S-90392A033 5/16"-18 Locknuts
Locknuts
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Basic Information
Dimension Parameters
Thread Parameters
Head Parameters
Material & Strength Parameters
Installation & Application Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Superior vibration resistance through center-lock distorted thread design, preventing loosening in high-stress applications
- Exceptional durability and corrosion protection with zinc-plated steel construction meeting Grade 8 strength requirements
- Reliable reverse-thread security with left-hand UNC coarse threading for specialized industrial applications
- Precise fit and easy installation with Class 2B thread fit and standard external hex drive profile
- Heavy-duty performance in demanding environments with 1/2" width and 17/64" height dimensions
- Environmental compliance assurance with RoHS 3 and REACH SVHC regulations for safe industrial use
- Optimized for industrial machinery where standard right-hand threads would be unsuitable or hazardous
Professional Applications & Engineering Value
This Grade 8 left hand locknut with center-lock distorted thread technology addresses critical vibration-induced failure points in rotating machinery and equipment where reverse threading is essential. The zinc-plated steel construction provides superior corrosion resistance while maintaining the heavy-duty strength required for industrial applications. The UNC coarse thread pattern ensures rapid assembly and disassembly while the distorted thread section creates permanent friction locking without compromising the Class 2B thread fit. Engineered specifically for applications requiring counter-rotational security, this locknut prevents catastrophic failures in conveyor systems, mixing equipment, and machinery with left-hand threaded components exposed to constant vibration and dynamic loads.
Specification Summary & Compliance
This 5/16"-18 UNC left hand locknut features Class 2B thread fit with coarse thread spacing and center-lock distorted thread design. Manufactured to Grade 8 strength standards with standard hex profile (1/2" width, 17/64" height) and external hex drive style. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations for environmental safety and restricted substances.
