S-90630A110 1/4"-20 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through nylon insert locking that maintains secure fastening in high-motion environments
• Exceptional strength and durability with Grade 8 steel construction for heavy-duty industrial applications
• Reliable high-temperature performance with nylon insert rated up to 220°F for consistent locking in thermal cycling conditions
• Easy installation and removal with standard external hex drive design compatible with common wrench tools
• Precise thread engagement with UNC coarse threading and Class 2B fit ensuring smooth assembly and consistent torque values
• Environmental compliance assurance meeting RoHS 3 and REACH standards for global industrial use
• Optimized dimensional stability with 7/16" width and 5/16" height providing standard hex nut profile for uniform load distribution

Professional Applications & Engineering Value

This Grade 8 steel locknut with nylon insert delivers critical vibration resistance in demanding industrial environments where fastener loosening can compromise system integrity. The UNC coarse thread design ensures rapid assembly while maintaining Class 2B thread fit precision for consistent clamping force. Engineered for machinery, automotive, and heavy equipment applications, the external hex drive facilitates straightforward installation with standard tools. The nylon insert maintains locking effectiveness up to 220°F maximum temperature, making it suitable for engines, motors, and industrial equipment experiencing thermal expansion and vibration stresses. This combination of high-strength material and advanced locking technology provides reliable fastening solutions where safety and performance cannot be compromised.

Specification Summary & Compliance

This locknut features 1/4"-20 UNC coarse threading with Class 2B thread fit tolerances, right-hand thread direction, and standard 7/16" width × 5/16" height dimensions. Manufactured to Grade 8 strength classification standards with external hex drive configuration. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for global industrial applications requiring strict material compliance.