S-92620A264 1"-14 x 4 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 150,000 psi tensile strength for reliable performance in high-stress applications
• Superior corrosion resistance provided by zinc yellow-chromate plating, extending service life in harsh environments
• Precise thread engagement with Class 2A thread fit and extra fine 1"-14 thread spacing for secure fastening in critical assemblies
• Optimized torque transmission through external hex drive and 1 1/2" head width for easy installation with standard tools
• Enhanced durability from Rockwell C33 hardness and Grade 8 classification, resisting deformation under heavy loads
• Versatile partial threading design allowing for both clamping and alignment functions in complex assemblies
• Regulatory compliance assurance meeting ASME B18.2.1, SAE J429, RoHS 3, and REACH standards for quality and safety

Professional Applications & Engineering Value

This Grade 8 hex head screw delivers critical engineering solutions for heavy machinery, structural frameworks, and industrial equipment where vibration resistance and long-term reliability are paramount. The extra fine 1"-14 thread configuration provides superior holding power in materials prone to stress cracking, while the zinc yellow-chromate plating creates a robust barrier against corrosion in outdoor or chemically aggressive environments. The partially threaded design offers precise clamping control, making it ideal for applications requiring both secure fastening and component alignment. With its 150,000 psi tensile strength and Rockwell C33 hardness, this fastener maintains structural integrity under extreme mechanical loads, reducing maintenance frequency and downtime in critical operations across manufacturing, construction, and heavy equipment sectors.

Specification Summary & Compliance

Manufactured to precise Class 2A thread fit tolerances with UNS thread type in inch system measurements. The fastener complies with ASME B18.2.1 and SAE J429 specifications for dimensional accuracy and mechanical properties. Environmental compliance is verified through RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) certifications, ensuring safe use across regulated industries. The combination of 4 1/2" length and 2 1/4" minimum thread length provides optimal engagement depth for various material thicknesses.