Value Collection 221205BR Shoulder Screw 5/8 in Alloy Steel

Product Description

The VALUE COLLECTION 221205BR is a Grade 8 alloy steel shoulder screw designed for precision fastening applications where a hardened, accurate-diameter shoulder is required for alignment, pivoting, or bearing retention. The screw features a 5/8-inch shoulder diameter and 5-inch shoulder length, with a 1/2-13 UNC threaded end for secure clamping. The hex socket head accepts a 5/16-inch hex key drive. The uncoated finish leaves the alloy steel surface bare, suitable for applications where additional finishing or lubrication will be applied by the installer. Machinists, maintenance technicians, and assembly professionals install this fastener in jigs, fixtures, linkages, and mechanical assemblies.

This shoulder screw is suited for industrial, manufacturing, and mechanical maintenance applications where a tight-tolerance cylindrical shoulder is needed to serve as a pivot point, guide pin, or rolling element journal. The 5-inch shoulder length accommodates thicker assemblies or stacked components. The 1/2-13 UNC thread is a standard coarse-thread pitch widely used in North American tooling and machinery. Typical installations include die sets, robotic linkages, conveyor guides, and precision fixtures in both light and heavy industrial environments.

Key Features

• 5/8-inch shoulder diameter provides a precision cylindrical surface for alignment and bearing interfaces
• 5-inch shoulder length accommodates deep assemblies and stacked component configurations
• 1/2-13 UNC thread standard for broad compatibility with standard nuts and tapped holes
• Grade 8 alloy steel construction for high tensile strength and wear resistance
• 5/16-inch hex socket drive for installation with standard Allen keys or hex bit drivers
• Meets ANSI B18.3, ASME/ANSI B18.3, and ASTM A574 standards

Compatibility

Designed as an OEM-style replacement or direct-use shoulder screw for industrial machinery, fixtures, jigs, and mechanical assemblies requiring a 5/8-inch shoulder diameter and 1/2-13 UNC thread specification.

Installation Notes

Installation is performed by machinists or maintenance technicians using a 5/16-inch hex key or socket bit driver. Ensure the mating bore is sized to the 5/8-inch shoulder diameter for proper fit and alignment before threading the fastener. Always verify thread engagement depth in the tapped hole meets minimum requirements per applicable engineering standards before applying load. Follow your facility or equipment manufacturer torque guidelines for 1/2-13 UNC fasteners when specified.