S-91236A607 5/16"-18 x 6" 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
- High tensile strength of 60,000 psi ensures reliable performance in demanding applications, reducing the risk of fastener failure.
- Zinc plating provides superior corrosion resistance, extending the screw's service life in harsh industrial environments.
- Class 2A thread fit and UNC coarse threading offer easier, faster assembly and reduced cross-threading risk.
- External hex drive and hex head design allow for high-torque installation with common tools, speeding up projects.
- Partially threaded shank provides unthreaded grip length for better clamping force in joint assemblies.
- Rockwell B69 hardness delivers excellent durability and resistance to wear during repeated use.
- Compliance with ASME B18.2.1, RoHS 3, and REACH guarantees quality, safety, and environmental standards are met for global supply chains.
Professional Applications & Engineering Value
This 5/16"-18 UNC hex head screw is engineered to solve critical fastening challenges in industrial applications such as machinery assembly, structural frameworks, and heavy equipment. The steel construction combined with a zinc plated finish provides robust protection against rust and corrosion, essential for outdoor or high-moisture environments. Its coarse thread and Class 2A thread fit ensure quick, secure installation, minimizing assembly time and labor costs. The partially threaded design concentrates clamping force where needed, preventing joint loosening under vibration. Ideal for B2B procurement, this screw meets rigorous ASME B18.2.1 standards, offering reliability in construction, manufacturing, and maintenance projects where tensile strength and longevity are paramount.
Specification Summary & Compliance
This screw adheres to precise dimensional tolerances, including a Class 2A thread fit and UNC coarse thread specifications per ASME standards. It is manufactured in compliance with ASME B18.2.1 and material specifications per ASTM A307, ensuring consistent quality. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting safe and environmentally responsible use in global markets.
