1/4"-28 x 1/2" Set Screw, Knurled Cup Point, Zinc

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Our 1/4"-28 x 1/2" Set Screw, Knurled Cup Point are ideal for environments with heavy vibrations that require a permanent connection. Unlike standard screws that feature a head and threaded shaft, headless socket set screws consist of a fully threaded shaft designed for flush installation. This design is ideal for mechanical assemblies with tight space constraints, such as securing a pulley or gear to a shaft, as the screw sits flush or just below the surface once the appropriate torque is applied. Screws are plated with zinc for moderate corrosion resistance without compromising strength.