S-92562A279 1/4"-20 x 1 3/4" MS16997-65, NAS1352-4-28P 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 in demanding applications.
• Superior corrosion resistance provided by cadmium plating protects against rust and degradation, extending service life in harsh industrial environments.
• Precise Class 3A thread fit guarantees tight, secure fastening with minimal play, enhancing assembly integrity and vibration resistance.
• High hardness rating (Rockwell C39) delivers excellent wear resistance, maintaining thread integrity and drive features through repeated use.
• 3/16" hex drive design allows for high-torque installation with standard tools, facilitating efficient assembly and maintenance operations.
• Partially threaded shank provides optimal grip length for clamped materials while minimizing unnecessary thread engagement.
• Compliance with MS16997-65 (NAS1352-4-28P) ensures consistent quality and interchangeability for military and aerospace applications.

Professional Applications & Engineering Value

These cadmium-plated alloy steel socket head cap screws deliver critical performance advantages in precision engineering applications. The combination of 160,000 PSI tensile strength and Rockwell C39 hardness provides exceptional resistance to both static and dynamic loading conditions, making them ideal for high-vibration environments in machinery, aerospace assemblies, and heavy equipment. The 1/4-20 UNC coarse threads with Class 3A fit ensure rapid installation while maintaining precise alignment in critical joints. The cadmium plating offers superior corrosion protection without compromising dimensional accuracy, while the 3/16" hex drive accommodates standard industrial tools for efficient maintenance access in confined spaces. These fasteners solve common industrial challenges including thread stripping, corrosion-induced failure, and installation inconsistency.

Specification Summary & Compliance

This socket head cap screw features 1/4-20 UNC coarse threads with Class 3A precision fit according to unified thread standards. The fastener meets MS16997-65 specifications NAS1352-4-28P for dimensional accuracy and mechanical properties. Manufacturing complies with inch system measurements, featuring a partially threaded design with minimum thread length of 1-1/4" and overall length of 1-3/4". The cadmium-plated alloy steel construction provides environmental protection while maintaining 160,000 PSI tensile strength and Rockwell C39 hardness for demanding industrial applications.