S-90630A209 1 1/4"-7 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance with nylon insert locking that maintains secure fastening under dynamic loads
• Exceptional temperature performance with nylon insert rated for continuous service up to 220°F
• Heavy-duty strength certification through Grade 8 steel construction for high-torque applications
• Reliable thread engagement with Class 2B thread fit ensuring consistent installation and removal
• Optimized for industrial environments featuring coarse UNC threads that resist fouling and cross-threading
• Enhanced installation efficiency through standard external hex design for conventional wrench access
• Full regulatory compliance meeting REACH and RoHS 3 standards for global industrial use

Professional Applications & Engineering Value

This Grade 8 steel nylon insert locknut delivers critical vibration resistance in demanding industrial applications where loosening under dynamic loads poses significant safety risks. The 1 1/4"-7 UNC coarse thread configuration provides superior engagement in high-vibration environments common in heavy machinery, construction equipment, and automotive assemblies. The nylon insert locking mechanism creates consistent friction against mating threads without damaging surfaces, making it ideal for applications requiring repeated disassembly and reassembly. With its 220°F temperature rating and external hex drive, this locknut maintains reliability in elevated temperature conditions while ensuring compatibility with standard installation tools. The combination of high-strength steel construction and precision Class 2B thread fit addresses the fundamental need for durable, reusable fastening solutions in critical load-bearing assemblies.

Specification Summary & Compliance

This heavy-duty locknut features precise Class 2B thread fit with 1 1/4"-7 UNC coarse threading and right-hand thread direction. Manufactured to Grade 8 strength specifications with standard hex profile measuring 2 1/64" width and 1 41/64" height. The product fully complies with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) environmental standards, ensuring suitability for regulated industrial applications worldwide.