S-95150A104 5-40 Thumb Nuts
Thumb Nuts
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Basic Information
Dimension Parameters
Thread Parameters
Head Parameters
Material & Strength Parameters
Finish & Compliance Parameters
Geometric Parameters
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Key Features & Benefits at a Glance
- Superior hand-tightening capability with fully knurled round head for secure grip in low-clearance applications
- Enhanced stability and load distribution through flanged design that acts as an integrated washer
- Excellent corrosion resistance with 18-8 stainless steel construction for demanding industrial environments
- Reliable thread engagement with Class 2B fit UNC coarse threads ensuring consistent fastening performance
- Quick installation and adjustment with right-hand threading compatible with standard 5-40 UNC components
- Durable long-term performance maintaining integrity in vibration-prone applications
- Regulatory compliance assurance meeting RoHS 3 and REACH environmental standards
Professional Applications & Engineering Value
This 5-40 UNC thumb nut delivers exceptional value in applications requiring frequent adjustments or tool-less maintenance. The 18-8 stainless steel construction provides reliable corrosion resistance in harsh environments, while the fully knurled surface ensures positive grip even with oily hands or gloves. The flanged design distributes clamping force effectively, reducing surface damage and preventing loosening under vibration. Engineers specify these thumb nuts for electronic enclosures, machinery guards, and assembly fixtures where quick access and hand-tightening capability are critical. The coarse UNC threading and Class 2B fit guarantee smooth engagement with mating components, making them ideal for production lines and maintenance applications requiring rapid assembly and disassembly.
Specification Summary & Compliance
This thumb nut features precision 5-40 UNC coarse threads with Class 2B fit for consistent engagement and reliable performance. The inch-dimensioned component includes a 1/4" collar diameter and 1/4" overall height with right-hand threading. Manufacturing complies with industry standards for thread form and dimensional accuracy. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and workplace safety.
