S-92562A147 5/16"-18 x 7/8" MS16997-79, NAS1352-5-14P Mil. Spec. Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 160,000 psi ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
• Superior corrosion resistance from cadmium plating extends service life in harsh industrial environments, minimizing maintenance and replacement costs.
• Precise Class 3A thread fit provides tighter tolerances for secure, vibration-resistant assemblies, enhancing overall joint integrity.
• High hardness (Rockwell C39) offers excellent wear resistance, maintaining thread form and drive integrity through repeated use.
• Coarse UNRC threads enable faster installation and better performance in materials prone to stripping or galling.
• Standard hex socket drive allows for high torque application with common tools, ensuring easy and efficient assembly.
• Full threading along the 7/8" length provides consistent clamping force and flexibility in various engagement depths.

Professional Applications & Engineering Value

This cadmium-plated alloy steel socket head cap screw is engineered to address critical challenges in heavy-duty industrial settings, such as machinery, automotive, and aerospace assemblies. The combination of 160,000 psi tensile strength and Class 3A thread fit ensures reliable performance under dynamic loads and vibrations, preventing loosening and maintaining clamp load. The cadmium plating provides a durable barrier against corrosion, making it suitable for environments exposed to moisture, chemicals, or temperature variations. Its coarse UNRC threads facilitate quick installation and reduce cross-threading risks, while the hex socket drive enables high torque transfer without slippage. Ideal for applications demanding high-strength fasteners with consistent dimensional accuracy, this screw enhances assembly longevity and reduces downtime in critical operations.

Specification Summary & Compliance

This socket head cap screw features a 5/16"-18 thread size with Class 3A thread fit per UNRC standards, ensuring precise dimensional tolerances for secure fastening. The fully threaded design and coarse thread spacing provide consistent engagement. It complies with MS16997-79 specifications, equivalent to NAS1352-5-14P, meeting rigorous aerospace and industrial standards for material quality and performance. The cadmium-plated alloy steel construction adheres to common industry requirements for corrosion resistance and mechanical properties, supporting use in regulated environments where reliability and specification conformity are paramount.