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Knurled Cup Point Socket Set Screws, Thermal Black Oxide, Alloy (Inch)
Alloy steel knurled cup point socket set screws with a thermal black oxide finish provide maximum holding power in high‑vibration and high‑torque applications. Designed with a deep cup‑shaped point surrounded by a knurled serrated edge, these set screws bite securely into the mating surface, increasing friction and preventing loosening, rotation, or slippage under load.
The thermal black oxide coating adds mild corrosion resistance, improved wear properties, and better lubricity during installation, while providing a uniform, non‑reflective black appearance ideal for machinery and industrial equipment. The internal hex (Allen) drive ensures strong torque engagement and easy access even in confined locations.
Perfect for securing shafts, collars, gears, pulleys, and rotating assemblies, knurled cup point set screws outperform standard cup points when enhanced locking action is required.
For large scale orders, request a quote to receive our best pricing available for your custom order.
Knurled cup point set screws are engineered for heavy‑duty performance in applications with continuous motion, vibration, or shock. The knurled rim cuts into the mating surface to create additional friction, while the cup point provides a centered, stable seat that resists axial movement.
These alloy steel screws offer excellent strength and holding ability, making them ideal for industrial machinery, drive mechanisms, automation systems, and equipment requiring reliable long‑term fastening.
The thermal black oxide finish further improves durability and installation efficiency, making these screws suitable for production environments and maintenance operations. Available in a complete range of thread sizes and lengths to meet precise engineering requirements.
