S-95030A430 2"-12 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through cotter pin locking mechanism that prevents loosening in high-stress applications
• Enhanced corrosion protection with zinc-plated steel construction for extended service life in harsh environments
• Precise thread engagement with Class 2B fit ensuring reliable fastening and consistent performance
• Extra fine thread design providing superior load distribution and increased clamping force
• Easy installation and maintenance with standard external hex drive and 3" width for standard tool compatibility
• Positive mechanical locking via 3/8" cotter pin slot that delivers fail-safe security for critical assemblies
• Environmental compliance meeting REACH and RoHS 3 standards for safe industrial use

Professional Applications & Engineering Value

This heavy-duty castle locknut with 2"-12 extra fine thread is engineered to solve critical vibration-induced loosening problems in demanding industrial applications. The zinc-plated steel construction provides excellent corrosion resistance while maintaining high tensile strength, making it ideal for automotive, construction, and heavy machinery applications where reliability is paramount. The cotter pin locking mechanism offers positive mechanical security that surpasses conventional locking methods, ensuring assemblies remain intact under extreme vibration and dynamic loads. The UN thread standard with Class 2B fit guarantees precise mating with mating components, while the external hex drive design allows for straightforward installation using standard tools, reducing assembly time and maintenance costs in industrial settings.

Specification Summary & Compliance

This locknut features Class 2B thread fit with 2"-12 extra fine UN threads and right-hand thread direction. The manufacturing specifications include a 3" hex width, 1 23/32" height, and accommodates 3/8" cotter pins with minimum slot dimensions of 0.485" depth and 0.43" width. The product is fully compliant with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) environmental standards, ensuring safe usage in industrial applications while meeting international quality and safety requirements.