Value Collection 121061PR Set Screw 10-24 5/16in Cone Point

Product Description

The VALUE COLLECTION 121061PR is a cone point set screw designed for mechanical assemblies where a firm, non-reversible hold is required. Manufactured from Grade 8 alloy steel, this fastener delivers high tensile strength and resistance to shear forces. The cone point geometry bites into the mating surface or seats into a matching recess, providing positive axial and rotational locking without the need for a nut. It is driven with a 3/32-inch hex key and conforms to ASME/ANSI B18.3 and ASTM F912 dimensional and performance standards. Machinists, maintenance technicians, and mechanical contractors install these in pulleys, collars, couplings, and shaft assemblies across industrial and commercial applications.

This set screw is suited for use in rotating shaft-collar connections, set-collar locking, and precision mechanical assemblies where concentricity and holding force are critical. The 10-24 UNC thread and 5/16-inch overall length make it a compact fastener appropriate for light-duty to medium-duty machinery components. It is commonly installed in HVAC blower wheel hubs, motor shaft collars, and general mechanical equipment where vibration resistance is required.

Key Features

• Cone point tip bites into mating surface for positive locking and vibration resistance
• Grade 8 alloy steel construction provides high tensile and proof load strength
• 3/32-inch hex drive for precise installation torque control with a standard hex key
• 10-24 UNC thread form ensures broad compatibility with standard tapped holes
• Conforms to ASME/ANSI B18.3 and ASTM F912 for dimensional accuracy and material performance

Compatibility

Designed as an OEM-style replacement or standard-stock set screw for any tapped 10-24 UNC hole requiring a cone point fastener per ASME/ANSI B18.3 specifications.

Installation Notes

Installation is performed with a 3/32-inch hex key; ensure the key is fully seated before applying torque to avoid rounding the drive socket. De-energize and lock out any rotating equipment before installing or removing set screws in shaft-collar applications. Do not exceed the rated proof load of Grade 8 alloy steel when torquing. Inspect the mating shaft or collar surface for proper cone-point seating to ensure full holding force is achieved.