Value Collection 221223BR Shoulder Screw 3/4 in Alloy Steel

Product Description

The VALUE COLLECTION 221223BR is a Grade 8 alloy steel shoulder screw designed for precision fastening applications where a smooth, close-tolerance shoulder is required for alignment, pivoting, or bearing-surface functions. The screw features a 0.750-inch shoulder diameter and a 2-1/4-inch shoulder length, with a 5/8-11 UNC threaded end. Drive engagement is via a 3/8-inch hex socket. The uncoated finish leaves the alloy steel surface bare, suitable for applications where additional coating or lubrication is applied by the installer. Meets ANSI B18.3, ASME/ANSI B18.3, and ASTM A574 standards.

Shoulder screws of this type are used in industrial machinery, jigs and fixtures, linkage assemblies, and mechanical components requiring a precision pivot or guide shaft. The large 0.750-inch shoulder diameter and 2-1/4-inch shoulder length make this screw suited for heavier-duty assemblies where standard shoulder screws would lack sufficient bearing surface. Machinists, millwrights, and maintenance technicians typically install this fastener in production equipment, tooling fixtures, and mechanical assemblies across manufacturing and industrial maintenance environments.

Key Features

• 0.750-inch shoulder diameter provides a precision bearing and alignment surface
• 2-1/4-inch shoulder length accommodates thicker fixtures and multi-layer assemblies
• Grade 8 alloy steel construction delivers high tensile and shear strength
• 5/8-11 UNC thread standard for broad compatibility with standard tapped holes
• 3/8-inch hex socket drive for use with standard hex keys and socket drivers
• Meets ANSI B18.3, ASME/ANSI B18.3, and ASTM A574 standards

Compatibility

Designed as a standard-dimension shoulder screw for industrial and mechanical assembly applications requiring a 0.750-inch shoulder diameter and 5/8-11 UNC threaded engagement.

Installation Notes

Installation is typically performed by machinists or maintenance technicians using a 3/8-inch hex key or socket driver. Ensure the mating tapped hole is clean and properly threaded to 5/8-11 UNC specification before installation. Do not apply excessive torque beyond what the application and material being fastened require, as the shoulder — not the thread — carries the primary load in most shoulder screw applications. De-energize and lock out any machinery before servicing fasteners on moving assemblies.