S-90715A170 1/2"-20 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through the nylon insert, ensuring reliable locking under dynamic loads and preventing loosening in high-stress environments.
• Excellent corrosion resistance with 316 stainless steel construction, ideal for harsh industrial, marine, and chemical exposures without compromising integrity.
• High-temperature durability with the nylon insert rated up to 220°F, maintaining locking performance in elevated temperature applications.
• Precise thread engagement with Class 2B UNF fine threads, offering smooth installation and secure fit for critical assemblies.
• Easy installation and removal using the standard external hex drive, compatible with common tools for efficient maintenance and assembly.
• Environmental and regulatory compliance with RoHS 3 and REACH standards, ensuring safe use in regulated industries and global markets.
• Dimensional accuracy with a 3/4" width and 19/32" height, providing consistent performance and interchangeability in standard applications.

Professional Applications & Engineering Value

This 1/2"-20 UNF nylon insert locknut in 316 stainless steel is engineered to address common industrial challenges such as vibration-induced loosening and corrosion. The nylon insert creates consistent friction on the fine UNF threads, effectively resisting shock and dynamic loads in machinery, automotive, and aerospace systems. Its Class 2B thread fit ensures precise alignment and reduces the risk of cross-threading, enhancing assembly reliability. The external hex drive allows for quick installation with standard wrenches, streamlining maintenance in tight spaces. Ideal for applications requiring high-temperature resistance up to 220°F and exposure to corrosive elements, this locknut provides long-term performance in demanding environments like chemical processing, marine equipment, and heavy-duty manufacturing.

Specification Summary & Compliance

This locknut features a 1/2"-20 UNF fine thread with Class 2B thread fit for precise dimensional accuracy and smooth engagement. Manufactured from 316 stainless steel with a standard hex profile and right-hand thread direction, it complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material restrictions adherence. The nylon insert locking mechanism is rated for temperatures up to 220°F, supporting consistent performance in various industrial applications.