S-91286A453 3/4"-10 x 1 1/2" 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 protection through zinc-flake coating that extends service life in harsh industrial environments
- Optimized torque transmission with external hex drive design for secure installation and removal
- Enhanced thread engagement through UNC coarse threading that resists vibration-induced loosening
- Consistent dimensional accuracy with Class 2A thread fit ensuring proper mating with standard nuts
- Maximum material strength from Grade 8 classification with Rockwell C33 hardness for durability
- Full regulatory compliance meeting ASME B18.2.1, SAE J429, RoHS 3, and REACH standards
Professional Applications & Engineering Value
These Grade 8 hex head screws deliver critical engineering value in demanding applications where failure is not an option. The zinc-flake coated steel construction provides superior corrosion resistance compared to conventional platings, making them ideal for outdoor equipment, industrial machinery, and structural assemblies exposed to environmental elements. The 3/4"-10 UNC coarse thread design ensures rapid installation while maintaining vibration resistance, significantly reducing maintenance cycles in vibrating equipment. With fully threaded construction and external hex drive, these fasteners offer maximum clamping force distribution and efficient torque application, solving common challenges of joint integrity in heavy machinery, construction equipment, and transportation applications where reliability under dynamic loads is paramount.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 2A thread fit tolerance and UNC coarse thread specifications. These hex head screws comply with ASME B18.2.1 and SAE J429 manufacturing standards for Grade 8 fasteners. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring they meet current environmental safety requirements for industrial use worldwide.
