S-97190A210 1"-14 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through cotter pin locking mechanism that prevents loosening under extreme dynamic loads
• Exceptional corrosion protection with zinc plating that extends service life in harsh industrial environments
• Precision thread engagement with UNEF extra fine threads providing more contact points for secure fastening
• High-strength performance meeting Grade 5 standards for demanding applications up to 120,000 PSI
• Easy installation and maintenance with standard external hex drive compatible with common tools
• Reliable safety locking designed for 3/16" cotter pins with optimized slot dimensions for secure retention
• Environmental compliance assurance meeting both REACH and RoHS 3 standards for industrial safety

Professional Applications & Engineering Value

This Grade 5 castle locknut with zinc-plated steel construction addresses critical safety concerns in high-vibration environments where fastener failure could lead to catastrophic equipment damage. The 1"-14 UNEF extra fine thread configuration provides superior thread engagement compared to standard coarse threads, distributing load more evenly across the fastener interface. The cotter pin locking mechanism offers positive mechanical locking that cannot be compromised by vibration, temperature fluctuations, or dynamic loading conditions. Particularly valuable in industrial machinery, automotive systems, and heavy equipment applications, this castle locknut ensures reliable performance where conventional nuts might fail. The Class 2B thread fit guarantees consistent installation torque values and predictable clamping force behavior throughout the fastener's service life.

Specification Summary & Compliance

This castle locknut features 1"-14 UNEF extra fine threads with Class 2B fit for precise engagement and consistent torque performance. Manufactured to Grade 5 strength standards (equivalent to SAE J995 Grade 5), the nut provides minimum proof load of 85,000 PSI and tensile strength of 120,000 PSI. Dimensions include 1-1/2" width across flats and 55/64" height with cotter pin slots measuring minimum 0.241" depth and 0.24" width for 3/16" cotter pins. The product is fully compliant with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) environmental regulations, ensuring safe use in industrial applications worldwide.