S-90576A103 M4 DIN 985, ISO 10511 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through the nylon insert, which maintains locking force under dynamic loads and prevents loosening in high-stress environments.
• High mechanical strength with a Class 8 rating, ensuring reliable performance in demanding industrial applications and heavy-duty assemblies.
• Enhanced corrosion protection from the zinc-plated steel construction, extending service life and reducing maintenance in harsh conditions.
• Wide temperature tolerance up to 220°F, allowing consistent performance in applications exposed to moderate heat fluctuations.
• Standardized external hex drive for easy installation and removal using common tools, improving assembly efficiency and reducing labor time.
• Coarse metric thread (M4 x 0.7mm) with Class 6H fit, providing quick engagement, reduced cross-threading risk, and secure fastening in various materials.
• Compliance with international standards including DIN 985 and ISO 10511, ensuring interchangeability, quality consistency, and global acceptance.

Professional Applications & Engineering Value

This M4 nylon insert lock nut is engineered to address critical challenges in industrial fastening, such as vibration-induced loosening and thermal expansion. The zinc-plated steel material offers durability and corrosion resistance, ideal for machinery, automotive, and electrical enclosures where environmental factors are a concern. The nylon insert provides consistent locking force without damaging threads, making it suitable for reusable applications in assembly lines and maintenance operations. With a right-hand coarse thread and external hex drive, it ensures quick installation and reliable performance in high-vibration settings like motors, conveyors, and structural frameworks. By meeting DIN 985 and ISO 10511 specifications, it delivers precision and reliability for B2B procurement in global supply chains.

Specification Summary & Compliance

This locknut features a metric M4 x 0.7mm coarse thread with Class 6H thread fit for precise engagement and dimensional accuracy per ISO standards. It complies with DIN 985 and ISO 10511 manufacturing specifications, ensuring consistent quality and performance. The product is RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, adhering to environmental and safety regulations for hazardous substances. With a Strength Class 8 rating, it meets rigorous mechanical requirements for industrial use.