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The METRIC BLUE UST179805 is a partially threaded socket cap screw engineered for high-strength fastening applications. It features an M12 x 1.75 thread size, a 140 mm length under head, and a hex socket drive for torque application with a standard hex key or Allen driver. Manufactured from alloy steel to a 12.9 material grade, this screw delivers the high tensile strength and hardness required in demanding mechanical and structural assemblies. The Metric Blue finish provides a protective coating that aids in corrosion resistance and part identification. Weighing 0.29 pounds, it is sold individually with a minimum order quantity of 5 units.
This socket cap screw is suited for use in precision mechanical assemblies, industrial machinery, automotive, and structural applications where high-clamping force and tight tolerances are required. The partial threading is common in applications where a smooth shank section is needed for alignment or shear loading. Licensed mechanics, machinists, and maintenance professionals working with metric hardware specify 12.9-grade alloy socket cap screws for high-load joints where standard-grade fasteners are insufficient.
Designed as a metric replacement or service fastener for applications requiring an M12 x 1.75 partially threaded socket cap screw with a 140 mm length under head and 12.9 grade alloy steel construction.
Installation should be performed by a qualified mechanic or machinist familiar with metric fastener specifications and torque requirements. Always verify that the mating threaded hole is clean, undamaged, and compatible with M12 x 1.75 thread pitch before installation. Use the appropriate hex key or socket driver sized for the socket cap head to avoid stripping the drive recess. Follow applicable equipment manufacturer torque specifications and relevant industry standards when tightening 12.9-grade fasteners in structural or safety-critical joints.
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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