S-97135A422 7/16"-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 with nylon insert locking that maintains secure fastening in high-motion environments
- High-temperature performance with nylon insert rated up to 220°F for demanding industrial applications
- Exceptional strength and durability from Grade 8 steel construction, suitable for heavy-duty mechanical assemblies
- Precise thread engagement with Class 2B UNF fine threading ensuring reliable, consistent installation
- Corrosion-resistant black-oxide finish providing enhanced protection in various operating conditions
- Standard external hex drive for easy installation using common tools while maintaining secure locking capability
- Full regulatory compliance with REACH and RoHS 3 standards for safe, environmentally conscious manufacturing
Professional Applications & Engineering Value
This Grade 8 heavy-duty nylon insert locknut delivers critical vibration resistance in demanding industrial environments where fastener loosening can compromise system integrity. The black-oxide steel construction combined with the nylon insert locking mechanism creates a reliable solution for machinery, automotive, and equipment applications subjected to constant motion and thermal cycling. The UNF fine threading (7/16"-20) provides superior thread engagement compared to coarse threads, while the Class 2B thread fit ensures consistent installation torque and clamping force. Engineered to withstand temperatures up to 220°F, this external hex locknut maintains its locking performance in elevated temperature environments common in industrial settings.
Specification Summary & Compliance
This locknut features 7/16"-20 UNF fine threading with Class 2B thread fit for precision engagement. Dimensions include 5/8" width and 29/64" height with right-hand thread direction. Manufactured from black-oxide steel to Grade 8 strength classification with external hex drive style. The product is fully compliant with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) environmental standards, ensuring regulatory adherence for industrial applications.
