S-97131A190 M18 DIN 982, ISO 7040 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance with a durable nylon insert that maintains locking force under dynamic loads, preventing loosening in high-stress applications.
• High-strength Class 8 rating ensures reliable performance in demanding industrial environments, offering excellent load-bearing capacity and fatigue resistance.
• Corrosion-resistant zinc-plated steel construction extends service life and protects against rust in harsh or outdoor conditions.
• Wide temperature tolerance up to 220°F allows for stable operation in various thermal environments without compromising the nylon insert's locking effectiveness.
• Precision metric threading (M18 x 2.5 mm coarse pitch) with Class 6H fit ensures easy installation and secure, accurate mating with compatible bolts.
• Standard-compliant design (DIN 982, ISO 7040) guarantees interchangeability and reliability across global engineering and assembly systems.
• External hex drive with high profile facilitates straightforward installation and removal using common tools, reducing assembly time and effort.

Professional Applications & Engineering Value

This M18 nylon insert lock nut is engineered to address critical challenges in industrial settings, such as vibration-induced fastener failure and thermal expansion. The zinc-plated steel body provides robust corrosion protection, while the high-strength Class 8 material ensures durability under heavy loads. The nylon insert delivers consistent locking action by creating friction against the bolt threads, effectively resisting loosening from machinery vibrations or shock loads. Ideal for automotive, construction, and heavy equipment applications, this metric lock nut with coarse thread and external hex drive simplifies maintenance and enhances safety in assemblies where reliability is paramount. Its compliance with DIN 982 and ISO 7040 standards assures precise fit and long-term performance in global supply chains.

Specification Summary & Compliance

This lock nut features M18 x 2.5 mm coarse threads with a Class 6H thread fit for accurate engagement and tolerance control. It adheres to DIN 982 and ISO 7040 manufacturing specifications, ensuring dimensional consistency and interoperability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of hazardous substances and supporting environmentally responsible sourcing. With a maximum operating temperature of 220°F for the nylon insert, it meets rigorous industrial requirements for safety and performance.