S-90002A119 3/8"-16 x 2 1/2" ASME B18.2.1, SAE J429 High-Strength Steel Hex Head Screws with Material Certification

Key Features & Benefits at a Glance

• Exceptional load-bearing capability with 150,000 PSI tensile strength for demanding industrial applications
• Superior corrosion resistance through zinc yellow-chromate plating that protects against harsh environmental conditions
• Reliable high-strength performance meeting Grade 8 standards with Rockwell C33 hardness for consistent durability
• Optimized installation efficiency featuring external hex drive design for secure tool engagement and torque application
• Precision thread compatibility with UNC coarse threading and Class 2A fit ensuring proper mating with standard components
• Versatile partial threading allowing for both secure fastening and adjustable positioning in assembly applications
• Industry compliance assurance manufactured to ASME B18.2.1 and SAE J429 specifications for guaranteed quality and interoperability

Professional Applications & Engineering Value

This Grade 8 hex head screw delivers critical engineering solutions for heavy machinery, structural assemblies, and industrial equipment where failure is not an option. The 3/8"-16 UNC coarse thread configuration provides excellent resistance to vibration loosening while maintaining quick assembly characteristics. The zinc yellow-chromate plating creates a protective barrier that significantly extends service life in corrosive environments, reducing maintenance frequency and replacement costs. With partial threading design, engineers gain flexibility in applications requiring both clamping force and smooth shank sections. These high-strength fasteners are engineered to withstand extreme mechanical stresses in construction, automotive, and manufacturing sectors where reliable 150,000 PSI tensile strength is paramount for safety and performance.

Specification Summary & Compliance

This heavy-duty hex head screw features precise Class 2A thread fit tolerance for consistent mating performance and 3/8"-16 UNC coarse thread specifications. Manufacturing complies with ASME B18.2.1 dimensional standards and SAE J429 material requirements for Grade 8 fasteners. The product maintains 2-1/2" length with 1" minimum thread length and 9/16" head width for standardized installation. The zinc yellow-chromate plating provides RoHS and REACH compliant corrosion protection while meeting industrial safety and quality regulations for high-strength fastening applications.