Value Collection 101117PR Set Screw 5-40 X 3/8 in Cup Point

Product Description

The VALUE COLLECTION 101117PR is a cup point set screw designed for secure, non-permanent fastening in mechanical assemblies. Manufactured from Grade 8 alloy steel, this screw delivers high tensile strength and resistance to shear forces, making it suitable for demanding industrial and trade applications. The cup point geometry bites into the mating surface to resist rotation and axial movement. Driven by a 1/16 inch hex key, the 101117PR threads to the UNC 5-40 standard and measures 3/8 inch in overall length. It meets ASME/ANSI B18.3 and ASTM F912 dimensional and material standards.

This set screw is used in mechanical and electromechanical assemblies where a shaft, rod, or component must be locked to a hub, collar, or housing without a protruding head. Typical applications include motor shafts, gears, pulleys, and precision positioning fixtures. The small 5-40 thread size suits miniature and light-duty assemblies common in instrumentation, HVAC controls, and light mechanical equipment. Installation is performed by machinists, millwrights, maintenance technicians, and mechanical contractors working with small-diameter fastener applications.

Key Features

• Cup point geometry grips mating surfaces to prevent rotation and axial slippage
• Grade 8 alloy steel construction provides high tensile and torsional strength
• 5-40 UNC thread standard ensures compatibility with standard tapped holes
• 1/16 inch hex drive for use with standard hex keys or Allen wrenches
• Meets ASME/ANSI B18.3 and ASTM F912 standards for dimensional accuracy and material properties
• 3/8 inch overall length suits shallow to moderate engagement depths

Compatibility

Designed as a standard UNC 5-40 set screw for use in any tapped hole conforming to the 5-40 thread specification, consistent with ASME/ANSI B18.3 and ASTM F912 requirements.

Installation Notes

Installation is performed using a 1/16 inch hex key; ensure the key is fully seated before applying torque to avoid rounding the drive socket. Power down and de-energize any associated equipment before accessing rotating shafts or assemblies. Clean the mating thread and shaft surface of debris and oils before installation unless a thread-locking compound is specified by the assembly procedure. Minimum order quantity is 100 pieces; plan accordingly for stocking and service kits.