S-92562A144 1/4"-28 x 1 1/4" MS16998-46, NAS1351-4-20P Mil. Spec. Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance through cadmium plating, extending service life in harsh industrial environments
• Exceptional tensile strength of 160,000 psi ensures reliable performance under high-stress applications
• Precision Class 3A thread fit provides consistent, vibration-resistant fastening in critical assemblies
• Rockwell C39 hardness rating maintains structural integrity and prevents thread deformation during installation
• Fine UNRF threading offers enhanced grip and superior load distribution compared to coarse threads
• 3/16" hex drive compatibility with standard tools enables quick installation and removal operations
• Full threading along 1¼" length allows for maximum adjustment flexibility in various material thicknesses

Professional Applications & Engineering Value

These cadmium-plated alloy steel socket head cap screws deliver critical performance advantages in demanding industrial applications where corrosion resistance and high-strength fastening are paramount. The Class 3A thread fit ensures precise engagement in aerospace, automotive, and heavy machinery assemblies, eliminating vibration-induced loosening that compromises system integrity. The UNRF fine thread configuration provides superior clamping force distribution, making these socket head cap screws ideal for thin-section materials and high-vibration environments. With 160,000 psi tensile strength and Rockwell C39 hardness, they withstand extreme mechanical stresses while the cadmium plating protects against chemical degradation, significantly reducing maintenance cycles and replacement costs in corrosive operating conditions.

Specification Summary & Compliance

Manufactured to exacting Class 3A thread tolerances with 1/4"-28 UNRF fine threading and right-hand thread direction. These socket head cap screws comply with MS16998-46 specifications and meet NAS1351-4-20P requirements for aerospace and defense applications. The fully threaded 1¼" length provides consistent engagement while maintaining dimensional accuracy per industrial fastener standards. The cadmium-plated surface treatment ensures compliance with industry corrosion protection requirements for extended service life in challenging environments.