S-94450A537 1 1/4"-7 ANSI/ASME 18.2.2 Hex Nuts

Key Features & Benefits at a Glance

• Exceptional corrosion resistance thanks to 18-8 Stainless Steel construction, ideal for harsh or outdoor environments.
• Left-hand thread design prevents unintentional loosening in applications with counter-clockwise rotational forces.
• Thin profile saves valuable space and weight without compromising on strength, perfect for compact assemblies.
• Coarse UNC threads enable faster installation and are less prone to cross-threading, boosting assembly efficiency.
• Class 2B thread fit ensures reliable, consistent engagement with mating parts for secure, vibration-resistant connections.
• External hex drive provides a standard, easy-to-use interface for common wrenches, simplifying maintenance and installation.
• Full environmental compliance with RoHS 3 and REACH standards, making it suitable for regulated industries and global supply chains.

Professional Applications & Engineering Value

This 1 1/4"-7 UNC Left Hand Thin Hex Nut is engineered to solve specific industrial challenges. Its 18-8 Stainless Steel material provides excellent resistance to rust and corrosion, making it a durable choice for marine, chemical processing, and food-grade equipment where moisture and corrosive agents are present. The left-hand thread direction is critical for applications involving rotating machinery, such as specific motors or mixer blades, where standard right-hand threads would naturally loosen. The thin hex nut profile is a key advantage in space-constrained assemblies, allowing engineers to design more compact systems without sacrificing the holding power of a coarse UNC thread. Manufactured to ANSI/ASME 18.2.2, this nut delivers predictable performance and interchangeability, reducing downtime and ensuring long-term reliability in heavy-duty fastening applications.

Specification Summary & Compliance

This nut features a 1 1/4"-7 UNC coarse thread with a Class 2B thread fit, ensuring dimensional accuracy and reliable mating. The external hex drive has a width of 1 7/8" and a height of 23/32". It is manufactured in compliance with the ANSI/ASME 18.2.2 standard. The product is also verified to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting stringent environmental and safety regulations.