Value Collection R57600526 Shoulder Screw 5/16 in 1/4-20

Product Description

The VALUE COLLECTION R57600526 is a shoulder screw machined from 18-8 stainless steel with an uncoated finish. The shoulder measures 5/16 inches in diameter and 1/4 inches in length, providing a precision bearing surface for rotating or sliding components. The 1/4-20 UNC threaded section locks the fastener in place once the shoulder is fully seated. Drive engagement is via a 5/32 inch hex socket. This type of shoulder screw is installed by machinists, maintenance technicians, and mechanical assemblers working on jigs, fixtures, linkages, and precision assemblies where a ground cylindrical surface is needed to guide motion or locate a part.

This shoulder screw suits light-duty mechanical assemblies, fixture builds, and machine maintenance applications. The 18-8 stainless steel construction resists corrosion in mildly wet or chemical-exposed environments, making it appropriate for food-processing fixtures, marine hardware, and general industrial equipment. The compact 1/4 inch shoulder length is suited to thin-plate applications where a short precision journal is sufficient. Sold individually with a minimum order quantity of 5 units per order.

Key Features

• 18-8 stainless steel construction provides corrosion resistance in mildly aggressive environments
• 5/16 inch shoulder diameter with 0.3125 inch decimal precision for accurate bore fitting
• 1/4-20 UNC thread standard for reliable engagement with standard threaded holes
• 5/32 inch hex socket drive for internal wrenching in confined spaces
• 7/16 inch head diameter and 7/32 inch head height provide a low-profile seating surface
• Uncoated finish maintains dimensional accuracy without coating buildup

Compatibility

Designed as a standard shoulder screw for mechanical assemblies, jigs, fixtures, and linkages requiring a 5/16 inch shoulder diameter and 1/4-20 UNC threaded engagement.

Installation Notes

Installation is performed by machinists or maintenance technicians using a 5/32 inch hex key or hex socket driver. The mating bore should be sized to match the 5/16 inch shoulder diameter for proper fit and function. Ensure the threaded hole is clean and free of debris before driving the screw. Do not overtighten beyond the point of full shoulder seating, as the shoulder rather than the thread provides the primary locating function.