Value Collection 711253BR Shoulder Screw 5/8 in 8 in 4140 Steel

Product Description

The VALUE COLLECTION 711253BR is a hex socket shoulder screw machined from 4140 alloy steel with no surface coating. It features a 5/8-inch shoulder diameter and an 8-inch shoulder length, making it well suited for applications that require a precise cylindrical bearing surface. The thread is 1/2-13 UNC, and the hex socket drive accepts a 5/16-inch hex key. The head measures 7/8 inch in diameter and 3/8 inch in height. This fastener is manufactured to ANSI B18.3, ASME/ANSI B18.3, and ASTM A574 standards, ensuring dimensional and mechanical consistency for industrial and mechanical assembly work.

Shoulder screws of this type are used across a wide range of mechanical assembly applications including linkage pivot points, jig and fixture construction, die sets, and shafting guides where a hardened, close-tolerance cylindrical surface is needed. The 8-inch shoulder length is longer than standard, making it appropriate for deep-stack assemblies, guide rails, and applications that require an extended bearing journal. Maintenance technicians, tool and die makers, and machine builders are the typical installers of this fastener type.

Key Features

• 5/8-inch shoulder diameter with a precision ground cylindrical surface for bearing and pivot use
• 8-inch shoulder length accommodates deep-stack or extended-reach assembly applications
• 4140 alloy steel construction provides high tensile strength and wear resistance
• 1/2-13 UNC thread engages standard tapped holes in steel and aluminum structures
• 5/16-inch hex socket drive for torque application with a standard Allen key
• Uncoated finish suitable for use where secondary coating or plating will be applied
• Meets ANSI B18.3, ASME/ANSI B18.3, and ASTM A574 dimensional and mechanical standards

Compatibility

Designed as an OEM-style replacement or direct-use shoulder screw for mechanical assemblies requiring a 5/8-inch diameter shoulder, 1/2-13 UNC threaded end, and hex socket drive in conformance with ANSI B18.3 specifications.

Installation Notes

Installation is performed by machinists, tool and die makers, or maintenance technicians using a 5/16-inch hex key or socket driver. Ensure the mating tapped hole is clean and sized for 1/2-13 UNC thread before installation. Do not use an impact driver on the hex socket, as this may damage the socket recess or over-torque the thread. Confirm shoulder bore clearance fits the 5/8-inch diameter within the tolerance required for the bearing or pivot application before final assembly.