S-93126A210 3"-12 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance with nylon insert locking technology, ensuring reliable performance in high-stress environments
• Exceptional durability in high-temperature applications, withstanding up to 250°F without compromising locking integrity
• Enhanced thread engagement through extra fine thread spacing, providing secure fastening and reduced risk of loosening
• Optimized load distribution with an extra-wide thin profile, minimizing stress concentrations for extended service life
• Corrosion-resistant protection from black-phosphate steel coating, ideal for harsh industrial conditions
• Precise fit and interchangeability with Class 2B thread fit and UN thread standards, ensuring compatibility across systems
• Compliance with global safety standards including REACH and RoHS 3, meeting rigorous industrial and environmental requirements

Professional Applications & Engineering Value

This 3"-12 extra fine thread nylon insert locknut is engineered to address critical challenges in heavy-duty and high-vibration applications, such as industrial machinery, construction equipment, and automotive assemblies. The nylon insert creates consistent friction and resists loosening under dynamic loads, while the black-phosphate steel material offers excellent corrosion resistance, reducing maintenance needs. With an extra-wide thin profile, it distributes clamping force evenly, preventing joint failure in demanding environments. The extra fine thread design enhances grip strength and is ideal for precision adjustments, making it a reliable choice for engineers seeking long-term vibration resistance and durability in ASTM Grade C compliant fasteners.

Specification Summary & Compliance

This locknut features a Class 2B thread fit with UN extra fine threads (3"-12), ensuring precise dimensional accuracy and interchangeability. Manufactured to ASTM Grade C standards for consistent strength and performance, it complies with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) regulations, guaranteeing safety and environmental responsibility. The external hex drive style facilitates easy installation with standard tools, supporting reliable use in industrial applications.