S-92865A350 1/2"-20 x 3/4" 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 strength and reliability with Grade 5 steel construction and 120,000 psi tensile strength for demanding industrial applications.
- Superior corrosion resistance provided by the zinc plating, extending service life in harsh environments.
- Precise and secure fastening ensured by the UNF fine thread with Class 2A fit, minimizing the risk of loosening under vibration.
- High durability and wear resistance from the Rockwell C25 hardness, maintaining fastener integrity over time.
- Easy installation and removal with the external hex drive and standard 3/4" head width, compatible with common tools.
- Full thread engagement along the 3/4" length for maximum grip and load distribution in assembled components.
- Compliance with major industry standards including ASME B18.2.1, ensuring consistent quality and performance.
Professional Applications & Engineering Value
This Grade 5 steel hex head screw is engineered to address critical challenges in heavy-duty industrial applications, such as machinery assembly, structural frameworks, and automotive systems. The UNF fine threading and Class 2A thread fit provide excellent vibration resistance and precise alignment, reducing the risk of joint failure. The zinc plating offers reliable protection against corrosion, which is essential for equipment exposed to moisture or chemicals. With a high tensile strength of 120,000 psi and Rockwell C25 hardness, this fastener maintains its integrity under high stress and repetitive loads, ensuring long-term reliability and safety in demanding environments.
Specification Summary & Compliance
This screw features a 1/2"-20 UNF fine thread with Class 2A dimensional accuracy for consistent fit and performance. It is manufactured to meet ASME B18.2.1 specifications and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safety and sustainability in industrial use.
