S-91268A723 9/16"-12 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 tensile strength of 150,000 psi ensures reliable performance in high-stress industrial applications, reducing the risk of fastener failure.
- Grade 8 steel construction with Rockwell C33 hardness provides superior durability and resistance to wear, extending service life in demanding environments.
- Coarse UNC threads offer faster installation and better debris resistance, making them ideal for rough or dirty conditions.
- Class 2A thread fit guarantees precise dimensional accuracy and easy assembly without compromising on holding power.
- Fully threaded design allows for maximum grip and adjustability across the entire length, enhancing versatility in various mounting scenarios.
- External hex drive and hex head enable secure tightening with standard tools, improving efficiency in maintenance and assembly operations.
- Compliance with ASME B18.2.1 and SAE J429 standards ensures consistent quality and interoperability in regulated industrial settings.
Professional Applications & Engineering Value
This Grade 8 hex head screw is engineered to address critical challenges in heavy-duty applications, such as machinery assembly, construction, and automotive systems. Made from high-strength steel and featuring coarse UNC threads, it resists vibration loosening and corrosion, reducing maintenance downtime. The fully threaded design and external hex drive simplify installation in tight spaces, while the 150,000 psi tensile strength ensures it can handle extreme loads without deformation. Ideal for industrial fastening where reliability and compliance with ASME B18.2.1 standards are paramount, this screw delivers long-term performance in harsh environments.
Specification Summary & Compliance
This screw adheres to precise dimensional tolerances, including Class 2A thread fit and UNC thread standards, ensuring consistent performance. It meets ASME B18.2.1 and SAE J429 Grade 8 specifications for strength and manufacturing quality. Additionally, it is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmentally responsible and safe industrial use.