S-92741A202 3-48 Thumb Nuts
Thumb Nuts
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Basic Information
Dimension Parameters
Thread Parameters
Head Parameters
Finish & Compliance Parameters
Geometric Parameters
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Key Features & Benefits at a Glance
- Enhanced manual grip with knurled round head design for secure tool-free tightening and loosening in confined spaces
- Superior corrosion resistance due to brass construction, ideal for humid or corrosive industrial environments
- Increased stability and load distribution from the integrated flange, preventing loosening under vibration
- Precise and reliable threading with Class 2B UNC coarse threads ensuring smooth engagement and consistent fastening performance
- Full-threaded design provides maximum thread contact for enhanced durability and load-bearing capacity
- Compliance with stringent safety standards including REACH and RoHS 3, ensuring safe use in regulated industries
- Compact 1/4" height and 5/16" head diameter for space-efficient applications without compromising strength
Professional Applications & Engineering Value
This 3-48 UNC brass thumb nut delivers exceptional value in applications requiring frequent manual adjustments or where tool access is limited. The flanged design increases bearing surface area, reducing surface pressure and minimizing damage to connected materials. Its fully threaded coarse UNC pattern with Class 2B fit ensures rapid installation and reliable performance in vibration-prone environments. The knurled round head provides positive grip even with oily hands or gloves, while the brass material offers excellent corrosion resistance for electronics, marine, and plumbing applications. Engineers specify this component for manual fastening solutions that demand both operational convenience and long-term reliability in demanding conditions.
Specification Summary & Compliance
This thumb nut features 3-48 UNC coarse threading with Class 2B thread fit for standard inch applications. Manufacturing adheres to industry standards for dimensional accuracy, including collar diameter (1/4"), height (1/4"), and head diameter (5/16"). The product is fully compliant with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) regulations, ensuring environmental safety and restricted substance control for industrial use.
