S-93005A120 5/16"-18 x 2" Thumb Screws
Thumb Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Effortless hand-tightening with a four-arm aluminum head for quick installation and removal without tools
- Superior corrosion resistance from the black-oxide steel finish, extending service life in demanding environments
- High-strength reliability with 70,000 psi tensile strength and Rockwell C40 hardness for durable, load-bearing applications
- Secure coarse thread engagement using UNC Class 2A threads for rapid assembly and vibration resistance
- Versatile partial threading and extended tip for precise positioning and alignment in machinery and fixtures
- Lightweight, durable head made from aluminum, reducing overall weight while maintaining structural integrity
- Environmental compliance assurance with RoHS 3 adherence, meeting strict industry regulations for safe use
Professional Applications & Engineering Value
This black-oxide steel thumb screw is engineered to solve common industrial fastening challenges, such as frequent adjustments and exposure to harsh conditions. The UNC coarse thread and Class 2A fit ensure quick, secure installations in equipment panels, jigs, and access doors, minimizing assembly time. The aluminum four-arm head provides a comfortable grip for hand-tightening, ideal for applications where tools are impractical. With a partially threaded design and extended tip, it offers precise control in positioning components, making it a reliable choice for manufacturing, electronics, and machinery maintenance. Its high tensile strength and corrosion-resistant finish deliver long-term performance, reducing replacement costs and downtime.
Specification Summary & Compliance
This thumb screw adheres to UNC thread standards with a Class 2A thread fit for consistent dimensional accuracy. It meets RoHS 3 (2015/863/EU) compliance under exemption 6(a)-I, ensuring environmental safety. Specifications include a 5/16"-18 thread size, 2" length, and coarse thread spacing, manufactured to support industrial reliability and ASME-aligned practices.
