S-93031A133 M8 DIN 439B, ISO 4035 Hex Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh chemical and marine environments
• Reliable left-hand thread engagement for specialized applications requiring reverse-threading security
• Space-saving thin profile (4mm height) enables use in compact assemblies without compromising strength
• Precision Class 6H thread fit ensures consistent, vibration-resistant fastening in critical applications
• Standardized compliance with DIN 439B and ISO 4035 guarantees interchangeability and global engineering acceptance
• Fine 1mm pitch threading provides enhanced adjustment precision and superior load distribution
• Environmental regulation compliance with RoHS 3 and REACH ensures safe use in regulated industries

Professional Applications & Engineering Value

This M8 left-hand thread hex nut solves critical reverse-threading requirements in rotating machinery, safety systems, and specialized equipment where standard right-hand threads would loosen under counter-rotational forces. The 316 stainless steel composition delivers exceptional chemical resistance against chlorides and acidic environments, making it indispensable for marine, chemical processing, and food industry applications. The thin hex profile (13mm width × 4mm height) provides significant space savings in compact assemblies while maintaining full external hex drive functionality for standard tool engagement. Engineered with fine metric threading (1mm pitch), it offers superior vibration resistance and precise adjustment capabilities in high-precision mechanical systems.

Specification Summary & Compliance

This metric thin hex nut features M8×1mm left-hand thread with Class 6H thread fit tolerance and fine thread spacing. Manufactured to DIN 439B and ISO 4035 specifications with dimensions of 13mm width and 4mm height. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations for hazardous substance restrictions.