Value Collection 601237PR Set Screw 1/4-28 X 1-3/4 in Cup Point

Product Description

The VALUE COLLECTION 601237PR is a cup point set screw designed for secure, thread-driven fastening in mechanical assemblies. It features a 1/4-28 UNF thread with an overall length of 1-3/4 inches, driven by a 1/8-inch hex key. Manufactured from alloy steel, this set screw delivers the strength and hardness required for holding collars, hubs, pulleys, and similar components firmly against a shaft. It meets ASME/ANSI B18.3 and ASTM F912 standards, confirming dimensional and material conformance for industrial and mechanical applications. The cup point bites into the mating surface to resist rotational and axial movement under load.

This set screw is suited for use in light-to-medium duty mechanical assemblies across HVAC equipment, motor drive components, fan hubs, and general industrial machinery. The 1/4-28 UNF fine thread provides strong clamping force in tapped holes and is commonly found in precision shafts and machined housings. Sold in a minimum order quantity of 100 pieces, this fastener is appropriate for professional shops maintaining inventory for recurring service and repair work.

Key Features

• Cup point geometry bites into shaft material to resist axial and rotational movement
• 1/4-28 UNF fine thread for high clamping force in precision tapped holes
• 1/8-inch hex drive compatible with standard hex keys and ball-end drivers
• Alloy steel construction for hardness and strength in demanding mechanical applications
• Meets ASME/ANSI B18.3 and ASTM F912 dimensional and material standards
• Overall length of 1-3/4 inches for deeper thread engagement

Compatibility

Designed as an OEM-style replacement or service fastener for mechanical assemblies requiring a 1/4-28 UNF cup point set screw with a 1-3/4-inch overall length and 1/8-inch hex drive.

Installation Notes

Installation is performed by machinists, millwrights, or qualified HVAC and mechanical technicians using a 1/8-inch hex key or ball-end driver. Always de-energize and lock out equipment before servicing any rotating assembly. Ensure the tapped hole is clean and free of debris before threading the set screw to prevent cross-threading or galling. Do not over-torque alloy steel set screws in soft-metal hubs, as the cup point can damage the shaft surface beyond the intended bite depth.