Value Collection 225043PR Shoulder Screw 5/16 in 4140 Alloy Steel

Product Description

The VALUE COLLECTION 225043PR is a hex socket shoulder screw machined from 4140 alloy steel, designed for use in precision mechanical assemblies where tight dimensional tolerances and reliable fastening are required. The shoulder measures 5/16 inches in diameter and 1-3/4 inches in length, providing a precise bearing surface for pivot points, linkages, and guided components. The 1/4-20 UNC threaded end secures the fastener in tapped holes. A 5/32 inch hex socket drive and 7/16 inch head diameter allow installation with standard hex keys. This fastener meets ASME/ANSI B18.3, ASTM F835, and IFI 124 standards, making it suitable for applications where material and dimensional compliance are required.

Shoulder screws of this type are used across a wide range of industrial and mechanical applications, including jigs and fixtures, punch and die assemblies, pivot linkages, and printed circuit board standoff applications. The 4140 alloy steel construction offers good strength and wear resistance for moderate-load bearing applications. Machinists, millwrights, and maintenance technicians typically install these fasteners in production tooling, automation equipment, and mechanical assemblies. The minimum order quantity for this part is 10 pieces, sold individually per package unit.

Key Features

• 5/16 inch shoulder diameter provides a precision bearing and pivot surface
• 1-3/4 inch shoulder length suits assemblies requiring extended guided travel
• 4140 alloy steel construction for strength and wear resistance
• 1/4-20 UNC thread for compatibility with standard tapped holes
• 5/32 inch hex socket drive for installation with standard hex keys
• Meets ASME/ANSI B18.3, ASTM F835, and IFI 124 standards

Compatibility

Designed as a standard shoulder screw for use in mechanical assemblies, jigs, fixtures, and tooling applications requiring a 5/16 inch shoulder diameter and 1/4-20 UNC threaded end.

Installation Notes

Install using a 5/32 inch hex key, ensuring the tapped receiving hole meets the 1/4-20 UNC thread specification. De-energize and lock out all equipment before servicing any mechanical assembly containing this fastener. Do not use impact drivers on socket head shoulder screws, as over-torquing can damage the drive socket or distort the shoulder geometry. Verify shoulder fit in the mating bore before full installation to ensure proper clearance for pivot or bearing applications.