S-96345A290 1/4"-20 MS17830-4C, NASM17830 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance with a nylon insert that maintains a secure, non-loosening grip in high-motion environments
• Excellent corrosion resistance provided by 18-8 stainless steel construction, ensuring longevity in harsh or outdoor conditions
• High-temperature durability with the nylon insert rated for continuous use up to 250°F, ideal for industrial machinery and engines
• Precise thread engagement with Class 3B fit and UNC coarse threads for quick assembly and reliable torque performance
• Easy installation and removal using standard external hex drive, compatible with common wrenches for efficient maintenance
• Compliance with stringent standards including MS17830-4C and NASM17830, guaranteeing consistent quality and interchangeability
• Environmental and safety assurance through REACH and RoHS 3 compliance, making it suitable for regulated industries

Professional Applications & Engineering Value

This 1/4"-20 nylon insert locknut is engineered to address critical challenges in industrial and mechanical assemblies where vibration and dynamic loads can compromise fastener integrity. The nylon locking element creates consistent friction against the mating bolt, effectively resisting loosening under stress without damaging threads. Made from 18-8 stainless steel, it offers reliable corrosion resistance for applications in automotive, aerospace, and heavy machinery. The coarse UNC thread and Class 3B fit ensure rapid installation and high clamping force, while the external hex design allows for straightforward torque application. Ideal for engine mounts, conveyor systems, and structural frameworks, this locknut provides a reusable, vibration-resistant solution that reduces maintenance frequency and enhances operational safety.

Specification Summary & Compliance

This locknut features a 1/4"-20 UNC coarse thread with Class 3B precision fit, ensuring tight tolerances and reliable performance. It meets MS17830-4C and NASM17830 specifications for dimensional accuracy and mechanical properties. The product is fully compliant with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) directives, confirming its suitability for use in environments with strict environmental and health safety requirements.