S-91309A845 3/4"-10 x 2 1/2" ASME B18.2.1, ASTM A307 Low-Strength Steel Hex Head Screws
Low-Strength 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 60,000 psi ensures reliable performance in demanding applications, reducing the risk of fastener failure.
- Zinc plating finish provides superior corrosion resistance, extending the service life of the fastener in harsh environments.
- Coarse UNC thread with Class 2A fit allows for quicker assembly and better vibration resistance compared to fine threads.
- External hex drive design offers high torque capability and easy installation with standard tools, improving efficiency.
- Full threading along the 2 1/2" length ensures maximum grip and uniform stress distribution in connected materials.
- Rockwell B69 hardness provides excellent durability and resistance to wear during repeated use.
- Compliance with ASME B18.2.1 and ASTM A307 guarantees consistent quality and interchangeability in industrial assemblies.
Professional Applications & Engineering Value
This 3/4"-10 UNC hex head screw is engineered for heavy-duty industrial applications where reliability is critical. The steel construction and zinc plating address common issues like corrosion and material fatigue, making it ideal for structural connections, machinery assembly, and construction projects. The coarse thread design ensures secure fastening even in materials prone to vibration, while the external hex drive allows for high-torque installation without stripping. By meeting ASME B18.2.1 and ASTM A307 standards, it provides consistent performance in load-bearing scenarios, reducing maintenance needs and enhancing operational safety.
Specification Summary & Compliance
This fastener features a Class 2A thread fit for precise dimensional accuracy and easy assembly. It adheres to UNC thread standards with a 3/4"-10 coarse thread size and is manufactured in compliance with ASME B18.2.1 and ASTM A307 specifications. Additionally, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring it is free from hazardous substances and suitable for global industrial use.
