S-92190A115 3/8"-16 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 load-bearing capacity with 110,000 PSI tensile strength for reliable performance in high-stress applications
- Superior corrosion resistance and durability through Grade 5 steel construction with Rockwell C21 hardness
- Secure anti-loosening performance with left-hand UNC coarse threading for specialized machinery and rotating equipment
- Easy installation and removal using standard tools thanks to the external hex drive and 9/16" head width
- Precise thread engagement with Class 2A fit ensuring consistent performance and vibration resistance
- Full-length thread coverage for maximum grip strength across the entire 1 3/4" length
- Regulatory compliance assurance meeting ASME B18.2.1, RoHS 3, and REACH standards for industrial safety
Professional Applications & Engineering Value
This Grade 5 steel hex head screw with left-hand UNC coarse threading provides critical engineering solutions for applications where reverse rotation forces are present. The 3/8"-16 UNC thread configuration combined with Class 2A fit ensures precise engagement in machinery, automotive systems, and industrial equipment where vibration-induced loosening is a concern. The external hex drive design allows for high-torque installation using standard tools, while the fully threaded 1 3/4" length maximizes clamping force distribution. Engineered to ASME B18.2.1 standards, this fastener delivers reliable performance in demanding environments where left-hand thread applications prevent unintended disassembly in rotating systems.
Specification Summary & Compliance
This hex head screw features precise Class 2A thread fit with 3/8"-16 UNC coarse threading in left-hand direction. Manufactured to ASME B18.2.1 specifications and SAE J429 Grade 5 requirements, it maintains dimensional accuracy throughout its 1 3/4" length. The fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety standards are met for industrial applications.
