S-91286A319 1/2"-13 x 1" 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 provided by zinc-flake coating, extending service life in harsh industrial environments.
- High hardness rating of Rockwell C33 ensures excellent wear resistance and durability under repetitive use.
- Easy installation and removal with external hex drive and coarse UNC threads for quick assembly in various materials.
- Full threading design offers consistent clamping force along the entire length for secure fastening.
- Precision manufacturing with Class 2A thread fit guarantees consistent quality and reliable performance.
- Compliance with industry standards including ASME B18.2.1 and SAE J429 ensures interoperability and safety.
Professional Applications & Engineering Value
This Grade 8 hex head screw delivers exceptional engineering value for heavy-duty industrial applications where failure is not an option. The zinc-flake coated steel construction provides superior corrosion protection, solving the common problem of fastener degradation in demanding environments. With its 1/2"-13 UNC coarse thread and external hex drive, installation becomes efficient even in tight spaces, while the fully threaded design ensures maximum engagement and vibration resistance. These high-strength fasteners are engineered to withstand extreme loads in construction equipment, automotive assemblies, and industrial machinery, providing reliable performance where standard fasteners would fail. The combination of 150,000 psi tensile strength and Rockwell C33 hardness makes these screws ideal for critical connections in structural applications and heavy machinery.
Specification Summary & Compliance
This fastener features precision Class 2A thread fit with UNC coarse thread spacing measuring 1/2"-13. Manufactured to meet ASME B18.2.1 and SAE J429 Grade 8 specifications, ensuring dimensional accuracy and performance reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making it suitable for use in regulated industries and international markets.
