S-90630A206 1 1/2"-6 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through nylon insert technology that maintains secure locking under dynamic loads
• High-temperature performance with nylon insert functionality preserved up to 220°F for demanding industrial environments
• Exceptional strength reliability with Grade 8 steel construction supporting heavy-duty applications and high-torque requirements
• Quick installation efficiency with coarse UNC threads and Class 2B fit enabling faster assembly in industrial settings
• Enhanced durability through external hex drive design providing superior torque transmission and tool engagement
• Regulatory compliance assurance meeting REACH and RoHS 3 standards for safe industrial use worldwide
• Optimal dimensional stability with precise 2 3/16" width and 1 39/64" height ensuring consistent performance across applications

Professional Applications & Engineering Value

This Grade 8 steel nylon insert locknut delivers critical vibration resistance in heavy machinery, construction equipment, and automotive assemblies where UNC coarse threads enable rapid installation without compromising security. The nylon insert locking mechanism creates consistent friction that prevents loosening under extreme vibration and thermal cycling, maintaining clamp load integrity up to 220°F. Engineered with Class 2B thread fit and external hex drive, this industrial fastener provides reliable performance in mining equipment, agricultural machinery, and structural applications where vibration-induced failure is a primary concern. The combination of high-strength material and precision manufacturing ensures long-term reliability in the most demanding operating conditions.

Specification Summary & Compliance

Manufactured to precise Class 2B thread tolerances with 1 1/2"-6 UNC coarse thread specifications, this locknut maintains dimensional accuracy across production batches. The component fully complies with REACH (EC 1907/2006) regulations regarding substance restrictions and meets RoHS 3 (2015/863/EU) directives for hazardous materials limitation. Constructed from Grade 8 steel with standardized external hex drive configuration, this locknut delivers consistent performance according to industrial fastener specifications for heavy-duty applications requiring reliable vibration resistance and thermal stability.