Value Collection -40416-1 Set Screw 1/2-13 X 7/8 in Grade 8

Product Description

The VALUE COLLECTION -40416-1 is a cup point set screw designed for secure shaft-to-hub and collar-to-shaft fastening in mechanical assemblies. Manufactured from alloy steel to Grade 8 specification, it delivers high tensile strength and reliable holding power under load. The 1/2-13 UNC thread size paired with a 7/8-inch overall length makes it suitable for medium-duty clamping applications where a recessed drive fastener is required. A 1/4-inch hex key drive allows installation in tight clearances where a socket or wrench cannot reach. This package contains 50 pieces, making it practical for production line use, maintenance stock, or job-site supply.

Cup point set screws like the -40416-1 are commonly installed in rotating equipment, motor shaft collars, sprockets, gears, pulleys, and couplings across industrial, HVAC, and mechanical systems. The cup point geometry bites into the mating shaft surface to resist both axial and rotational movement. Licensed millwrights, maintenance mechanics, and HVAC technicians working on blower assemblies, fan shafts, and drive components typically use this fastener type. It is appropriate for both original equipment assembly and field replacement applications.

Key Features

• Cup point geometry provides positive shaft engagement to resist axial and rotational slip
• Alloy steel construction with Grade 8 rating delivers high tensile and proof load strength
• 1/2-13 UNC thread standard ensures broad compatibility with standard tapped holes
• 1/4-inch hex key drive suits installation in confined spaces
• Meets ASME/ANSI B18.3 and ASTM F912 fastener standards
• Sold in a 50-piece pack suitable for stocking or production use

Compatibility

Designed for standard 1/2-13 UNC tapped holes in shaft collars, hubs, couplings, and similar mechanical components requiring a cup point set screw per ASME/ANSI B18.3.

Installation Notes

Installation should be performed by a qualified mechanic or technician using a calibrated 1/4-inch hex key or allen driver. De-energize and lock out all rotating equipment before installing or removing set screws in accordance with applicable OSHA lockout/tagout procedures. Do not over-drive the fastener into soft shaft materials without verifying the mating surface can accept a cup point indentation. Apply thread-locking compound where vibration may cause loosening, following the compound manufacturer's guidance.