S-99851A103 8-32 MS21046C08, NASM21046 Locknuts
Locknuts
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Basic Information
Dimension Parameters
Thread Parameters
Head Parameters
Material & Strength Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Superior vibration resistance through Flex-Top locking technology that maintains clamp force in high-stress environments
- Enhanced corrosion protection with silver-plated 18-8 stainless steel construction for extended service life
- Precise thread engagement with Class 3B thread fit ensuring reliable performance in critical applications
- Industry-standard compliance meeting MS21046C08 and NASM21046 specifications for aerospace and industrial use
- Optimal torque transmission through external hex drive design for secure installation and removal
- Environmental regulation compliance with RoHS 3 and REACH standards for global manufacturing acceptance
- Coarse UNC threading providing quick assembly and reduced cross-threading risks in maintenance operations
Professional Applications & Engineering Value
Engineered for demanding aerospace and industrial applications, these MS21046C08 certified locknuts solve critical fastening challenges where vibration resistance and corrosion protection are paramount. The silver-plated 18-8 stainless steel construction provides dual protection against galvanic corrosion while maintaining structural integrity in extreme environments. The Flex-Top locking mechanism creates consistent friction along the thread engagement, preventing loosening under continuous vibration without damaging mating threads. With UNC coarse threading and Class 3B thread fit, these locknuts ensure rapid installation and precise alignment in maintenance-heavy operations, reducing assembly time and improving operational safety. The external hex drive design accommodates standard tools for consistent torque application across diverse field service conditions.
Specification Summary & Compliance
This 8-32 UNC locknut features precision Class 3B thread fit tolerances with coarse thread spacing for optimal engagement. Manufactured to MS21046C08 and NASM21046 specifications with right-hand threading and standard external hex drive configuration. Dimensions include 11/32" width and 15/64" height for consistent form factor. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations ensures global manufacturing acceptance and chemical safety compliance.
