S-90043A105 1 1/8"-7 Square Nuts

Key Features & Benefits at a Glance

• Exceptional durability and longevity thanks to high-strength steel construction that withstands heavy loads and harsh industrial environments
• Secure and reliable fastening with Class 2B thread fit, ensuring consistent engagement and vibration resistance in demanding applications
• Quick and easy installation facilitated by the external square drive design, allowing for efficient wrenching and reduced assembly time
• Superior resistance to loosening from coarse UNC threading, which provides enhanced grip and performance under dynamic stress conditions
• Broad compatibility with standard components due to 1 1/8"-7 UNC right-hand thread, simplifying sourcing and replacement in existing systems
• Confident global compliance with RoHS 3 and REACH regulations, ensuring safe, environmentally responsible use across various industries
• Optimized stability and load distribution from the square nut profile (1 11/16" width, 1" height), minimizing rotation and improving structural integrity

Professional Applications & Engineering Value

This heavy-duty steel square nut is engineered to address critical challenges in industrial assembly, such as maintaining joint integrity under high vibration and load. The 1 1/8"-7 UNC coarse thread and Class 2B thread fit deliver reliable, precision fastening that reduces the risk of stripping or cross-threading, common in coarse-thread applications. Its external square drive enables straightforward installation with standard tools, speeding up maintenance in machinery, construction, and automotive sectors. The robust steel material ensures long-term performance, while compliance with RoHS and REACH supports sustainable, safe operations. Ideal for structural frames, heavy equipment, and OEM components, this nut provides a dependable solution where durability and precision are non-negotiable.

Specification Summary & Compliance

This square nut features a 1 1/8"-7 UNC coarse thread with Class 2B thread fit for consistent dimensional accuracy and ease of assembly. It adheres to standardized inch measurements, including a width of 1 11/16" and height of 1", and is manufactured from durable steel with a right-hand thread direction. The product fully complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets stringent environmental and safety requirements for industrial use.