Value Collection 409060PR Cup Point Set Screw 5/16-18

Product Description

The VALUE COLLECTION 409060PR is a cup point set screw designed for secure, no-slip fastening in mechanical assemblies. Manufactured from Grade 2 steel with a bright uncoated finish, this screw features a 5/16-18 UNC thread and a 1-inch length measured under the head. The square drive provides positive torque engagement, reducing the risk of cam-out during installation. This fastener is used by machinists, millwrights, and maintenance technicians to lock shafts, collars, pulleys, and similar components in fixed rotational or axial positions without a protruding head. The cup point bites into the mating surface to resist movement under load.

This set screw is suited for general industrial, mechanical, and maintenance applications where a flush or recessed fastener is required. Typical installations include shaft-to-hub connections, set collar locking, and fixture assemblies across light to medium-duty machinery. The UNC thread form is the standard for fractional-inch fasteners in North American trade and industrial environments. This item is sold individually but must be ordered in multiples of 100.

Key Features

• Cup point geometry bites into shaft or mating surface for strong axial and rotational hold
• Square drive provides high torque transfer and reduced cam-out risk
• 5/16-18 UNC thread — standard fractional-inch coarse thread for wide tool compatibility
• Grade 2 steel construction suitable for general-purpose mechanical fastening
• Bright uncoated finish — no surface treatment to interfere with dimensional tolerances
• Headless design sits flush or below the surface to eliminate snag points

Compatibility

Designed as a standard-format cup point set screw with 5/16-18 UNC threading, compatible with any tapped hole or threaded collar accepting a 5/16-18 fastener in general mechanical and industrial applications.

Installation Notes

Installation is performed with a square-drive key or bit sized to match the drive recess. Ensure the mating shaft or surface is clean and free of debris before seating the cup point to achieve proper bite. Power down or de-energize any rotating equipment before servicing collars, hubs, or shaft-mounted components. Do not exceed the rated torque capacity of Grade 2 steel fasteners; consult applicable mechanical standards for torque guidelines.