Value Collection 221163BR Shoulder Screw 5/8 in Alloy Steel

Product Description

The VALUE COLLECTION 221163BR is an alloy steel shoulder screw designed for precision mechanical assemblies requiring a close-tolerance bearing surface. The shoulder measures 5/8 inch in diameter and 1-1/2 inches in length, providing a smooth, unthreaded shank that acts as a pivot, guide, or bearing journal. The threaded portion is 1/2-13 UNC. Drive engagement is via a 5/16-inch hex socket. The screw is uncoated and meets ANSI B18.3 and ASTM A574 standards. This part is suited for toolmakers, machine builders, maintenance technicians, and industrial fabricators who need a reliable, dimensionally consistent fastener.

Shoulder screws of this type are commonly installed in jigs, fixtures, dies, and mechanical linkages where a precision cylindrical surface is needed to locate or support a rotating or sliding component. The 5/8-inch shoulder diameter suits medium-load pivot and guide applications in industrial equipment, automation assemblies, and tooling setups. Licensed tradespeople and industrial maintenance mechanics working on mechanical assemblies will find this fastener appropriate for applications that demand consistent shoulder geometry and material strength.

Key Features

• 5/8-inch shoulder diameter with 1-1/2-inch shoulder length for close-tolerance bearing and pivot use
• Grade 8 alloy steel construction for high tensile and shear strength
• 1/2-13 UNC thread standard for broad compatibility with standard threaded bores
• 5/16-inch hex socket drive for secure torque application with standard Allen keys
• Uncoated finish suitable for use as-installed or with customer-applied surface treatment
• Meets ANSI B18.3, ASME/ANSI B18.3, and ASTM A574 standards

Compatibility

Designed as a standard shoulder screw conforming to ANSI B18.3 dimensions, suitable for any application requiring a 5/8-inch diameter shoulder, 1/2-13 UNC threaded engagement, and hex socket drive in a Grade 8 alloy steel fastener.

Installation Notes

Installation requires a 5/16-inch hex key or Allen driver. Ensure the mating threaded bore is clean and properly tapped to 1/2-13 UNC before installation. Do not use an impact driver, as this can damage the hex socket recess or over-torque the fastener. Always follow applicable machinery safety procedures and de-energize or lock out equipment before servicing mechanical assemblies that contain this fastener.