Value Collection 601085PR Set Screw 4-40 X 7/16 in Cup Point

Product Description

The VALUE COLLECTION 601085PR is a 4-40 UNC cup point set screw manufactured from Grade 8 alloy steel. Set screws are headless fasteners used to secure a component — such as a pulley, gear, or collar — onto a shaft by applying direct pressure at the point of contact. The cup point geometry bites into the mating surface to resist rotation and axial movement. This screw measures 7/16 inches in overall length and is driven with a 0.050-inch hex key. It meets ASME/ANSI B18.3 and ASTM F912 standards. Installation professionals and maintenance technicians use these in mechanical assemblies, motion control applications, and equipment repairs.

This set screw is suited for light-duty mechanical assemblies where a small-diameter, fine-thread fastener is required. The 4-40 thread size is common in precision equipment, instrumentation, and small machinery. The cup point is the most widely used set screw point type and provides reliable holding power in both rotational and axial loading conditions. Sold individually with a minimum order quantity of 100 pieces, making this suitable for production, maintenance stock, or service shops requiring consistent fastener supply.

Key Features

• Cup point geometry provides strong grip on shaft surfaces without requiring a flat or detent
• Grade 8 alloy steel construction for high tensile and torsional strength
• 4-40 UNC thread standard for use in precision and light mechanical applications
• 7/16-inch overall length suits shallow engagement requirements
• 0.050-inch hex drive compatible with standard hex keys and Allen wrenches
• Meets ASME/ANSI B18.3 and ASTM F912 fastener standards

Compatibility

Designed as an OEM-style replacement or maintenance stock fastener for any mechanical assembly requiring a 4-40 UNC cup point set screw with a 7/16-inch overall length and 0.050-inch hex drive.

Installation Notes

Installation is performed with a 0.050-inch hex key torqued to the fastener manufacturer specifications for the application. Always clean and inspect the threaded bore before installation to avoid cross-threading. De-energize and lock out any rotating equipment before servicing components secured by set screws. Avoid over-tightening, which can shear the screw or damage the mating shaft surface.