Value Collection 121079PR Set Screw 10-24 X 1/2 in Cone Point

Product Description

The VALUE COLLECTION 121079PR is a 10-24 UNC cone point set screw designed for mechanical assemblies where a positive locking or marking hold is required against a shaft or mating surface. Manufactured from Grade 8 alloy steel, this fastener delivers high tensile and torsional strength suited to demanding industrial and trade applications. The cone point geometry bites into the mating surface for a secure, slip-resistant connection. Driven by a 3/32 inch hex key, the screw measures 1/2 inch in overall length and conforms to ASME/ANSI B18.3 and ASTM F912 standards.

This set screw is used in a wide range of mechanical and industrial installation scenarios, including securing pulleys, collars, gears, and hubs to shafts in HVAC equipment, pump assemblies, and general machinery. The cone point style is particularly suited to applications where the fastener is intended to remain semi-permanent or where a slight dimple in the shaft is acceptable to prevent rotation or axial movement. Installation is performed by licensed mechanics, millwrights, HVAC technicians, and plumbers working with rotating components or mechanical couplings.

Key Features

• Grade 8 alloy steel construction for high tensile and shear strength
• Cone point tip seats into shaft surface to resist axial and rotational movement
10-24 UNC thread for compatibility with standard inch-series tapped holes
• 3/32 inch hex drive for compact installation in tight spaces
• Meets ASME/ANSI B18.3 and ASTM F912 dimensional and material standards
• 1/2 inch overall length suits shallow collar and hub applications

Compatibility

Designed as an OEM-style replacement or stock fastener for mechanical assemblies requiring a 10-24 UNC cone point set screw with a 3/32 inch hex drive.

Installation Notes

Installation requires a 3/32 inch hex key or Allen wrench. Ensure the shaft and tapped hole are clean and free of debris before threading. Always de-energize rotating equipment and lock out or tag out power sources before servicing components secured by set screws. Do not overtighten, as cone point fasteners can deform shaft surfaces beyond the intended seating dimple.