S-93031A138 M18 DIN 439B, ISO 4035 Hex Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance in harsh environments due to 316 stainless steel construction
• Space-saving thin profile (9mm height) ideal for applications with limited clearance
• Precise left-hand thread engagement prevents loosening from counter-clockwise rotational forces
• Reliable fine pitch threading (1.5mm) ensures vibration resistance and secure fastening
• Consistent quality and interchangeability guaranteed by DIN 439B and ISO 4035 standards
• Optimized Class 6H thread fit provides smooth assembly and reduced cross-threading risk
• Environmental compliance assurance meeting RoHS 3 and REACH regulations for global supply chains

Professional Applications & Engineering Value

This M18 left-hand thread hex nut delivers critical engineering solutions where reverse-thread applications prevent accidental disassembly. The 316 stainless steel material offers exceptional resistance to chemicals, saltwater, and industrial corrosives, making it ideal for marine equipment, chemical processing plants, and food manufacturing machinery. The thin hex nut profile provides significant space optimization in compact assemblies while maintaining full external hex drive functionality for standard tooling. With its fine metric thread pitch and Class 6H thread fit, this fastener ensures vibration-resistant connections in rotating machinery, conveyor systems, and precision equipment where left-hand threading is specified for safety and operational requirements.

Specification Summary & Compliance

This metric thin hex nut features M18x1.5mm left-hand threads with Class 6H thread fit tolerance, manufactured to DIN 439B and ISO 4035 specifications. Dimensions include 27mm width across flats and 9mm height. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and unrestricted use in international markets.