S-90179A636 3/8"-16 x 3" Thumb Screws
Thumb Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Material & Strength
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Key Features & Benefits at a Glance
- Enhanced torque application with spade head design (15/16" height, 13/16" width) for secure manual tightening without tools
- Superior load distribution from integrated 0.688" flange that prevents surface damage and maintains joint integrity
- High-strength performance with hardened steel construction delivering 40,000 psi tensile strength for demanding applications
- Exceptional durability through Rockwell B55 hardness rating that resists wear and deformation under repeated use
- Precision threading compatibility with UNC coarse 3/8"-16 threads and Class 2A fit ensuring reliable engagement
- Full-length threading provides maximum adjustment range and consistent clamping force along the entire 3" length
- Right-hand thread direction offers standard, intuitive operation for quick installation and removal
Professional Applications & Engineering Value
This heavy-duty thumb screw addresses critical industrial fastening challenges where tool-free operation and high clamping force are essential. The steel construction with Rockwell B55 hardness ensures reliable performance in vibration-prone environments, while the spade head design provides exceptional grip for maximum torque application without specialized tools. The integrated flange distributes clamping pressure evenly, preventing damage to sensitive surfaces in machinery, electrical enclosures, and industrial equipment. With 3/8"-16 UNC coarse threading and Class 2A fit, these screws deliver precise engagement in maintenance panels, adjustable fixtures, and frequently accessed components where repeated adjustments are necessary.
Specification Summary & Compliance
Manufactured to precise Class 2A thread fit standards with UNC 3/8"-16 coarse threading and right-hand direction. The fully threaded 3" length provides complete functional engagement. Complies with industry-standard dimensional requirements for thumb screws and meets material specifications for industrial fastening applications.
