S-92741A201 1-72 Thumb Nuts

Key Features & Benefits at a Glance

• Superior manual grip and torque application with a knurled round head design, enabling easy hand-tightening without tools
• Enhanced stability and load distribution due to the integrated flange, which acts as a built-in washer to prevent loosening
• Excellent corrosion resistance and durability from high-quality brass construction, ideal for harsh or moist environments
• Precise and reliable fine thread engagement with 1-72 UNF Class 2B threads, ensuring secure fastening in delicate assemblies
• Wide compatibility and easy installation with fully threaded right-hand design, fitting standard UNF male threads seamlessly
• Safe for regulated industries with full compliance to RoHS 3 and REACH environmental standards
• Optimized for frequent adjustments thanks to the flanged, knurled profile that provides repeated manual handling convenience

Professional Applications & Engineering Value

This brass thumb nut is engineered to solve common challenges in precision assembly and maintenance where tools are impractical or speed is critical. The flanged design increases bearing surface, reducing the risk of damage to soft materials and providing vibration resistance in dynamic applications. Made from corrosion-resistant brass, it excels in electrical enclosures, marine components, and laboratory equipment, where frequent manual adjustments are needed. The 1-72 UNF fine thread and Class 2B fit ensure tight, reliable connections in compact assemblies, while the knurled head offers a non-slip grip even with oily hands. Ideal for OEM and MRO uses, this nut enhances operational efficiency in industries like electronics, instrumentation, and automotive, where manual installation and compliance with REACH and RoHS are mandatory.

Specification Summary & Compliance

This thumb nut adheres to UNF thread standards with a 1-72 fine thread size and Class 2B thread fit for consistent, precise engagement. Dimensions include a head diameter of 1/4", collar diameter of 3/16", and overall height of 1/4". The product is manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), ensuring it is free of hazardous substances and suitable for global markets. The right-hand threading and fully threaded design provide uniform load distribution and ease of use in inch-based systems.