S-91746A247 8-40 x 1" 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 grip and torque application with precision knurled round head design for secure manual operation without tools
- Superior corrosion resistance and durability thanks to 18-8 stainless steel construction, ideal for harsh industrial environments
- Exceptional mechanical strength with 80,000 psi tensile strength and Rockwell B83 hardness for reliable, long-lasting performance
- Precise thread engagement and secure fastening with Class 2A thread fit and UNS extra fine threads for vibration resistance
- Full threading along the 1" length provides maximum adjustability and holding power in various applications
- Right-hand thread direction ensures standard, intuitive installation for efficient assembly processes
- Compliance with environmental and safety standards including RoHS 3 and REACH for global market acceptance
Professional Applications & Engineering Value
This 8-40 extra fine thread thumb screw is engineered to address common industrial challenges such as frequent adjustments, tool-free access requirements, and exposure to corrosive conditions. The 18-8 stainless steel material offers excellent resistance to rust and oxidation, making it suitable for electronics, machinery, and outdoor equipment where durability is critical. The fully threaded design and Class 2A thread fit ensure tight, secure connections that resist loosening under vibration, while the knurled round head allows for quick manual tightening in confined spaces. Ideal for applications requiring precise, repeatable fastening without compromising on strength or compliance, this thumb screw delivers consistent performance in industrial thumb screw applications.
Specification Summary & Compliance
This thumb screw features a 1" length with 8-40 extra fine UNS threads and Class 2A thread fit for precise dimensional accuracy. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets strict environmental and safety standards for industrial use. Manufactured from 18-8 stainless steel with a tensile strength of 80,000 psi, it adheres to consistent quality and reliability in fastening applications.
