S-94450A124 M20 DIN 439, ISO 4035 Hex Nuts

Key Features & Benefits at a Glance

• Corrosion-resistant 18-8 stainless steel construction ensures long-term durability and reliability in harsh industrial environments
• Left-hand threading design provides secure fastening in applications where standard right-hand threads would loosen under rotational forces
• Thin profile (10mm height) offers space-saving advantages while maintaining full thread engagement capacity
• Class 6H thread fit precision guarantees consistent, vibration-resistant connections with minimal risk of cross-threading
• External hex drive configuration enables quick installation and removal using standard wrenching tools
• Dual-standard compliance (DIN 439, ISO 4035) ensures international compatibility and interchangeability across metric systems
• RoHS 3 and REACH environmental compliance meets stringent regulatory requirements for hazardous substance restrictions

Professional Applications & Engineering Value

This M20 left-hand thread hex nut addresses critical engineering challenges in applications where counter-rotational forces are present. The 18-8 stainless steel composition provides excellent corrosion resistance, making it ideal for marine equipment, food processing machinery, and chemical processing plants where moisture and corrosive agents are concerns. The thin profile design offers significant space optimization in compact assemblies while maintaining the full 2.5 mm coarse pitch thread engagement strength. Particularly valuable in rotating machinery, conveyor systems, and mixer applications, the left-hand threading prevents unintended loosening where standard right-hand threads would naturally unscrew. The external hex drive ensures compatibility with standard maintenance tools, streamlining installation and service procedures across industrial maintenance operations.

Specification Summary & Compliance

This precision metric thin hex nut features M20 x 2.5 mm left-hand coarse threading with Class 6H thread fit tolerance, manufactured in strict accordance with DIN 439 and ISO 4035 international standards. The nut maintains dimensional accuracy with 30mm width across flats and 10mm height profile. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to current environmental and hazardous substance restrictions for industrial applications worldwide.