Value Collection 225232BR Shoulder Screw 3/4 in 4140 Steel

Product Description

The VALUE COLLECTION 225232BR is a hex socket shoulder screw machined from 4140 alloy steel, designed for precision fastening applications where a controlled-diameter shoulder is required for bearing, bushing, or pivot alignment. The shoulder measures 0.75 inches in diameter and 3 inches in length, providing a smooth, close-tolerance shank for parts that rotate or slide along it. The 5/8-11 UNC threaded section locks the assembly in place. This screw meets ASME/ANSI B18.3, ASTM F835, and IFI 124 standards, making it a reliable choice for structural and mechanical assemblies. Installation is performed with a 3/8 inch hex socket driver.

This shoulder screw is suited for industrial, mechanical, and structural applications where a hardened alloy steel fastener is needed to support rotational or linear motion components. Typical uses include jig and fixture assemblies, linkage pivots, cam followers, and precision machinery where the shoulder seats a bearing or bushing. The 1 inch head diameter and 0.5 inch head height provide solid clamping engagement. A single unit is packaged per order.

Key Features

• 3/4 inch shoulder diameter and 3 inch shoulder length for precision fit and extended bearing surface
• 4140 alloy steel construction for high strength and wear resistance
• 5/8-11 UNC thread standard for broad compatibility with standard tapped holes
• 3/8 inch hex socket drive for secure, high-torque installation
• 1 inch head diameter and 0.5 inch head height for positive seating
• Meets ASME/ANSI B18.3, ASTM F835, and IFI 124 standards

Compatibility

Designed as a standard shoulder screw replacement or new-install fastener for mechanical assemblies requiring a 3/4 inch shoulder diameter, 3 inch shoulder length, and 5/8-11 UNC thread in 4140 alloy steel.

Installation Notes

Installation is performed by machinists, millwrights, or experienced mechanical technicians using a 3/8 inch hex key or socket driver. Ensure the mating bore is sized to the shoulder diameter for proper fit before threading the fastener. Do not use an impact driver on the hex socket, as this may damage the drive recess or distort thread engagement. Always verify thread engagement depth meets the requirements of the assembly design before applying final torque.