Value Collection R63266069 Set Screw 1/4-28 X 3/16 in Cup Point

Product Description

The VALUE COLLECTION R63266069 is a 1/4-28 UNF cup point set screw manufactured from 18-8 stainless steel. It measures 3/16 inches in overall length and is driven with a 1/8 inch hex key. Cup point set screws are used to lock shafts, collars, pulleys, and similar components in place by biting into the mating surface. The 1/4-28 thread designation indicates a 1/4 inch nominal diameter with 28 threads per inch, conforming to the Unified National Fine standard. Installers in mechanical, HVAC, plumbing, and electrical trades reach for these when a flush or recessed fastener is required in a rotating or adjustable assembly.

This set screw suits applications where corrosion resistance is a priority, including wet environments, outdoor enclosures, pool equipment panels, and coastal installations. The 18-8 stainless steel construction resists rust and mild chemical exposure without the need for additional plating or coating. At 3/16 inches in length, it is well suited for thin-walled hubs, small collars, and compact shaft assemblies where a longer fastener would bottom out or interfere with the shaft bore.

Key Features

• Cup point geometry bites into the mating shaft to resist axial and rotational movement
• 1/4-28 UNF thread provides finer thread engagement and better vibration resistance compared to UNC equivalents
• 18-8 stainless steel construction resists corrosion in wet and outdoor service environments
• 1/8 inch hex drive accepts standard hex keys and ball-end drivers
• Headless design sits flush or below the surface for use in rotating assemblies and tight clearances

Compatibility

Designed for use in any assembly requiring a 1/4-28 UNF threaded headless set screw with a cup point. Typical fitment includes shaft collars, shaft couplings, pulleys, knobs, and handwheels threaded for 1/4-28 fasteners.

Installation Notes

Installation is performed with a 1/8 inch hex key or Allen driver; ensure the driver is fully seated before applying torque to avoid rounding the socket. De-energize or lock out any rotating equipment before installing or adjusting set screws in accordance with applicable OSHA lockout/tagout procedures. Do not exceed the rated torque capacity of the 18-8 stainless alloy, as stainless fasteners are more susceptible to galling than alloy steel equivalents; applying an anti-seize compound is advisable in applications subject to heat cycling or high clamping loads.