Value Collection 101491PR Set Screw 3/8-24 X 1-1/2 in Cup Point

Product Description

The VALUE COLLECTION 101491PR is a cup point set screw designed for secure, non-permanent fastening in mechanical assemblies. Manufactured from Grade 8 alloy steel, it delivers high tensile strength and resistance to shear forces in demanding industrial and mechanical applications. The cup point geometry bites into mating surfaces to resist rotation and axial movement without requiring a through-hole. At 3/8-24 UNF threading and 1-1/2 inches overall length, this fastener is driven with a 3/16-inch hex key and conforms to ASME/ANSI B18.3 and ASTM F912 standards. Machinists, millwrights, and maintenance technicians install these in hubs, collars, pulleys, and shafts across general manufacturing and MRO environments.

This set screw suits residential and commercial mechanical assemblies where a flush or recessed fastener is required. Typical applications include securing shaft collars, sprocket hubs, gear bores, and similar rotational components. The 3/8-24 UNF thread pitch is suited for fine-thread applications where vibration resistance and precise clamping adjustment are important. This item is sold individually per package with a minimum order quantity of 100 pieces.

Key Features

• Cup point geometry bites into mating shaft or surface for strong axial and rotational hold
• Grade 8 alloy steel construction provides high tensile and proof load strength
• 3/8-24 UNF fine thread for precise adjustment and improved vibration resistance
• 1-1/2 inches overall length suits deeper hub and collar engagement
• 3/16-inch hex drive compatible with standard hex keys and Allen wrenches
• Meets ASME/ANSI B18.3 and ASTM F912 dimensional and material standards

Compatibility

Designed as a standard UNF set screw for use in any threaded bore or tapped hole accepting a 3/8-24 fine-thread fastener, including shaft collars, hubs, pulleys, and mechanical couplings requiring a cup point style.

Installation Notes

Installation is typically performed by machinists, millwrights, or maintenance technicians using a calibrated hex key or Allen driver sized to 3/16 inch. Ensure the mating threaded bore is clean and free of debris before driving the screw. Do not exceed the rated torque capacity of the alloy steel fastener by using extended-handle drivers inappropriately. Always de-energize and lock out rotating machinery before servicing shaft-mounted components.