S-91746A551 6-48 x 1/2" 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
- Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and long-term reliability.
- Enhanced manual grip and torque application thanks to the knurled round head design, reducing tool dependency and speeding up assembly.
- Exceptional tensile strength of 80,000 psi ensures secure fastening under high-stress conditions without failure.
- Precise thread engagement with 6-48 extra fine thread and Class 2A fit, minimizing backlash in precision assemblies.
- Full threading along the 1/2" length provides consistent holding power and adjustable positioning.
- Durable Rockwell B83 hardness maintains thread integrity and resists wear during repeated use.
- Compliance with RoHS 3 and REACH standards guarantees safety and environmental responsibility for global supply chains.
Professional Applications & Engineering Value
This 18-8 stainless steel thumb screw is engineered to address common industrial challenges such as frequent adjustments and exposure to corrosive elements. The knurled round head offers a secure, tool-free grip, reducing installation time and minimizing slippage in tight spaces. With its 6-48 extra fine thread and Class 2A fit, it delivers precise alignment and vibration resistance in applications like electronics enclosures, optical devices, and precision instruments. The fully threaded narrow profile ensures uniform load distribution, while the high tensile strength and corrosion-resistant material make it a reliable choice for industrial fasteners in medical, aerospace, and automotive sectors where durability and compliance are critical.
Specification Summary & Compliance
This thumb screw adheres to UNS thread standards with a Class 2A thread fit for consistent dimensional accuracy. It features a right-hand thread direction, 1/2" length, and is fully threaded for versatile use. The product complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets strict environmental and safety requirements for industrial components.
