Value Collection R57600670 Shoulder Screw 3/4 in 18-8 Ss

Product Description

The VALUE COLLECTION R57600670 is a shoulder screw machined from 18-8 stainless steel, designed for applications requiring a precision-ground cylindrical shoulder to serve as a shaft, pivot, or spacer within an assembly. The shoulder measures 0.75 inches in diameter and 4.5 inches in length, providing a smooth bearing surface for rotating or sliding components. Drive engagement is via a 3/8-inch hex socket, allowing controlled installation torque without marring adjacent surfaces. The uncoated finish retains the corrosion-resistance characteristic of 18-8 stainless alloy. Machinists, millwrights, and maintenance technicians install this type of fastener in fixtures, jigs, dies, and mechanical assemblies across industrial and commercial environments.

This shoulder screw is suited for applications where a hardened or precision shaft surface is needed at a fixed location within a bolted assembly. Common uses include pivot points in linkages, guide pins in tooling fixtures, and bearing shaft applications in light to moderate load environments. The 5/8-11 UNC thread engages standard tapped holes in steel and aluminum components. Its stainless steel construction makes it appropriate for environments with moisture exposure or where ferrous fasteners are not acceptable.

Key Features

• 0.75-inch shoulder diameter provides a precision bearing and pivot surface
• 4.5-inch shoulder length accommodates deep assembly stacks and extended pivot spans
• 18-8 stainless steel construction offers corrosion resistance without coating
• 5/8-11 UNC thread engages standard tapped holes in a wide range of materials
• 3/8-inch hex socket drive allows torque application with standard allen keys or hex bits
• 1-inch head diameter and 0.5-inch head height provide positive seating against mating surfaces

Compatibility

Designed as an OEM-style and aftermarket replacement shoulder screw for industrial fixtures, jigs, tooling assemblies, and mechanical linkages requiring a 3/4-inch shoulder diameter and 5/8-11 UNC thread engagement.

Installation Notes

Installation should be performed by a qualified machinist or maintenance technician using a 3/8-inch hex key or socket bit. Ensure the tapped receiving hole is clean, properly threaded to 5/8-11 UNC, and free of debris before threading the screw in by hand to verify alignment. De-energize and lock out any machinery before installing or removing shoulder screws in live equipment. Do not exceed the torque capacity of the stainless steel fastener, as 18-8 alloy is susceptible to galling — apply an appropriate anti-seize compound when threading into stainless or aluminum tapped holes.