S-90043A029 1/4"-20 Square Nuts

Key Features & Benefits at a Glance

• Enhanced Grip and Torque Application: External square drive design allows for superior tool engagement, reducing slippage and enabling higher tightening torque in confined spaces.
• Robust and Long-Lasting Construction: Made from durable steel, this nut resists wear and deformation, ensuring reliable performance in demanding industrial environments.
• Reliable Thread Engagement: Class 2B thread fit provides consistent, free-spinning assembly with sufficient clearance for rapid installation without sacrificing holding strength.
• Optimized for High-Speed Assembly: The coarse UNC 1/4"-20 thread facilitates quicker installation and is less prone to cross-threading, boosting production line efficiency.
• Secure Fastening in Dynamic Conditions: Right-hand thread direction ensures standard, predictable tightening behavior, maintaining joint integrity under vibration and load.
• Confident Global Sourcing: Compliant with RoHS 3 and REACH regulations, ensuring the nut is free from hazardous substances for use in international markets and sensitive applications.
• Dimensional Consistency: Precise 7/16" width and 7/32" height provide a standard profile for easy integration with common wrench sizes and assembly fixtures.

Professional Applications & Engineering Value

This 1/4"-20 UNC square nut is engineered to address common challenges in machinery assembly, structural frameworks, and heavy-duty equipment. The steel construction offers excellent tensile strength, preventing stripping under high cyclic loads, while the external square drive allows for secure wrenching in tight spaces where socket access is limited. Its coarse thread spacing is ideal for applications involving wood, castings, or thicker metals, reducing the risk of thread galling and enabling faster disassembly for maintenance. The Class 2B thread fit ensures compatibility with a wide range of UNC threaded bolts, providing a reliable, vibration-resistant connection in conveyor systems, agricultural machinery, and construction projects. This nut delivers consistent performance, reducing downtime and replacement costs in industrial settings.

Specification Summary & Compliance

This square nut conforms to Unified Coarse (UNC) thread standards with a 1/4"-20 size and Class 2B thread fit for consistent dimensional accuracy. Manufactured from steel with an external square drive, it meets industry specifications for inch-system fasteners. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), ensuring adherence to environmental and safety regulations for hazardous substance control.