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The METRIC BLUE UST184130 is a flat socket cap screw designed for precision metric fastening in demanding structural and mechanical applications. Built to DIN 7991 standards, it features a 90-degree flat head profile driven by an 8 mm hex socket. The screw is manufactured from 12.9 grade alloy steel, the highest common metric fastener grade, offering high tensile strength and resistance to shear forces. The Metric Blue finish provides corrosion resistance and surface identification. The M12x1.75 thread is fully threaded along the 30 mm overall length, ensuring maximum thread engagement across the entire grip range.
This fastener is used in applications where a flush or countersunk head profile is required. The flat 90-degree head seats into a matching countersunk bore, keeping the fastener head at or below the mating surface. Typical applications include machine frames, structural brackets, automotive components, and fabricated assemblies where surface clearance is critical. Installation is performed by machinists, millwrights, mechanics, and maintenance technicians working with metric-spec equipment.
Designed as a standard DIN 7991 metric flat socket cap screw for use in any application requiring an M12x1.75 countersunk hex socket fastener.
Installation requires an 8 mm hex socket or Allen key. The mating bore should be machined to a matching 90-degree countersink to ensure proper head seating. Apply appropriate torque using a calibrated torque wrench in accordance with the equipment manufacturer specifications and applicable mechanical standards. Inspect thread engagement and countersink condition before final assembly.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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