S-92562A142 1/4"-28 x 5/8" MS16998-42, NAS1351-4-10P 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 or outdoor industrial environments.
• Precision Class 3A thread fit provides tight tolerances and secure fastening, minimizing loosening from vibration.
• Fine thread spacing (UNRF) offers improved adjustment accuracy and better load distribution in critical assemblies.
• Fully threaded design allows for maximum grip length and uniform clamping force across the entire fastener.
• Hex socket drive (3/16") enables high-torque installation with standard tools, reducing installation time and stripping risk.
• Compliance with MS16998-42 and NAS1351-4-10P guarantees consistency and reliability for aerospace and defense applications.

Professional Applications & Engineering Value

Engineered for demanding environments, these socket head cap screws combine cadmium-plated alloy steel construction with Class 3A UNRF fine threads to address critical challenges in precision assemblies. The 160,000 PSI tensile strength and Rockwell C39 hardness ensure durability where vibration, high loads, or thermal cycling are concerns—common in aerospace, automotive, and heavy machinery. The fine thread spacing enhances fatigue resistance and provides finer adjustment in tight-tolerance applications, while the fully threaded body distributes stress evenly, reducing the risk of shear or stripping. Ideal for high-strength industrial fastening, these screws deliver reliable performance in engine components, structural frames, and precision equipment where failure is not an option.

Specification Summary & Compliance

This socket head cap screw features a 1/4"-28 UNRF thread with Class 3A fit for precision alignment, a length of 5/8", and a 3/16" hex drive. It meets MS16998-42 specifications and conforms to NAS1351-4-10P standards, ensuring adherence to aerospace and defense manufacturing requirements. The cadmium plating provides corrosion protection, while the alloy steel material and manufacturing process comply with industry norms for high-strength threaded fasteners.