S-90652A820 5/16"-18 Locknuts
Locknuts
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Basic Information
Dimension Parameters
Thread Parameters
Head Parameters
Material & Strength Parameters
Temperature & Environment Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Superior vibration resistance with nylon insert locking to maintain secure connections in high-motion environments
- Enhanced corrosion protection from black-coated steel for extended service life in harsh industrial conditions
- Reliable high-temperature performance with nylon insert rated up to 250°F (121°C) for thermal stability
- Easy installation and removal with standard external hex drive and coarse UNC threading
- Optimized space efficiency through extra-wide thin profile design for confined assembly areas
- Precise thread engagement with Class 2B fit ensuring consistent torque and load distribution
- Regulatory compliance assurance meeting RoHS 3 and REACH standards for global market acceptance
Professional Applications & Engineering Value
This 5/16"-18 UNC nylon insert lock nut delivers critical vibration resistance where machinery and equipment face constant dynamic loads. The black corrosion-resistant coated steel construction protects against rust and chemical exposure in manufacturing, automotive, and outdoor applications. Its extra-wide thin profile provides maximum clamping force in limited spaces while the coarse UNC threading enables quick assembly with reduced cross-threading risk. The nylon insert creates consistent friction locking that outperforms mechanical lock washers, maintaining bolt preload in high-vibration systems like motors, conveyors, and structural frameworks. Engineered for 250°F temperature rating, this locknut ensures reliability in thermal cycling environments without compromising the locking feature's integrity.
Specification Summary & Compliance
Manufactured to precise Class 2B thread fit standards with UNC coarse threading (5/16"-18) and right-hand direction. Dimensions include 9/16" width and 5/16" height with external hex drive. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material transparency. The locking mechanism utilizes nylon insert technology meeting industry standards for vibration-resistant fastening applications.
