S-91938A120 M12 DIN 439B, ISO 4035 Hex Nuts
Hex Nuts
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Basic Information
Dimension Parameters
Thread Parameters
Head Parameters
Material & Strength Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Superior corrosion resistance from 18-8 stainless steel construction, ideal for harsh environments and long-term reliability
- Precise thread engagement with Class 6H thread fit and extra fine 1.25mm pitch for secure, vibration-resistant fastening
- Space-saving thin profile (6mm height) allows use in compact assemblies without compromising strength
- Standardized dimensions per DIN 439B and ISO 4035 ensure consistent performance and interchangeability
- Easy installation and removal with external hex drive design compatible with standard tools
- Environmental compliance with RoHS 3 and REACH regulations for safe use in regulated industries
- Right-hand thread direction provides familiar, efficient assembly in standard applications
Professional Applications & Engineering Value
This M12 thin hex nut with extra fine 1.25mm thread pitch delivers exceptional performance in precision engineering applications where vibration resistance and space constraints are critical. The 18-8 stainless steel material offers excellent corrosion resistance, making it suitable for chemical processing, marine equipment, and food machinery where moisture and corrosive agents are present. The thin profile hex nut design (DIN 439B compliant) solves clearance issues in compact assemblies while maintaining full thread engagement. The Class 6H thread fit ensures precise mating with corresponding bolts, preventing loosening under dynamic loads. This combination of metric thread specifications and external hex drive makes it ideal for automotive components, precision instruments, and industrial machinery requiring reliable, long-lasting fastening solutions.
Specification Summary & Compliance
This M12 x 1.25mm extra fine thread thin hex nut features precise Class 6H thread fit tolerance and complies with DIN 439B and ISO 4035 manufacturing standards. The nut maintains dimensional accuracy with 19mm width and 6mm height profile. Environmental compliance is confirmed through RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) certifications, ensuring adherence to current regulatory requirements for hazardous substance restrictions.
