Value Collection 409074PR Set Screw 3/8-16 X 1-1/2 in Cup Point

Product Description

The VALUE COLLECTION 409074PR is a cup point set screw designed for mechanical fastening applications where a headless, flush-mount connection is required. Manufactured from Grade 2 steel with a bright uncoated finish, this screw features a 3/8-16 UNC thread and measures 1-1/2 inches in length under head. The cup point configuration bites into mating surfaces to resist axial and rotational movement. Machinists, millwrights, and mechanical assembly technicians install these fasteners in collars, shaft hubs, and similar components across a wide range of industrial and mechanical systems.

This set screw is suited for general-purpose industrial and mechanical assembly work where a standard UNC fractional-inch thread is specified. The 3/8-16 thread size and 1-1/2 inch length make it a common selection for securing collars, pulleys, gears, and hubs to shafts in light-to-medium duty applications. It is sold in multiples of 100 units per order, with a package quantity of 1, making it appropriate for production environments, MRO stocking, and shop inventory replenishment.

Key Features

• Cup point geometry grips mating shaft surfaces to prevent slippage under load
• 3/8-16 UNC thread standard ensures broad compatibility with standard fractional-inch tapped holes
• Grade 2 steel construction provides adequate strength for general-purpose fastening applications
• Bright uncoated finish with no additional coating, suitable for dry or lightly lubricated environments
• Square drive type for positive engagement and reduced cam-out during installation
• Headless design seats flush or below the surface of the mating component

Compatibility

Designed as a general-purpose replacement or stock fastener for mechanical assemblies requiring a 3/8-16 UNC cup point set screw with a 1-1/2 inch length under head.

Installation Notes

Set screws of this type are installed by machinists or mechanical assembly technicians using a square drive key or bit sized to the drive recess. Ensure the mating tapped hole is clean and free of debris before threading. Do not overtighten, as cup point set screws can cause permanent indentation on shaft surfaces. Verify thread engagement and torque to the assembly specification defined by the equipment manufacturer or applicable mechanical design standard.