S-90640A160 1/2"-20 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 through nylon insert locking technology that maintains secure fastening under dynamic loads
- Enhanced corrosion protection with zinc-plated steel construction for extended service life in harsh environments
- High-temperature performance with nylon insert rated up to 220°F for reliable operation in demanding applications
- Precise thread engagement with Class 2B thread fit ensuring consistent torque values and reduced cross-threading risks
- Industry-standard compatibility featuring UNF fine threads (1/2"-20) for seamless integration with existing equipment
- Easy installation and removal with standard external hex drive and 3/4" width for conventional wrench tool access
- Regulatory compliance assurance meeting RoHS 3 and REACH standards for global industrial applications
Professional Applications & Engineering Value
This nylon insert locknut delivers critical vibration resistance for machinery, automotive, and industrial equipment where secure fastening is paramount. The zinc-plated steel construction provides durable corrosion protection, while the UNF fine thread design (1/2"-20) ensures precise engagement in high-stress applications. The nylon insert locking mechanism maintains clamping force even under extreme vibration, preventing costly downtime from loosened connections. With a 220°F temperature rating, this locknut performs reliably in engine compartments, manufacturing equipment, and other thermally challenging environments where standard fasteners might fail. The external hex drive and standard profile enable quick installation with common tools, reducing maintenance time and labor costs.
Specification Summary & Compliance
This locknut features Class 2B thread fit per UNF standards with precise 1/2"-20 fine thread spacing, ensuring optimal engagement and torque consistency. Manufactured to industrial specifications with 3/4" width and 19/32" height dimensions. The product is fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant (including 224 SVHC substances as of 06/10/2022), meeting the highest environmental and safety standards for industrial fastener applications worldwide.
