Value Collection 602420PR Set Screw 1/2-20 X 1 in Cup Point Ss A2

Product Description

The VALUE COLLECTION 602420PR is a 1/2-20 UNF cup point set screw manufactured from Austenitic Grade A2 stainless steel. At 1 inch overall length, it is driven by a 1/4-inch hex key and conforms to ASME/ANSI B18.3 and ASTM F880 standards. Cup point set screws are used to lock shafts, collars, pulleys, and similar rotating components in place by biting into the mating surface. Grade A2 stainless construction provides corrosion resistance suitable for wet, outdoor, or chemically exposed environments. This fastener is specified and installed by machinists, millwrights, pipefitters, HVAC technicians, and general maintenance trades.

This set screw is suited for shaft-to-hub locking applications across a wide range of mechanical assemblies including motor shafts, fan hubs, shaft collars, couplings, and valve stems. The cup point geometry creates a defined indent in the mating shaft surface, providing positive rotational and axial resistance. It is appropriate for both light industrial and general mechanical service where stainless steel corrosion resistance is required over standard alloy steel alternatives.

Key Features

• 1/2-20 UNF thread for fine-thread engagement and precise torque control
• 1 inch overall length providing adequate thread engagement depth
• Cup point geometry bites into shaft surface for positive holding force
• Austenitic Grade A2 stainless steel resists corrosion in wet and chemical environments
• 1/4-inch hex drive conforms to ASME/ANSI B18.3 and ASTM F880 standards

Compatibility

Designed for use in any application requiring a 1/2-20 UNF cup point set screw with a 1/4-inch hex drive. Suitable as a replacement or service fastener in shaft collars, couplings, pulleys, fan hubs, and similar mechanical assemblies where stainless steel material is specified.

Installation Notes

Installation requires a calibrated 1/4-inch hex key or Allen driver. Ensure the mating shaft and threaded bore are clean and free of debris before threading the fastener. Torque to the value specified by the assembly manufacturer or applicable engineering standard — do not substitute a numeric torque value not provided in the component documentation. Minimum order quantity for this part is 10 units.