S-92562A273 1/4"-20 x 1 1/4" MS16997-63, NAS1352-4-20P Mil. Spec. Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 160,000 PSI ensures reliable performance under extreme loads and vibrations
• Superior corrosion resistance from cadmium plating extends service life in harsh industrial environments
• Precise Class 3A thread fit provides consistent engagement and reduces the risk of cross-threading during assembly
• High hardness rating (Rockwell C39) maintains thread integrity and prevents stripping under high torque applications
• Hex socket drive design allows for high-torque installation in confined spaces with standard 3/16" tools
• Fully threaded construction offers maximum grip length and uniform clamping force across the entire fastener
• Military-grade compliance with MS16997-63 specifications guarantees consistent quality for critical applications

Professional Applications & Engineering Value

These cadmium-plated alloy steel socket head cap screws deliver exceptional engineering value in demanding applications where failure is not an option. The combination of 160,000 PSI tensile strength and Rockwell C39 hardness provides reliable fastening in high-vibration environments such as heavy machinery, aerospace assemblies, and automotive systems. The Class 3A thread fit with UNRC coarse threads ensures quick assembly while maintaining precision alignment, reducing installation time without compromising joint integrity. The hex socket drive accommodates high torque requirements in space-constrained applications, while the cadmium plating offers superior corrosion protection against industrial elements. These fasteners are engineered to solve common industrial challenges including thread stripping, corrosion-induced failure, and vibration-induced loosening.

Specification Summary & Compliance

This 1/4-20 socket head cap screw features precision Class 3A thread fit with UNRC coarse threads and right-hand thread direction. The fastener maintains dimensional accuracy with a 1-1/4" length, 3/8" head diameter, and 3/16" hex drive. Manufactured to meet MS16997-63 specifications where identified as NAS1352-4-20P, ensuring consistent quality and performance. The cadmium-plated alloy steel construction complies with industrial standards for high-strength fastening applications requiring reliable performance under demanding conditions.