S-94967A472 5/16"-18 x 1 1/4" ASME B18.2.1, ASTM B117, SAE J429 Medium-Strength Grade 5 Steel Hex Head Screws
Medium-Strength Grade 5 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 120,000 psi ensures reliable performance in demanding industrial applications, reducing the risk of fastener failure.
- Black corrosion-resistant coating on steel provides enhanced durability and longevity, minimizing maintenance needs in harsh environments.
- Grade 5 classification guarantees high strength and hardness (Rockwell C25), offering consistent performance for heavy-duty use.
- UNC coarse threading with Class 2A fit allows for quick assembly and secure fastening, improving installation efficiency.
- External hex drive design enables easy tightening with standard tools, reducing labor time and effort.
- Full threading ensures maximum grip and load distribution along the entire length, enhancing joint stability.
- Compliance with ASME, ASTM, and SAE standards assures quality and interoperability, meeting rigorous industry requirements.
Professional Applications & Engineering Value
This 5/16"-18 UNC Grade 5 hex head screw is engineered to address common industrial challenges, such as corrosion and mechanical stress. Made from black corrosion-resistant coated steel, it withstands exposure to moisture and chemicals, extending service life in applications like machinery assembly, construction, and automotive systems. The coarse UNC threading and Class 2A thread fit provide reliable engagement in various materials, reducing the risk of stripping and ensuring secure connections. With a tensile strength of 120,000 psi and Rockwell C25 hardness, it handles high-load scenarios without deformation, making it ideal for structural frameworks and equipment that demand durability and precision.
Specification Summary & Compliance
This fastener adheres to precise dimensional standards, including Class 2A thread fit and UNC coarse thread specifications, ensuring consistent performance. It meets manufacturing norms such as ASME B18.2.1, ASTM B117 for corrosion testing, and SAE J429 for material grade. Additionally, it is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmental and safety standards in global supply chains.
