S-90636A119 1"-14 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through precision distorted thread center lock technology, preventing loosening in high-stress environments
• Exceptional durability with Grade 8 steel construction, ensuring reliable performance under heavy loads and extreme conditions
• Enhanced corrosion protection from black-oxide coating, extending service life in industrial and outdoor applications
• Precise thread engagement with Class 2B fit and UNS fine threads (1"-14), providing secure fastening and reducing cross-threading risks
• Easy installation and removal using standard 1-1/2" external hex drive, compatible with common industrial tools
• Compliance with safety standards including REACH and RoHS 3, ensuring environmental responsibility and workplace safety
• Optimized for heavy-duty applications with right-hand threading and standard profile, suitable for machinery, equipment, and structural assemblies

Professional Applications & Engineering Value

This Grade 8 black-oxide steel locknut delivers critical vibration resistance in demanding industrial settings where constant motion and shock loads compromise fastener integrity. The distorted thread center lock mechanism creates consistent interference along the mating thread, eliminating the need for secondary locking devices and reducing assembly time. Engineered with UNS fine threads (1"-14) and Class 2B thread fit, it maintains precise tolerances for secure connections in heavy machinery, construction equipment, and transportation systems. The black-oxide surface treatment provides moderate corrosion protection while maintaining dimensional stability, making it ideal for applications exposed to weather, oils, and industrial chemicals. Its external hex drive design ensures compatibility with standard wrenches, streamlining maintenance procedures in manufacturing plants, automotive assembly, and infrastructure projects.

Specification Summary & Compliance

This locknut features Class 2B thread fit per UNS standards with 1"-14 fine thread spacing and right-hand direction. Manufacturing complies with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) environmental regulations. Dimensions include 1-1/2" width and 55/64" height with standard hex profile. The Grade 8 strength classification ensures consistent performance in heavy-duty mechanical applications requiring high clamp load retention.