Value Collection 225130PR Shoulder Screw 1/2in X 2-3/4in 3/8-16

Product Description

The VALUE COLLECTION 225130PR is a hex socket shoulder screw machined from 4140 alloy steel, designed for precision fastening applications where a smooth, close-tolerance shoulder is required to serve as a locating pin, pivot, or guide shaft. The shoulder measures 0.5 inches in diameter and 2.75 inches in length, with a 3/8-16 UNC threaded end. The hex socket drive accepts a 1/4-inch hex key for installation. This screw meets ASME/ANSI B18.3, ASTM F835, and IFI 124 standards, making it suitable for demanding mechanical assemblies in industrial and trade environments.

Shoulder screws of this type are used across a wide range of applications including linkage pivots, die and mold assemblies, fixture locating, and precision machinery components. The 4140 alloy steel construction provides high tensile strength and wear resistance, making this screw appropriate for both light and heavy-duty mechanical assemblies. Installation is typically performed by machinists, millwrights, or mechanical technicians working on precision fixtures, jigs, or moving linkage systems.

Key Features

• 0.5-inch shoulder diameter with 2.75-inch shoulder length for precise fit and alignment
• 3/8-16 UNC threaded end for secure engagement in tapped holes
• 4140 alloy steel construction for high tensile strength and wear resistance
• 1/4-inch hex socket drive for installation with standard hex keys or Allen drivers
• 3/4-inch head diameter and 5/16-inch head height for positive seating
• Meets ASME/ANSI B18.3, ASTM F835, and IFI 124 standards

Compatibility

Designed as an OEM-style replacement or standard-fitment shoulder screw for mechanical assemblies requiring a 0.5-inch diameter shoulder, 3/8-16 UNC thread, and hex socket drive in 4140 alloy steel.

Installation Notes

Installation is performed by inserting the shoulder into the clearance hole and threading the fastener end into a tapped hole using a 1/4-inch hex key. Ensure the mating clearance hole is sized appropriately for the 0.5-inch shoulder diameter to achieve the intended locating or pivot function. De-energize and lock out any machinery before servicing assemblies that contain shoulder screws. Do not exceed the torque capacity of the 3/8-16 thread for the material being fastened into.