Value Collection R40311464 Set Screw 1-72 Cup Point Ss 18-8

Product Description

The VALUE COLLECTION R40311464 is a Number 1-72 UNF cup point set screw machined from 18-8 stainless steel. At 3/32 inches in overall length, this headless fastener is driven with a 0.035-inch hex key and seats with a cup point that bites into the mating shaft to resist rotation and axial movement. The 18-8 stainless alloy provides corrosion resistance suitable for light industrial, instrumentation, and mechanical assembly environments. Machinists, maintenance technicians, and precision assemblers install these screws where a flush or below-flush fastener is required and head clearance is zero.

Number 1-72 cup point set screws are commonly used in miniature shaft-to-hub connections, small knobs, collars, and adjustment mechanisms found in instrumentation, light-duty mechanical assemblies, and precision equipment. The fine UNF thread pitch offers tighter thread engagement relative to thread diameter, making this screw well-suited for thin-walled hubs or applications that see vibration. These fasteners are sold individually per package with a minimum order quantity of 100 pieces, making them appropriate for shop stock or production quantities.

Key Features

• Cup point geometry bites into shaft surface for firm holding power without a separate locking element
• 18-8 stainless steel construction provides corrosion resistance for wet or chemically active environments
• Number 1-72 UNF fine thread for high thread engagement in thin-walled or miniature components
• Headless design allows flush or sub-flush installation where head clearance is not available
• 0.035-inch hex key drive for precise torque application in tight spaces
• Lightweight at 0.001 pounds per piece, suitable for weight-sensitive assemblies

Compatibility

Designed as a standard UNF headless set screw for use in any Number 1-72 threaded hole requiring a cup point fastener in stainless steel.

Installation Notes

Installation requires a 0.035-inch hex key; use a calibrated torque driver where the application specifies a torque limit for miniature fasteners. Ensure the mating threaded hole is clean and free of debris before threading to avoid galling, which is a known risk with stainless-to-stainless contact. Apply an anti-seize compound rated for stainless steel if repeated removal is anticipated. Follow applicable mechanical assembly standards for the specific equipment being serviced.