Value Collection 601519BR Set Screw 1-8x4 in Cup Point

Product Description

The VALUE COLLECTION 601519BR is a cup point set screw designed for secure, non-permanent fastening in mechanical assemblies. Manufactured from alloy steel to the ASTM F912 material grade, this fastener provides the hardness and shear strength needed for high-load shaft and collar applications. It measures 4 inches in overall length with a 1-8 UNC thread and is driven with a 9/16-inch hex key. The cup point digs into the mating surface to resist rotational and axial movement without requiring a through-hole. It conforms to ASME/ANSI B18.3 dimensional standards.

This set screw is suited for use in industrial and mechanical maintenance environments where shaft-to-hub connections, set collars, gears, pulleys, and similar components require a reliable locking fastener. The UNC thread form is the standard coarse-pitch pattern used across North American mechanical assemblies, making this screw a direct fit in a wide range of existing threaded bores. Machinists, millwrights, and maintenance technicians working on rotating equipment will find this size appropriate for larger-diameter shaft applications where a full 4-inch engagement depth is required.

Key Features

• Cup point geometry bites into shaft surface to resist rotation and axial movement
• Alloy steel construction rated to ASTM F912 for high hardness and tensile strength
• 1-8 UNC thread provides coarse-pitch engagement standard to North American mechanical assemblies
• 9/16-inch hex drive accommodates standard hex keys and Allen wrenches
• Conforms to ASME/ANSI B18.3 dimensional standards for consistent fitment
• 4-inch overall length suits large-diameter or deep-bore shaft locking applications

Compatibility

Designed as a standard-form replacement or maintenance fastener for any threaded bore accepting a 1-8 UNC set screw conforming to ASME/ANSI B18.3.

Installation Notes

Installation is performed by machinists, millwrights, or maintenance technicians using a calibrated hex key or Allen driver sized to 9/16 inch. De-energize and lock out all rotating equipment before accessing shaft fasteners. Do not over-torque the set screw against soft shaft materials without a hardened flat or keyway, as the cup point will permanently mark the shaft surface. Verify thread engagement depth and ensure the bore is clean and free of debris before driving.