S-94775A029 1/4"-20 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
- Enhanced grip and torque application with knurled round head design for secure hand-tightening in tight spaces
- Superior corrosion resistance thanks to black-oxide steel construction, ideal for demanding industrial environments
- Optimized low-profile design provides space-saving installation while maintaining structural integrity
- Reliable thread engagement with Class 2B thread fit ensuring consistent performance in assembly applications
- Quick installation and adjustment through coarse UNC threads and right-hand threading for efficient maintenance
- Robust load distribution with 7/8" head diameter providing stable fastening across surfaces
- Compliance with international standards including RoHS 3 and REACH for global supply chain compatibility
Professional Applications & Engineering Value
This low profile thumb nut delivers exceptional engineering value across industrial applications where space constraints and corrosion resistance are critical. The black-oxide steel construction provides superior protection against rust and wear in manufacturing, automotive, and machinery applications. The knurled round head offers excellent grip even with oily hands or gloves, reducing installation time while the 1/4"-20 UNC coarse threads ensure rapid assembly and disassembly for maintenance-heavy environments. The combination of Class 2B thread fit and low-profile design makes it ideal for applications requiring reliable, repeated adjustments without compromising thread integrity or requiring specialized tools.
Specification Summary & Compliance
This thumb nut features precision 1/4"-20 UNC coarse threads with Class 2B thread fit for consistent engagement and reliable performance. The fastener maintains dimensional accuracy with 7/8" head diameter and 1/4" height. Manufacturing complies with RoHS 3 (2015/863/EU) with exemption 6(a)-I for lead as an alloying element in steel and REACH (EC 1907/2006) standards, ensuring environmental compliance for industrial applications worldwide.
