S-90002A129 1/2"-13 x 4" ASME B18.2.1, SAE J429 High-Strength Steel Hex Head Screws with Material Certification
High-Strength Steel Hex Head Screws with Material Certification
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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 demanding applications
- Superior corrosion protection through zinc yellow-chromate plating that extends service life in harsh environments
- Optimized thread engagement with 1/2"-13 UNC coarse threads providing superior holding power and faster installation
- High-strength Grade 8 classification ensures consistent performance meeting rigorous industrial standards
- Enhanced durability with Rockwell C33 hardness for resistance to wear and deformation under heavy loads
- Secure external hex drive allows for high-torque installation and easy removal with standard tools
- Precision manufacturing with Class 2A thread fit ensuring consistent quality and reliable performance
Professional Applications & Engineering Value
This Grade 8 hex head screw delivers exceptional engineering value through its high-tensile steel construction and specialized design features. The partially threaded configuration provides optimal clamping force distribution, making it ideal for structural connections where vibration resistance is critical. The zinc yellow-chromate plating creates a robust barrier against corrosion in industrial environments, extending service life while maintaining dimensional stability. With 1/2"-13 UNC coarse threading, these fasteners offer superior pull-out resistance in wood, metal, and composite materials. The external hex drive accommodates high installation torque requirements, ensuring secure fastening in heavy machinery, construction equipment, and structural steel applications where reliability cannot be compromised.
Specification Summary & Compliance
Manufactured to precise Class 2A thread fit tolerances with 1/2"-13 UNC coarse thread specifications. Complies with ASME B18.2.1 dimensional standards and SAE J429 material requirements for Grade 8 fasteners. Features Rockwell C33 hardness and 150,000 psi tensile strength certification. The zinc yellow-chromate plating provides corrosion resistance while maintaining compliance with industrial fastener specifications for reliable performance in demanding applications.
