S-92040A109 1/4"-20 Cap Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and outdoor applications.
• Enhanced load distribution due to the extra-wide high profile design, reducing surface pressure and preventing material damage.
• Reliable thread engagement with Class 2B thread fit, ensuring consistent fastening and vibration resistance in demanding assemblies.
• Easy installation and removal using standard tools thanks to the external hex drive and right-hand coarse (UNC) threading.
• Compliance with strict regulations including RoHS 3 and REACH, making it safe for various global industrial and manufacturing uses.
• Durable performance with a 5/8" height and width, providing a robust and secure cap for 1/4"-20 threaded components.
• Wide compatibility with coarse thread spacing, suitable for general-purpose applications in machinery, equipment, and structural assemblies.

Professional Applications & Engineering Value

This 1/4"-20 UNC cap nut is engineered to address common challenges in industrial fastening, such as corrosion-induced failure and loosening under vibration. The 18-8 stainless steel material offers excellent resistance to rust and chemicals, extending service life in moist or aggressive settings. Its extra-wide high profile distributes clamping force evenly, minimizing stress on connected parts—critical for heavy-duty machinery, automotive systems, and construction frameworks. With a Class 2B thread fit and coarse thread spacing, it ensures quick assembly and reliable performance in high-vibration environments, reducing maintenance needs and downtime. The external hex drive allows for straightforward torque application, streamlining installation in tight spaces while maintaining integrity in industrial cap nut applications.

Specification Summary & Compliance

This cap nut adheres to UNC coarse thread standards with a Class 2B thread fit for precise dimensional accuracy and smooth engagement. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring environmental safety and regulatory alignment. Manufactured with a thread size of 1/4"-20, width and height of 5/8", and thread depth of 3/8", it is suitable for inch-system applications requiring durability and corrosion resistance.