S-92562A148 5/16"-18 x 2 1/2" MS16997-86, NAS1352-5-40P Mil. Spec. Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 160,000 PSI ensures reliable performance under high-stress conditions, reducing the risk of fastener failure.
• Superior corrosion resistance from cadmium plating extends service life in harsh industrial environments, minimizing maintenance needs.
• Precise Class 3A thread fit provides excellent engagement and vibration resistance, enhancing assembly integrity.
• High hardness rating (Rockwell C39) offers increased wear resistance, maintaining thread integrity through repeated use.
• Hex socket drive design allows for easy installation in confined spaces with standard tools, improving installation efficiency.
• Coarse UNRC thread spacing enables quicker assembly and better performance in materials prone to stripping.
• Partially threaded shank concentrates strength where needed and allows for precise clamping force control.

Professional Applications & Engineering Value

This cadmium-plated alloy steel socket head cap screw delivers critical performance in demanding applications where high tensile strength and corrosion resistance are paramount. The Class 3A thread fit ensures tight tolerances for vibration-prone assemblies in machinery, automotive, and aerospace components. Engineered with coarse UNRC threads, it provides superior holding power in softer materials and faster installation times. The hex drive socket head design accommodates high torque applications while maintaining a low profile for space-constrained environments. Meeting MS16997-86/NAS1352-5-40P specifications, this fastener is ideal for critical joints requiring reliable, long-term performance under extreme mechanical stress.

Specification Summary & Compliance

This socket head cap screw features precision Class 3A thread fit with 5/16"-18 UNRC coarse threads and partial threading over a 1-3/8" minimum length. Manufactured from alloy steel with cadmium plating for corrosion protection, it maintains dimensional accuracy per MS16997-86 specifications where identified as NAS1352-5-40P. The fastener delivers 160,000 PSI tensile strength and Rockwell C39 hardness for demanding industrial applications requiring consistent performance and compliance with established aerospace and industrial standards.