Value Collection 101471PR Set Screw 3/8-16 X 2-1/2 in Cup Point

Product Description

The VALUE COLLECTION 101471PR is a cup point set screw designed for secure shaft-to-hub and collar fastening applications in mechanical assemblies. Manufactured from Grade 8 alloy steel, this fully threaded fastener delivers high tensile strength and reliable holding power under load. The 3/8-16 UNC thread and 2-1/2 inch overall length make it suited for deeper engagement applications. Drive is a 3/16 inch internal hex (Allen), accepting a standard hex key. It meets ASME/ANSI B18.3 and ASTM F912 standards, confirming dimensional and material compliance. Machinists, millwrights, and maintenance technicians commonly install these fasteners in production and field service settings.

This set screw is used in mechanical drive assemblies where a rotating component such as a pulley, sprocket, gear, or shaft collar must be locked to a shaft. The cup point bites into the shaft surface to resist rotational and axial movement without requiring a through-hole. Typical applications include conveyor systems, pump shafts, HVAC blower wheel hubs, and general industrial machinery. The fractional inch UNC thread form is standard across North American mechanical hardware.

Key Features

• Grade 8 alloy steel construction for high tensile and proof load strength
• Cup point geometry bites into shaft surface for strong anti-rotation hold
• 3/8-16 UNC thread provides broad compatibility with standard tapped holes
• 3/16 inch hex drive accepts common Allen keys and hex bit drivers
• 2-1/2 inch overall length suits deep-engagement or thick-collar applications
• Meets ASME/ANSI B18.3 and ASTM F912 dimensional and material standards

Compatibility

Designed as a standard replacement or service fastener for any mechanical assembly using a 3/8-16 UNC tapped set screw hole requiring a cup point, Grade 8 alloy steel fastener per ASME/ANSI B18.3.

Installation Notes

Installation is performed by machinists, millwrights, or maintenance technicians using a 3/16 inch hex key or Allen driver. De-energize and lock out all equipment before accessing shaft assemblies. Thread the set screw into the tapped hole by hand to avoid cross-threading, then tighten with the appropriate hex key. Do not substitute a lower-grade fastener in applications specifying Grade 8 material.