Metric Blue UST187474 Flat Socket Cap Screw M8x1.25

Product Description

The METRIC BLUE UST187474 is a flat socket cap screw designed for high-strength fastening applications where a low-profile, countersunk head is required. Built to DIN 7991 standards, this screw features an M8x1.25 thread and a 35.00 mm overall length, with a 5.00 mm hex socket drive. Manufactured from 12.9-grade alloy steel, it delivers tensile strength well above standard fastener grades, making it suitable for precision mechanical assemblies and structural joints. The Metric Blue finish provides surface protection. It is fully threaded along its entire length, allowing maximum thread engagement across a range of material thicknesses. Machinists, millwrights, maintenance technicians, and mechanical contractors typically install this type of fastener.

This flat socket cap screw is used in metric-threaded assemblies where the fastener head must sit flush with or below the mating surface. The 90-degree flat head profile allows it to seat cleanly in countersunk holes machined to DIN or ISO standards. Typical applications include machine frames, fixtures, tooling plates, and equipment enclosures that require a clean, unobstructed surface finish. The 12.9 material grade makes it appropriate for high-load and vibration-prone environments. A minimum order quantity of 10 pieces applies.

Key Features

• DIN 7991 standard flat socket cap screw with 90-degree countersunk head
• M8x1.25 metric thread, fully threaded over 35.00 mm overall length
• 12.9 alloy steel construction for high tensile and proof load ratings
• 5.00 mm hex socket drive for precise torque application with standard hex keys
• Metric Blue finish for surface protection and identification

Compatibility

Designed as an OEM-style metric fastener for use in M8x1.25 threaded holes conforming to DIN or ISO metric thread standards in mechanical, industrial, and equipment assembly applications.

Installation Notes

Installation should be performed by a qualified technician or machinist familiar with metric fastener standards. Ensure the mating countersink is machined to the correct 90-degree angle and diameter to match DIN 7991 requirements before installation. Torque to the value specified by the equipment manufacturer for 12.9-grade M8 fasteners using a calibrated hex key or driver. Always de-energize or lock out equipment before servicing fastened assemblies on powered machinery.