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The METRIC BLUE UST018976 is a flat socket cap screw designed for high-strength fastening applications requiring a flush or countersunk head profile. It features an M12x1.75 thread and an overall length of 80 millimeters, fabricated from 12.9 grade alloy steel for maximum tensile strength. The 8 mm hex socket drive accepts a standard hex key for installation and removal. The metric blue finish provides a distinctive visual identifier and light surface protection. This fastener is used by mechanical assemblers, millwrights, and maintenance technicians working on machinery, tooling, and structural assemblies where a recessed head profile is required.
The UST018976 is suited for metric fastening applications in manufacturing, industrial equipment assembly, and precision mechanical work. The 90-degree flat head seats into a countersunk hole, creating a flush surface finish that is critical in high-tolerance assemblies, sliding components, and anywhere a protruding head would interfere with clearance or function. It is commonly installed in metal-to-metal joints where 12.9 grade strength is specified by the engineer or OEM.
Designed for use in metric fastening applications requiring a countersunk flat-head socket cap screw with an M12x1.75 thread pitch and 12.9 material grade. Verify countersink angle and thread engagement depth against the mating component specification before installation.
Installation should be performed by qualified mechanical technicians familiar with metric fastener torque specifications and countersink preparation. Ensure the mating bore is machined to the correct 90-degree countersink angle and diameter before driving the fastener. Use a calibrated torque wrench and the correct 8 mm hex key bit to achieve the required clamp load without damaging the drive socket. Follow applicable engineering specifications or OEM torque tables for 12.9 grade M12 fasteners, as these values are not provided here.
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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