S-92620A284 3/8"-16 x 2 3/8" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws
High-Strength Grade 8 Steel Hex Head Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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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 through zinc yellow-chromate plating, extending service life in harsh environments
- Optimized torque transmission with external hex drive design for secure installation and removal
- Enhanced thread engagement with Class 2A thread fit ensuring consistent fastening performance
- Reduced cross-threading risk through UNC coarse threading for faster assembly in industrial settings
- Grade 8 reliability with Rockwell C33 hardness for maximum durability under extreme conditions
- Versatile partial threading allowing for both clamping and alignment functions in complex assemblies
Professional Applications & Engineering Value
This Grade 8 hex head screw delivers critical engineering solutions where high tensile strength and corrosion resistance are paramount. The 3/8"-16 UNC coarse thread configuration provides superior grip in soft materials and faster installation in production environments, while the zinc yellow-chromate plating creates a protective barrier against oxidation and chemical exposure. The partially threaded design offers precise clamping control in machinery assembly, structural steel connections, and heavy equipment manufacturing. With 150,000 psi tensile strength and Rockwell C33 hardness, this fastener maintains integrity under vibration and dynamic loads, making it ideal for automotive, construction, and industrial machinery applications where failure is not an option.
Specification Summary & Compliance
Manufactured to exacting Class 2A thread fit tolerances with 3/8"-16 UNC coarse threading and 2 3/8" length. Complies with ASME B18.2.1 and SAE J429 Grade 8 specifications for dimensional accuracy and mechanical properties. Meets environmental standards including RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance for safe use in regulated industries.
