S-94830A520 5/16"-18 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through Flex-Top locking technology, ensuring long-term joint integrity in high-stress environments.
• Enhanced corrosion protection with cadmium-plated steel construction, extending service life in harsh industrial conditions.
• Space-saving thin profile design (17/64" height) for applications with limited clearance without compromising strength.
• Reliable, reusable locking performance thanks to the flex-top design that maintains consistent clamping force after multiple installations.
• Precise Class 2B thread fit for smooth assembly and consistent torque values, reducing installation time and errors.
• Wide compatibility with 5/16"-18 UNC coarse threads, making it ideal for standard industrial equipment and machinery.
• Easy installation and removal with external hex drive, allowing use with common wrenches for efficient maintenance.

Professional Applications & Engineering Value

This 5/16"-18 UNC thin Flex-Top locknut addresses critical challenges in industrial assembly where vibration loosening can compromise safety and performance. The cadmium-plated steel offers excellent resistance to oxidation and wear, while the flex-top locking mechanism distributes elastic force evenly across the threads, creating a persistent barrier against rotational slackening. Its thin profile is engineered for compact spaces in machinery, automotive, and electrical enclosures, ensuring reliable fastening without bulk. By combining Class 2B thread fit with a coarse UNC thread, it enables quick alignment and secure engagement, reducing the risk of cross-threading and assembly delays in high-volume production lines.

Specification Summary & Compliance

This locknut features a 5/16"-18 UNC coarse thread with Class 2B thread fit for consistent dimensional accuracy, and is manufactured from cadmium-plated steel for durability. It complies with relevant ASME/ANSI standards for inch-series fasteners and meets RoHS and REACH environmental directives, ensuring safe use in various industrial applications. The external hex drive (1/2" width) and right-hand thread direction adhere to common assembly practices, providing reliable performance in vibration-prone settings.