Value Collection R63006443 Set Screw 3/8-16 X 1-1/4 in

Product Description

The VALUE COLLECTION R63006443 is a 3/8-16 UNC cup point set screw machined from 18-8 stainless steel. Set screws are fully threaded fasteners with no head — they seat flush or below the surface of the workpiece and apply clamping force through a point contact at the tip. The cup point geometry bites into the mating surface to resist rotation and axial movement. At 1-1/4 inches in length and 3/8-16 thread pitch, this fastener is suited to medium-duty mechanical assemblies where corrosion resistance and secure shaft or collar retention are required. Machinists, maintenance technicians, and industrial assemblers install these as standard hardware in shafts, hubs, collars, and gears.

This set screw is used in applications where a flush or recessed fastener must lock a component to a shaft or frame without protruding. Typical installations include shaft collars, shaft couplings, pulleys, hand wheels, and mechanical drive components. The 18-8 stainless steel construction makes it appropriate for environments with moisture exposure or mild chemical contact, including light HVAC, plumbing, pool, and general industrial assemblies. The square drive style requires a square-key driver for installation and provides good torque transfer without cam-out risk.

Key Features

• Cup point tip bites into mating surface for secure hold against rotation and axial load
• 18-8 stainless steel construction resists corrosion in wet or mildly corrosive environments
• 3/8-16 UNC thread for broad compatibility with standard tapped holes
• Square drive style supports high installation torque with reduced cam-out
• Fully threaded headless design seats flush or below surface for clean fitment
• 1-1/4 inch length provides adequate thread engagement for medium-duty retention

Compatibility

Designed as a standard UNC cup point set screw for use in any tapped 3/8-16 threaded hole requiring a headless, flush-seating fastener in stainless steel.

Installation Notes

Installation requires a correctly sized square-key driver. Ensure the receiving hole is cleanly tapped to 3/8-16 UNC specification before installation. De-energize or lock out any rotating machinery before inserting or removing set screws in shaft or hub assemblies. Do not over-torque — seat firmly until the cup point contacts the shaft surface and resistance increases.