S-90519A266 1 1/4"-12 Hex Nuts

Key Features & Benefits at a Glance

• Left-hand thread design provides secure fastening in applications where standard right-hand threads may loosen due to rotational forces, enhancing operational safety.
• Grade 2 steel construction delivers reliable strength and durability for general industrial use, resisting deformation under moderate loads.
• Class 2B fine thread fit ensures smooth engagement and consistent clamping force, reducing the risk of cross-threading in precision assemblies.
• UNF (Unified National Fine) thread standard offers superior resistance to vibration and fatigue compared to coarse threads, ideal for dynamic environments.
• Standard hex profile with 1 7/8" width allows for easy installation and removal using common wrenches, streamlining maintenance workflows.
• Full compliance with RoHS 3 and REACH regulations guarantees environmental safety and material transparency for global supply chain integration.
• 1 1/16" height provides sufficient thread engagement for stable connections without adding excessive weight or bulk.

Professional Applications & Engineering Value

This left hand thread hex nut addresses critical challenges in machinery and equipment where reverse rotation is prevalent, such as conveyor systems, mixing apparatus, and automotive components. Crafted from Grade 2 steel, it maintains structural integrity under repetitive stress, while the UNF fine thread with Class 2B tolerance ensures precise alignment and leak-proof seals in pressurized assemblies. The external hex drive facilitates quick servicing in confined spaces, reducing downtime. Ideal for industrial fasteners requiring counter-clockwise tightening, it prevents accidental loosening in high-vibration settings, offering engineers a dependable solution for left-hand threading needs without compromising on RoHS and REACH compliance for sustainable operations.

Specification Summary & Compliance

This hex nut adheres to inch system dimensions with a thread size of 1 1/4"-12 UNF and Class 2B thread fit for consistent interchangeability. Manufactured to standardized profiles, it meets general Grade 2 strength requirements for non-critical applications. The product is verified to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring adherence to hazardous substance restrictions and chemical safety protocols in industrial markets.