesses.

This screw is suited for mechanical assemblies, machine frames, jigs, fixtures, and equipment panels where a flush or near-flush fastener is required. The M8x1.25 thread standard and ISO 7380 specification make it a direct-fit replacement in metric-designed equipment. It is commonly used by millwrights, mechanical contractors, OEM equipment builders, and industrial maintenance technicians. Sold individually, with a minimum order quantity of 100 pieces per order.

Key Features

• Grade 12.9 alloy steel construction for high tensile and proof load ratings
• Button head profile minimizes protrusion above the joint surface
• 5 mm hex socket drive for use with standard metric Allen keys or hex bit drivers
• Fully threaded 16 mm length under head for maximum thread engagement
• Blue phosphate finish for corrosion resistance and consistent appearance
• Conforms to ISO 7380 fastener standard

Compatibility

Designed as a metric-standard ISO 7380 button socket cap screw for use in any application requiring an M8x1.25 fully threaded fastener with a button head and hex socket drive.

Installation Notes

Installation is typically performed by mechanical technicians using a 5 mm hex key or Allen-style bit driver. Ensure mating threads are clean and free of debris before installation. Grade 12.9 fasteners should not be substituted with lower-grade hardware in high-load applications. Follow applicable equipment manufacturer torque specifications and relevant industry standards when assembling critical joints.