S-90306A301 3/8"-16 x 2" Left-Hand Threaded 18-8 Stainless Steel Hex Head Screws
Left-Hand Threaded 18-8 Stainless Steel Hex Head Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and long-term reliability
- Exceptional mechanical strength offering 70,000 psi tensile strength and Rockwell B70 hardness for heavy-load applications
- Secure, precise fastening ensured by Class 2A thread fit and fully threaded 2" length, minimizing loosening risks
- Left-hand thread design provides specialized functionality for reverse-thread applications and safety-critical assemblies
- Easy installation and removal with external hex drive and 9/16" head width, compatible with standard tools
- Broad industrial compliance meeting RoHS 3 and REACH regulations for safe, sustainable usage
- Reliable UNC coarse threading ensures quick assembly and strong holding power in various materials
Professional Applications & Engineering Value
Engineered for demanding scenarios, this 3/8"-16 UNC left-hand thread hex head screw addresses critical needs in machinery, automotive, and construction sectors where reverse threading prevents unintentional loosening from counter-clockwise motion. The 18-8 stainless steel material delivers excellent corrosion resistance, reducing maintenance in humid or chemical-exposed settings. With a coarse thread profile and Class 2A fit, it offers rapid installation and consistent clamping force, while the external hex drive allows high-torque application without slippage. Its fully threaded 2" length ensures maximum grip in thick assemblies, making it a reliable choice for vibration-prone equipment and safety-focused fastening systems.
Specification Summary & Compliance
This screw adheres to UNC coarse thread standards with Class 2A thread fit for precise dimensional accuracy. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring environmental and safety standards for industrial use. Manufacturing specifications include a thread size of 3/8"-16, left-hand direction, and full threading along the 2" length, providing reliable performance in accordance with industry threading norms.
