S-92190A135 1/2"-13 x 1 3/4" ASME B18.2.1, SAE J429 Left-Hand Threaded Medium-Strength Grade 5 Steel Hex Head Screws
Left-Hand Threaded 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 110,000 PSI ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
- Left-hand UNC coarse threading provides secure fastening in applications requiring reverse-thread engagement, preventing loosening under counter-clockwise motion.
- Grade 5 steel construction with Rockwell C21 hardness offers superior durability and resistance to wear in demanding industrial environments.
- Class 2A thread fit ensures smooth assembly and consistent engagement, minimizing cross-threading and installation errors.
- Fully threaded design allows for maximum grip length and uniform load distribution across the entire fastener.
- External hex drive enables easy installation and removal with standard tools, improving maintenance efficiency.
- Compliance with ASME B18.2.1 and SAE J429 standards guarantees dimensional accuracy and interoperability with other components.
Professional Applications & Engineering Value
This Grade 5 steel hex head screw is engineered for industrial settings where reverse-thread mechanisms are critical, such as rotating machinery, conveyor systems, and equipment with left-hand threaded components. The left-hand UNC coarse thread prevents unintended loosening caused by standard rotational forces, enhancing safety in dynamic applications. Made from high-strength steel and heat-treated to Rockwell C21 hardness, it withstands heavy loads and repetitive stress without deformation. The fully threaded 1 3/4" length ensures consistent clamping force, while the external hex drive simplifies installation in confined spaces. Ideal for maintenance, assembly, and OEM applications, this fastener delivers reliable performance in automotive, manufacturing, and heavy machinery sectors.
Specification Summary & Compliance
This screw features a 1/2"-13 UNC coarse thread with Class 2A thread fit for precise dimensional tolerance. It complies with ASME B18.2.1 and SAE J429 specifications, ensuring consistent quality and interchangeability. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting environmental and safety regulations for industrial use.
