S-92620A265 1"-14 x 5 1/2" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with Grade 8 classification and 150,000 psi tensile strength for reliable performance in high-stress applications
• Superior corrosion protection through zinc yellow-chromate plating that withstands harsh industrial environments
• Precise thread engagement with Class 2A thread fit and extra fine 1"-14 thread spacing for secure fastening in critical assemblies
• Optimized strength-to-weight ratio featuring Rockwell C33 hardness and partial threading for balanced structural integrity
• Easy installation and removal with standard 1 1/2" external hex head design compatible with common tools
• Regulatory compliance assurance meeting ASME B18.2.1, SAE J429, RoHS 3, and REACH standards for global industrial use
• Enhanced vibration resistance through extra fine thread design that maintains clamp load under dynamic conditions

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these Grade 8 hex head screws deliver critical performance where failure is not an option. The extra fine 1"-14 thread configuration provides superior resistance to vibration loosening in machinery, heavy equipment, and structural assemblies. The zinc yellow-chromate plating creates a protective barrier against corrosion in outdoor or chemically aggressive environments, significantly extending service life. With partial threading and 150,000 psi tensile strength, these fasteners offer optimal clamping force distribution while maintaining material integrity under extreme loads. The external hex drive and substantial 1 1/2" head width ensure reliable torque application during installation, reducing the risk of stripping and ensuring consistent assembly quality across production runs.

Specification Summary & Compliance

This heavy-duty hex head screw features precise Class 2A thread fit with UNS extra fine threading (1"-14) and 5 1/2" length with 2 1/4" minimum thread length. Manufactured from high-strength steel with Rockwell C33 hardness, the fastener complies with ASME B18.2.1 and SAE J429 Grade 8 specifications. The product meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance requirements, ensuring environmental regulatory adherence for international industrial applications.