Value Collection R63004229 Shoulder Screw 3/8 in 18-8 Ss

Product Description

The VALUE COLLECTION R63004229 is an 18-8 stainless steel shoulder screw designed for precision mechanical assemblies requiring a controlled-diameter bearing or pivot surface. The shoulder measures 3/8 inch in diameter and 1-3/4 inches in length, providing an accurate cylindrical body for bushings, bearings, linkages, and pivoting components. The threaded end is 5/16-18 UNC, driven by a 3/16-inch hex socket. The 18-8 stainless steel construction resists corrosion in wet, chemical, or outdoor environments. Machinists, maintenance technicians, and industrial assembly professionals install this type of fastener in fixtures, jigs, and machine components where consistent shoulder geometry is critical.

This shoulder screw is suited for applications in light to medium-duty mechanical assemblies across industrial, commercial, and maintenance environments. Typical use cases include bearing retention, linkage pivots, spacer applications, and any assembly where a smooth unthreaded shank must interface with a mating bore. The 18-8 stainless steel grade is appropriate for general corrosion-resistant service and is commonly specified in food processing, marine-adjacent, and washdown environments where mild corrosion resistance is needed without the cost of 316-grade alloys.

Key Features

• Shoulder diameter of 3/8 inch (0.3750 inch decimal) for precise bore-fit applications
• Shoulder length of 1-3/4 inches provides extended bearing surface for linkage and pivot assemblies
• 5/16-18 UNC threaded end for secure clamping into tapped holes
• 3/16-inch hex socket drive for clean torque application in confined spaces
• 18-8 stainless steel construction offers corrosion resistance in wet or chemically active environments
• Sold individually per package with a minimum order quantity of 10 units

Compatibility

Designed as a standard shoulder screw for use in any mechanical assembly requiring a 3/8-inch shoulder diameter, 1-3/4-inch shoulder length, and 5/16-18 UNC threaded engagement with a hex socket drive interface.

Installation Notes

Installation is performed by threading the 5/16-18 UNC end into a pre-tapped hole using a 3/16-inch hex key or T-handle driver. Ensure the mating bore diameter closely matches the 0.3750-inch shoulder for proper fit and alignment. De-energize or lock out any equipment before fastener replacement in live machinery per applicable OSHA lockout-tagout procedures. Do not overtighten — consult the assembly drawing or engineering specification for target clamp load, as no specific torque value is provided with this fastener.