S-90179A622 3/8"-16 x 3/4" Thumb Screws
Thumb Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Enhanced manual torque application with large 15/16" head height and spade head design for superior grip without tools
- Increased load distribution through integrated 0.688" flange preventing surface damage and maintaining joint integrity
- Reliable coarse threading with UNC 3/8"-16 pattern ensures quick installation and vibration resistance in industrial environments
- Precision Class 2A thread fit guarantees consistent engagement and smooth assembly across multiple applications
- Exceptional mechanical strength with 40,000 psi tensile strength and Rockwell B55 hardness for heavy-duty fastening requirements
- Full-threaded construction provides maximum thread engagement along the entire 3/4" length for secure connections
- Environmentally compliant manufacturing meeting RoHS 3 standards for safe use across regulated industries
Professional Applications & Engineering Value
This heavy-duty steel thumb screw addresses critical industrial fastening challenges where frequent adjustments and tool-free operation are essential. The flanged spade head design combines substantial surface contact with ergonomic thumb pads, eliminating the need for specialized tools while providing superior torque application. Engineered with UNC coarse threading and Class 2A thread fit, it ensures rapid installation and removal in maintenance-heavy applications such as machinery guards, access panels, and equipment fixtures. The fully threaded construction maintains consistent clamping force across the entire engagement length, while the Rockwell B55 hardness and 40,000 psi tensile strength provide reliable performance in high-vibration environments. Ideal for manufacturing equipment, electronic enclosures, and industrial assemblies requiring repeated access without compromising fastener integrity.
Specification Summary & Compliance
This 3/8"-16 UNC thumb screw features precise Class 2A thread fit tolerances with coarse thread spacing for optimal engagement. Manufactured from high-strength steel with Rockwell B55 hardness rating and 40,000 psi tensile strength. The product maintains full compliance with RoHS 3 (2015/863/EU) environmental regulations and follows standard UNC threading specifications for industrial applications.
