S-94450A511 4-40 Hex Nuts

Key Features & Benefits at a Glance

• Corrosion-resistant 18-8 stainless steel construction ensures long-term durability and reliability in harsh industrial environments.
• Left-hand thread direction provides secure fastening in applications where standard right-hand threads may loosen from counter-rotational forces.
• Thin hex nut profile (1/16" height) offers space-saving advantages where clearance is limited without compromising strength.
• Class 2B thread fit with UNC coarse spacing delivers consistent engagement and easier assembly in high-vibration settings.
• External hex drive style allows for straightforward installation and removal using standard wrenching tools.
• RoHS 3 and REACH compliance guarantees environmental safety and regulatory adherence for global industrial supply chains.
• 1/4" width across flats provides optimal tool contact surface for secure torque application during installation.

Professional Applications & Engineering Value

This 4-40 UNC left-hand thin hex nut addresses critical engineering challenges in machinery requiring reverse-thread security. The 18-8 stainless steel material offers excellent corrosion resistance, making it ideal for marine equipment, food processing machinery, and chemical processing plants where moisture and corrosive agents are present. The coarse UNC thread with Class 2B fit ensures reliable performance in high-vibration industrial applications, preventing unintended loosening while maintaining assembly efficiency. The thin profile is particularly valuable in compact assemblies and electronic enclosures where space optimization is crucial. These nuts provide dependable fastening solutions for maintenance operations, automotive systems, and specialized equipment requiring left-hand thread functionality to counteract rotational forces.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2B thread fit and UNC coarse thread spacing. The nut features a 1/4" width across flats and 1/16" height profile. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to international environmental and safety standards for industrial components.