S-97149A210 3/8"-24 Hex Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance from Black-Oxide coated 18-8 Stainless Steel, ideal for harsh environments and extending service life.
• Reliable, vibration-resistant fastening ensured by the UNF fine thread profile, minimizing the risk of loosening under dynamic loads.
• Precise and secure thread engagement with Class 2B thread fit, providing consistent clamping force and ease of assembly.
• High-strength, durable construction using 18-8 Stainless Steel, offering excellent mechanical performance for industrial applications.
• Standard external hex drive design allows for easy installation and removal with common tools, boosting assembly efficiency.
• Full compliance with RoHS 3 and REACH regulations, ensuring environmental safety and suitability for global markets.
• Optimized dimensions (9/16" width, 21/64" height) for a compact, robust profile that fits standard wrench sizes and confined spaces.

Professional Applications & Engineering Value

This 3/8"-24 UNF hex nut is engineered to solve critical challenges in demanding industrial settings. The core of its value lies in the Black-Oxide 18-8 Stainless Steel material, which provides an exceptional barrier against rust and corrosion, significantly outperforming plain carbon steel in humid or chemically aggressive environments. Combined with the UNF fine thread and Class 2B thread fit, this nut delivers a tighter, more secure connection that is highly resistant to vibration-induced loosening—a common failure point in machinery, automotive assemblies, and heavy equipment. This makes it an indispensable industrial-grade fastener for applications where long-term reliability and maintenance reduction are paramount, from structural frameworks to precision instrumentation.

Specification Summary & Compliance

This hex nut adheres to the Unified National Fine (UNF) thread standard with a Class 2B thread fit, ensuring dimensional accuracy and interchangeability. The manufacturing and material composition are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free of restricted hazardous substances. The product is supplied in the inch system of measurement with a right-hand thread direction.