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Loc Wel Knurled Cup Point Socket Set Screws, Thermal Black Oxide (Inch)

Loc‑Wel knurled cup point socket set screws are engineered for maximum locking strength in high‑vibration applications where standard cup point or knurled designs are not enough. These screws feature a Loc‑Wel locking pellet embedded in the threads, combined with a knurled cup point, delivering exceptional resistance to loosening under dynamic loads.
The knurled cup point provides aggressive bite and friction against the mating surface, while the Loc‑Wel pellet generates prevailing torque, ensuring the screw stays firmly seated even during repetitive motion or shock. The thermal black oxide finish delivers enhanced lubricity, improved wear resistance, and light corrosion protection—all wrapped in a sleek, non‑reflective black appearance ideal for industrial equipment.
For large scale orders, request a quote to receive our best pricing available for your custom order.
Loc‑Wel knurled cup point set screws are specifically designed for heavy‑duty mechanical assemblies where vibration, rotation, or repeated cycling can cause traditional set screws to back out.
The Loc‑Wel locking element acts as an internal thread‑locking device, providing consistent torque retention across multiple installations. At the same time, the knurled cup point digs into the material surface for superior holding power and alignment stability.
With a thermal black oxide finish boosting durability and installation performance, these screws are widely used in machinery drives, couplings, pulleys, collars, conveyor systems, automation equipment, and assemblies exposed to heavy vibration or load changes.
Available in a range of sizes to meet industrial, OEM, and repair‑focused fastening needs.
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