S-90819A111 M4 DIN 985, ISO 10511 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through the nylon insert, ensuring reliable fastening in high-motion environments.
• Enhanced durability and corrosion protection with black-coated steel, suitable for harsh industrial conditions.
• High-strength performance with Class 8 rating, providing dependable load-bearing capacity.
• Precise metric coarse threading (M4 x 0.7mm) with Class 6H fit for easy installation and secure hold.
• Wide temperature tolerance up to 220°F, maintaining locking integrity in varied thermal settings.
• Compliance with international standards (DIN 985, ISO 10511), ensuring quality and interchangeability.
• Environmental and safety adherence via REACH and RoHS 3 compliance, supporting sustainable procurement.

Professional Applications & Engineering Value

This M4 locknut with a nylon insert is engineered to address critical challenges in industrial applications where vibration loosening can compromise safety and performance. The black corrosion-resistant-coated steel construction offers long-term reliability in exposed or corrosive settings, such as automotive assemblies, machinery, and electrical enclosures. Its metric coarse threading and Class 6H fit ensure quick, accurate installation with minimal risk of cross-threading, reducing assembly time and maintenance costs. By combining high-temperature resistance up to 220°F with robust external hex drive design, this locknut delivers consistent clamping force, making it ideal for vibration-resistant fastening in demanding engineering projects.

Specification Summary & Compliance

This locknut adheres to DIN 985 and ISO 10511 standards, with precise metric coarse threading (M4 x 0.7mm) and Class 6H thread fit for dimensional accuracy. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring environmental safety and regulatory alignment in industrial use.