Value Collection 101289PR Set Screw 10-32 1-1/4in Cup Point

Product Description

The VALUE COLLECTION 101289PR is a 10-32 x 1-1/4 inch cup point set screw manufactured from Grade 8 alloy steel. Set screws are headless fasteners used to secure a component — such as a gear, collar, or pulley — against a shaft by biting into or applying pressure against the mating surface. The cup point geometry creates a small indentation in the shaft for a positive, repeatable hold. Driven with a 3/32 inch hex key, this fastener meets ASME/ANSI B18.3 and ASTM F912 standards, making it suitable for precision assemblies where dimensional consistency and material strength are required.

This set screw is used in mechanical and industrial applications where a shaft-mounted component must be locked in position without a protruding head. Common installations include motor shafts, conveyor components, valve stems, and HVAC blower assemblies. The 10-32 UNF thread provides fine thread engagement suitable for thin-walled hubs and close-tolerance applications. Grade 8 alloy steel construction supports higher clamp loads compared to lower-grade alternatives.

Key Features

• 10-32 UNF thread for fine-pitch engagement in close-tolerance assemblies
• Cup point geometry bites into shaft surface for a secure, repeatable hold
• Grade 8 alloy steel construction for high clamp load capacity
• 3/32 inch hex drive — compatible with standard hex keys and L-wrenches
• Meets ASME/ANSI B18.3 and ASTM F912 dimensional and material standards
• Overall length of 1-1/4 inches provides deep thread engagement

Compatibility

Designed as a standard 10-32 UNF cup point set screw for use in any application requiring an ASME/ANSI B18.3 compliant headless fastener of this thread size and length.

Installation Notes

Installation is typically performed by maintenance technicians or mechanical assemblers using a 3/32 inch hex key or Allen wrench. Ensure the mating shaft and threaded hole are clean and free of debris before installation. Apply appropriate thread-locking compound if vibration loosening is a concern in the application. Do not exceed the rated torque for the thread size and material grade to avoid stripping the socket drive.