S-99638A103 8-32 MS21045-08 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 design that maintains secure fastening in high-stress environments.
- Enhanced corrosion protection with cadmium yellow-chromate plating, extending service life in harsh industrial conditions.
- Precision thread engagement with Class 3B fit ensuring reliable performance and reduced risk of loosening under load.
- Wide compatibility with UNC coarse threads and right-hand direction for easy installation in various assemblies.
- Standard external hex drive allowing for straightforward installation and removal with common tools.
- Compliance with military standards (MS21045-08) guaranteeing quality and consistency for critical applications.
- Compact dimensions (11/32" width, 1/4" height) enabling use in space-constrained designs without sacrificing strength.
Professional Applications & Engineering Value
This 8-32 UNC locknut is engineered to address common challenges in industrial and aerospace settings, where vibration and environmental factors can compromise fastener integrity. The flex-top locking mechanism provides consistent clamping force, preventing spontaneous loosening in dynamic systems like machinery, automotive assemblies, and electronic enclosures. Made from cadmium yellow-chromate plated steel, it offers excellent resistance to corrosion, reducing maintenance needs in humid or chemically exposed environments. Its coarse thread design ensures quick installation and robust performance, making it ideal for applications requiring rapid assembly and disassembly while adhering to military specification MS21045-08 for reliability in mission-critical operations.
Specification Summary & Compliance
This locknut features a Class 3B thread fit for precise tolerance, with UNC coarse threads and right-hand direction. It meets MS21045-08 specifications, ensuring adherence to rigorous manufacturing standards. The product complies with common industry requirements, including potential RoHS and REACH directives, for safe and sustainable use in global markets.
