Value Collection 101052PR Set Screw 2-56 X 1/4 in Cup Point

Product Description

The VALUE COLLECTION 101052PR is a 2-56 x 1/4 inch cup point set screw manufactured from Grade 8 alloy steel. Set screws are fully threaded fasteners with no head — they seat flush or below a surface to lock rotating components, collars, knobs, or pulleys onto shafts. This screw uses a hex socket drive (0.035 inch key size) and a cup point tip that bites into the mating shaft to resist rotation and axial movement. It conforms to ASME/ANSI B18.3 and ASTM F912 standards. Machinists, assembly technicians, and maintenance trades use this fastener in light-duty mechanical assemblies where a compact, headless locking fastener is required.

This set screw is suited for small-bore shaft locking applications in residential and commercial mechanical assemblies, instrumentation, motors, and light industrial equipment. The 2-56 thread size targets miniature and precision applications where space is limited. The cup point geometry concentrates clamping force at the shaft contact area, making it effective on both hardened and soft shaft materials. Thread standard is UNC with fractional inch measurement. Minimum order quantity is 100 pieces per order; package quantity is 1.

Key Features

• Cup point tip concentrates holding force on shaft for reliable axial and rotational locking
• Grade 8 alloy steel construction provides high tensile and torsional strength for its size class
• Hex socket drive accepts a 0.035 inch hex key for installation in confined spaces
• Fully threaded headless design seats flush or below surface — no protrusion clearance needed
• Conforms to ASME/ANSI B18.3 and ASTM F912 for dimensional and mechanical consistency
• UNC thread standard ensures broad tool and tapping compatibility

Compatibility

Designed as a standard ASME/ANSI B18.3 compliant set screw for use in any application requiring a 2-56 UNC threaded cup point fastener in alloy steel.

Installation Notes

Installation requires a 0.035 inch hex key or Allen driver. Ensure the mating tapped hole is clean and free of debris before threading. Do not exceed the rated torque range for a 2-56 fastener — overtightening can strip threads or fracture the screw at this size class. Power down or de-energize any rotating equipment before adjusting or replacing set screws in shaft-mounted components.