S-92562A141 1/4"-28 x 1/2" MS16998-41, NAS1351-4-8P 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 protects against rust and degradation in harsh industrial environments.
• Precise Class 3A thread fit guarantees tight, secure connections with minimal backlash for vibration-resistant assemblies.
• Fine UNRF threading provides improved load distribution and better sealing capabilities compared to coarse threads.
• Rockwell C39 hardness offers excellent wear resistance, maintaining thread integrity through repeated installations.
• Standard hex drive design allows for easy installation with common tools while preventing cam-out in high-torque applications.
• Full threading along the entire length enables flexible positioning and consistent clamping force throughout the engagement.

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these socket head cap screws deliver critical performance advantages where precision and reliability are paramount. The cadmium-plated alloy steel construction provides essential corrosion protection for machinery exposed to moisture, chemicals, or outdoor elements. The UNRF fine thread configuration ensures superior vibration resistance in dynamic equipment, while the Class 3A thread fit maintains dimensional accuracy for consistent assembly operations. These fasteners are particularly valuable in aerospace, automotive, and heavy machinery applications where the combination of 160,000 PSI tensile strength and Rockwell C39 hardness prevents stripping and maintains clamp load under extreme operating conditions.

Specification Summary & Compliance

This socket head cap screw features precision 1/4"-28 UNRF fine threads with Class 3A fit for superior dimensional accuracy. Manufactured to meet MS16998-41 specifications where identified as NAS1351-4-8P, ensuring compliance with aerospace and defense industry standards. The inch system measurement, right-hand thread direction, and fully threaded design provide consistent performance across industrial applications. The cadmium plating offers environmental protection while maintaining the mechanical properties required for high-performance fastening solutions.