S-90306A290 3/8"-16 x 3/4" Left-Hand Threaded 18-8 Stainless Steel Hex Head Screws
Left-Hand Threaded 18-8 Stainless 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 corrosion resistance thanks to 18-8 stainless steel construction, ideal for harsh environments and long-term reliability.
- Superior tensile strength of 70,000 psi ensures dependable performance in high-stress applications and heavy-duty assemblies.
- Precise Class 2A thread fit guarantees smooth installation and secure fastening, reducing assembly time and improving joint integrity.
- Left-hand thread direction provides specialized functionality for applications requiring reverse-threading to prevent loosening from counter-clockwise motion.
- Rockwell B70 hardness offers excellent durability and resistance to wear, extending the screw's service life.
- Fully threaded design maximizes grip and load distribution along the entire length for enhanced holding power.
- Compliance with RoHS 3 and REACH regulations ensures environmental safety and meets global industry standards for restricted substances.
Professional Applications & Engineering Value
This 3/8"-16 UNC left-hand hex head screw is engineered to address critical challenges in industrial settings where standard right-hand threads may loosen under specific rotational forces. Made from 18-8 stainless steel, it provides outstanding corrosion resistance, making it suitable for marine, chemical processing, and outdoor equipment. The coarse UNC thread and Class 2A fit ensure quick, reliable engagement in materials like metals and plastics, reducing cross-threading risks. With an external hex drive and robust 70,000 psi tensile strength, it delivers high torque capability and fatigue resistance, ideal for machinery, conveyors, and automotive assemblies requiring left-hand thread fasteners to secure components against vibration-induced rotation.
Specification Summary & Compliance
This screw features a 3/8"-16 UNC coarse thread with Class 2A thread fit for standard dimensional accuracy and ease of assembly. It is manufactured from 18-8 stainless steel with a length of 3/4 inch, fully threaded design, and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to environmental and safety standards for industrial use.
