Value Collection 601072PR Set Screw 3-56 X 1/4 in Cup Point

Product Description

The VALUE COLLECTION 601072PR is a cup point set screw designed for precision fastening applications requiring a compact, headless profile. Sized at 3-56 x 1/4 inches overall length, it features a unified fine thread (UNF) and is driven with a 0.050 inch hex key. Manufactured from alloy steel to ASTM F912 material grade, it delivers the hardness and shear strength needed for secure holding power against shafts, collars, and similar components. Installation conforms to ASME/ANSI B18.3 dimensional standards. This screw is sold individually with a minimum order quantity of 10 pieces.

Cup point set screws like the 601072PR are used across a wide range of industrial and mechanical assembly applications. Typical uses include locking collars, pulleys, gears, and knobs onto shafts where a positive bite into the shaft surface is required. The cup point geometry creates an indentation that resists rotational and axial movement without requiring a through-hole. These fasteners are commonly specified in HVAC equipment assemblies, motor and fan shaft applications, and precision mechanical sub-assemblies where small-diameter threaded hardware is called out on engineering drawings.

Key Features

• Thread size 3-56 UNF for fine-pitch engagement in small-diameter applications
• Cup point geometry bites into shaft surface for positive axial and rotational resistance
• Alloy steel construction to ASTM F912 material grade for hardness and durability
• Headless hex drive (0.050 inch hex key) allows flush or recessed installation
• Conforms to ASME/ANSI B18.3 dimensional standard
• Overall length of 1/4 inch suits shallow shaft and collar applications

Compatibility

Designed as a standard ASME/ANSI B18.3 cup point set screw in 3-56 UNF thread, suitable for use wherever a headless hex-drive set screw of this thread size and length is specified in mechanical or HVAC equipment assemblies.

Installation Notes

Installation requires a 0.050 inch hex key; ensure the correct key size is used to avoid rounding the drive socket. Power down and de-energize any equipment before servicing shaft-mounted components. Do not overtighten, as the small thread diameter is susceptible to thread stripping in softer mating materials. Follow the equipment manufacturer's assembly specifications for final seating torque and shaft surface preparation.