Value Collection 101579P Set Screw 1/2-13 X 1-1/2 in Cup Point

Product Description

The VALUE COLLECTION 101579P is a cup point set screw designed for shaft-to-hub locking and positioning applications in mechanical assemblies. Manufactured from Grade 8 alloy steel, it delivers high tensile strength and resistance to loosening under vibration and load. The cup point geometry bites into the mating surface to create a positive hold without a protruding fastener head. Drive is a 1/4-inch hex socket, making it compatible with standard hex keys and Allen wrenches. Thread size is 1/2-13 UNC with an overall length of 1-1/2 inches. This fastener meets ASME/ANSI B18.3 and ASTM F912 standards. Machinists, millwrights, and maintenance technicians are the typical installers.

This set screw is suited for use in rotating machinery, conveyor systems, motor shaft collars, pulleys, gears, and similar power transmission components where a headless fastener is required to avoid interference with adjacent parts. It is appropriate for both light industrial and heavy-duty mechanical applications where Grade 8 alloy steel strength is specified. The 1/2-13 UNC thread is a common coarse-thread size found across a wide range of manufactured equipment and machinery platforms.

Key Features

• Cup point geometry bites into mating shaft surface for positive, vibration-resistant hold
• Grade 8 alloy steel construction provides high tensile and torsional strength
• 1/4-inch hex socket drive accepts standard hex keys and Allen wrenches
• 1/2-13 UNC thread is a widely used coarse-thread standard in industrial assemblies
• Headless design eliminates protrusion hazards in rotating or confined assemblies
• Meets ASME/ANSI B18.3 and ASTM F912 fastener standards

Compatibility

Designed as an OEM-style replacement or maintenance fastener for mechanical assemblies requiring a 1/2-13 UNC cup point set screw with a 1/4-inch hex drive and 1-1/2-inch overall length.

Installation Notes

Installation is typically performed by machinists, millwrights, or maintenance technicians using a 1/4-inch hex key or T-handle driver. De-energize and lock out all rotating equipment before servicing fasteners in power transmission assemblies, following LOTO procedures per OSHA 29 CFR 1910.147. Ensure the mating shaft and bore are clean and free of debris before seating the cup point. Do not exceed the torque rating specified in the applicable equipment service documentation.