Value Collection R57600624 Shoulder Screw 5/8 in 18-8 Ss

Product Description

The VALUE COLLECTION R57600624 is a hex socket shoulder screw manufactured from 18-8 stainless steel with an uncoated finish. The shoulder measures 0.625 inches in diameter and 4 inches in length, providing a precise bearing surface for rotating or sliding components such as linkages, pivot points, and jig fixtures. The threaded portion is 1/2-13 UNC, and drive engagement is through a 5/16-inch hex socket. At 0.4 pounds, this fastener is suited for medium-duty mechanical assemblies where corrosion resistance and dimensional accuracy are required. Machinists, maintenance technicians, and tool-and-die tradespeople commonly specify this type of fastener in production and repair environments.

This shoulder screw is used in applications that demand a controlled-diameter shank for bearing surfaces, guide pins, or pivot hardware. Typical installations include machine fixtures, jigs, tooling plates, automation equipment linkages, and assembly line components. The 18-8 stainless steel construction makes it appropriate for environments with moderate moisture exposure or where mild chemical resistance is needed. The uncoated surface finish maintains the as-manufactured tolerance on the shoulder diameter.

Key Features

• 0.625-inch shoulder diameter for precise bearing and pivot surface fit
• 4-inch shoulder length accommodates deeper fixture and linkage assemblies
• 1/2-13 UNC thread provides broad nut and tapped-hole compatibility
• 5/16-inch hex socket drive for torquing in confined spaces with an Allen key or hex bit
• 18-8 stainless steel construction offers corrosion resistance in mild service environments
• Uncoated finish preserves shoulder diameter tolerance for close-fit applications

Compatibility

Designed as an OEM-style replacement or direct-specification shoulder screw for mechanical assemblies requiring a 5/8-inch shoulder diameter, 4-inch shoulder length, and 1/2-13 UNC threaded engagement.

Installation Notes

Installation is typically performed by machinists or maintenance technicians using a 5/16-inch hex key or socket bit driver. Ensure the mating bore diameter matches the 0.625-inch shoulder closely to achieve the intended bearing fit; do not force the shoulder into an undersized bore. Thread the 1/2-13 UNC shank into a properly tapped hole or mating nut and tighten to the assembly specification. Avoid overtightening, which can distort the shoulder and compromise the bearing surface.