S-91746A241 8-40 x 1/2" Thumb Screws
Thumb Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh environments and extended service life
- Enhanced manual grip and torque application from the fully knurled round head, allowing for easy hand-tightening without tools
- Precise, secure fastening with 8-40 extra fine thread and Class 2A fit, minimizing the risk of cross-threading and ensuring reliable connections
- High mechanical strength and durability from Rockwell B83 hardness and 80,000 psi tensile strength, resisting deformation under load
- Maximum thread engagement due to the fully threaded 1/2" length, providing superior holding power in various materials
- Streamlined assembly in tight spaces with its narrow round-head profile, offering a low-profile solution for compact designs
- Compliance with global environmental standards including RoHS 3 and REACH, ensuring safe and sustainable use in regulated industries
Professional Applications & Engineering Value
This 18-8 Stainless Steel Thumb Screw is engineered to address common industrial challenges such as frequent adjustments, tool-less access requirements, and exposure to corrosive elements. The knurled round head provides exceptional grip, reducing operator fatigue in applications like electronic enclosures, instrumentation panels, and medical devices where quick maintenance is critical. Its 8-40 extra fine thread and Class 2A fit deliver precise alignment and vibration resistance, preventing loosening in high-precision assemblies. The fully threaded design ensures consistent clamping force across the entire 1/2" length, making it a reliable choice for securing components in aerospace, automotive, and telecommunications equipment where durability and compliance with RoHS and REACH standards are mandatory.
Specification Summary & Compliance
This thumb screw adheres to UNS thread standards with an 8-40 extra fine thread and Class 2A thread fit for precise dimensional accuracy. It is manufactured from 18-8 Stainless Steel with a hardness of Rockwell B83 and tensile strength of 80,000 psi. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets stringent environmental and safety requirements for industrial use.
