S-90519A817 M12 ASTM A108, 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
- Enhanced corrosion resistance with black-oxide steel coating for extended service life in harsh industrial environments
- Secure left-hand thread engagement prevents loosening in counter-rotating applications and specialized machinery
- Space-saving thin profile (6mm height) enables installation in confined spaces without compromising strength
- Reliable coarse thread performance with 1.75mm pitch for faster assembly and reduced cross-threading risks
- Precision Class 6H thread fit ensures consistent mating with male threads for vibration-resistant connections
- Multi-standard compliance meets ASTM A108, DIN 439B, and ISO 4035 specifications for global project compatibility
- Environmental regulation adherence with RoHS 3 and REACH compliance for responsible manufacturing standards
Professional Applications & Engineering Value
This M12 left-hand thread hex nut delivers critical engineering solutions where standard right-hand fasteners would compromise safety. The black-oxide steel construction provides superior corrosion protection for outdoor equipment, automotive assemblies, and manufacturing machinery exposed to moisture and chemicals. Its thin 6mm profile addresses space constraints in compact designs while maintaining full Class 04 strength rating. The coarse 1.75mm pitch enables rapid installation in high-volume production environments and resists jamming in vibrating systems. Engineered for rotating components, conveyor systems, and specialized tooling requiring reverse-thread security, this metric hex nut combines precise external hex drive functionality with rigorous international standards compliance.
Specification Summary & Compliance
Manufactured to exact Class 6H thread tolerance with M12 x 1.75mm left-hand coarse threading. Complies with ASTM A108 material specifications, DIN 439B dimensional standards for thin hex nuts, and ISO 4035 performance requirements. Features 19mm width across flats and 6mm height profile. Meets RoHS 3 (2015/863/EU) compliance with exemption 6(a) for lead as steel alloying element and full REACH (EC 1907/2006) adherence for hazardous substance restrictions.
