S-92865A178 1/2"-13 x 1 7/8" ASME B18.2.1, 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 high-stress applications, reducing the risk of fastener failure.
- Zinc plating provides superior corrosion resistance, extending the screw's service life in harsh industrial environments.
- Grade 5 steel construction with Rockwell C25 hardness offers excellent durability and resistance to wear and deformation.
- Partially threaded design allows for precise clamping force and improved joint stability in assembled components.
- UNC coarse thread with Class 2A fit ensures easy, quick assembly and reliable engagement in a wide range of materials.
- External hex drive and hex head facilitate straightforward installation and removal with standard tools, enhancing efficiency.
- Compliance with ASME, SAE, RoHS 3, and REACH standards guarantees quality, safety, and environmental responsibility for professional use.
Professional Applications & Engineering Value
This Grade 5 hex head screw is engineered to address common industrial challenges, such as vibration loosening and corrosion-induced failure. Made from high-strength steel and finished with zinc plating, it resists rust and wear in demanding settings like machinery assembly, structural frameworks, and automotive systems. The partially threaded UNC coarse thread design ensures optimal load distribution and secure fastening, minimizing the need for frequent maintenance. Ideal for heavy-duty applications, this screw provides reliable performance where tensile strength and durability are critical, supporting efficient operations in construction, manufacturing, and equipment repair.
Specification Summary & Compliance
This screw features precise Class 2A thread fit and adheres to UNC thread standards with a size of 1/2"-13. It meets manufacturing specifications under ASME B18.2.1 and SAE J429, ensuring dimensional accuracy and performance reliability. Additionally, it is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting safe and environmentally responsible use in industrial fastening.
