S-92620A259 1"-14 x 1 3/4" 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 capability with Grade 8 classification and 150,000 psi tensile strength for reliable performance in high-stress environments
- Superior corrosion resistance provided by zinc yellow-chromate plating, extending service life in demanding industrial conditions
- Precise thread engagement with Class 2A fit and extra fine 1"-14 UNS threading for secure fastening in critical applications
- Optimized torque transmission through external hex drive and 1 1/2" head width for efficient installation with standard tools
- Enhanced durability from Rockwell C33 hardness steel construction, resisting deformation under heavy loads
- Full-threaded design ensuring maximum grip length and uniform stress distribution along the entire 1 3/4" length
- Regulatory compliance meeting ASME B18.2.1, SAE J429 standards with RoHS 3 and REACH environmental directives
Professional Applications & Engineering Value
These Grade 8 hex head screws deliver critical performance in heavy machinery, structural steel connections, and industrial equipment where vibration resistance and joint integrity are paramount. The extra fine 1"-14 UNS threading provides superior resistance to loosening under dynamic loads, while the zinc yellow-chromate plating creates a robust barrier against corrosion in harsh environments. Engineered with fully threaded design and external hex drive, these fasteners ensure maximum clamping force distribution and straightforward installation with common industrial tools. The combination of 150,000 psi tensile strength and Rockwell C33 hardness makes them ideal for critical applications in construction, manufacturing, and automotive sectors where fastener failure is not an option.
Specification Summary & Compliance
Manufactured to precise Class 2A thread fit tolerances with 1"-14 extra fine UNS threads and full threading along the 1 3/4" length. Complies with ASME B18.2.1 and SAE J429 specifications for dimensional accuracy and mechanical properties. Meets environmental standards including RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance for restricted substance control.
