S-91268A444 1/2"-13 x 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 tensile strength of 150,000 psi ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
- Grade 8 classification and Rockwell C33 hardness provide superior durability and resistance to wear, extending service life in demanding environments.
- Partial threading design offers enhanced grip and vibration resistance, improving assembly stability and safety.
- Class 2A thread fit with UNC coarse threads allows for easier, faster installation and reduced cross-threading issues.
- External hex drive and hex head enable secure, high-torque tightening with standard tools, streamlining maintenance and installation.
- Compliance with ASME B18.2.1 and SAE J429 standards guarantees consistent quality and interchangeability for industrial applications.
- RoHS 3 and REACH compliance ensures environmental safety and regulatory adherence for global supply chains.
Professional Applications & Engineering Value
Engineered for heavy-duty industrial applications, this Grade 8 hex head screw delivers robust performance where reliability is critical. The steel construction combined with 150,000 psi tensile strength and Rockwell C33 hardness addresses common challenges like material fatigue and mechanical stress in machinery, construction, and automotive assemblies. The 1/2"-13 UNC coarse thread and partial threading enhance clamping force and resistance to loosening under vibration, making it ideal for structural connections and equipment subjected to dynamic loads. By meeting ASME B18.2.1 specifications, it ensures precise dimensional accuracy and compatibility, reducing downtime and maintenance costs in demanding environments.
Specification Summary & Compliance
This screw features a 1/2"-13 UNC coarse thread with Class 2A thread fit for standard tolerance and easy assembly. It complies with ASME B18.2.1 and SAE J429 standards, ensuring consistent manufacturing quality. Additionally, it is RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant, meeting environmental and safety regulations for industrial use.
