S-90543A120 M6 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance with Spring-Stop locking technology, ensuring secure fastening in high-motion environments without loosening.
• Excellent corrosion resistance from 18-8 stainless steel material, providing long-term durability in harsh or outdoor industrial settings.
• Reliable and reusable design allows for multiple installations without loss of locking performance, reducing replacement costs and downtime.
• Precise Class 6H thread fit ensures smooth assembly and consistent torque application, minimizing the risk of cross-threading or stripping.
• Easy installation and removal with an external hex drive, compatible with standard wrenches for efficient maintenance and adjustments.
• Compliance with environmental standards including RoHS 3 and REACH, making it safe for use in regulated industries and eco-conscious projects.
• Coarse M6 x 1mm metric threading offers quick engagement and strong holding power, ideal for general-purpose and heavy-duty applications.

Professional Applications & Engineering Value

This M6 spring-stop locknut is engineered to address common challenges in dynamic industrial environments, such as machinery vibration and thermal cycling, which can cause standard nuts to loosen over time. The Spring-Stop locking mechanism provides consistent resistance to rotational forces, maintaining clamp load without the need for additional locking washers or adhesives. Made from 18-8 stainless steel, it offers inherent corrosion resistance, making it suitable for applications in automotive, aerospace, and marine sectors where exposure to moisture or chemicals is a concern. The external hex design and Class 6H thread fit ensure easy integration with existing metric fastener systems, reducing assembly errors and enhancing reliability in vibration-prone equipment, conveyor systems, and structural frameworks. Its reusable nature supports maintenance efficiency, lowering total cost of ownership for B2B clients.

Specification Summary & Compliance

This locknut features an M6 x 1mm coarse thread with a Class 6H thread fit for precise dimensional accuracy, adhering to standard metric specifications. The external hex drive style ensures compatibility with common tools, while the Spring-Stop locking type provides secure performance. It is manufactured from 18-8 stainless steel and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming its suitability for use in products requiring strict safety and sustainability standards.