S-90519A832 M6 ASTM A108, DIN 439B, ISO 4035 Hex Nuts

Key Features & Benefits at a Glance

• Precise left-hand threading ensures secure fastening in specialized applications where reverse rotation is required, preventing accidental loosening
• Black-oxide steel construction provides excellent corrosion resistance and durability in demanding industrial environments
• Thin profile design (3.2 mm height) saves space and weight while maintaining full functionality in compact assemblies
• Class 04 strength rating delivers reliable performance for medium-duty applications with consistent load-bearing capacity
• Class 6H thread fit guarantees precise mating with compatible bolts, reducing assembly time and improving connection integrity
• Multi-standard compliance (ASTM A108, DIN 439B, ISO 4035) ensures global interoperability and quality assurance
• Environmental compliance with RoHS 3 and REACH regulations makes these nuts suitable for regulated industries worldwide

Professional Applications & Engineering Value

This M6 left-hand thread hex nut solves critical engineering challenges in applications requiring reverse-thread security. The black-oxide steel surface treatment provides superior corrosion protection without compromising dimensional accuracy, making it ideal for machinery exposed to moisture or chemical environments. The thin profile design addresses space constraints in compact assemblies while maintaining full thread engagement. With its 0.75 mm fine pitch and Class 6H thread fit, this nut delivers vibration resistance in rotating equipment, conveyor systems, and precision instruments where standard right-hand threads would unscrew under specific motion patterns. The combination of metric thin hex nut geometry and left-hand threading makes it particularly valuable for safety-critical applications in automotive, aerospace, and industrial machinery where reverse rotation prevention is essential.

Specification Summary & Compliance

This metric thin hex nut features M6 x 0.75 mm left-hand fine threads with Class 6H thread fit tolerance according to ISO standards. The thin profile conforms to DIN 439B dimensions (10 mm width, 3.2 mm height). Manufacturing follows ASTM A108 material specifications with Class 04 strength rating. The product is fully compliant with RoHS 3 (2015/863/EU) with exemption 6(a) for lead as an alloying element in steel and REACH (EC 1907/2006) regulations, ensuring environmental responsibility in industrial applications.