S-91746A951 6-48 x 1/2" 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
- Enhanced manual grip with knurled round head design for easy hand-tightening without tools in tight spaces.
- Superior corrosion resistance from 18-8 stainless steel material, ideal for humid or chemical-exposed environments.
- High tensile strength of 80,000 psi ensures reliable load-bearing capacity and resistance to deformation under stress.
- Precise thread engagement with Class 2A fit and extra fine 6-48 UNS thread for secure fastening in fine-pitch applications.
- Full threading along the 1/2" length provides maximum adjustability and consistent hold across the entire fastener.
- Durable Rockwell B83 hardness maintains thread integrity and resists wear during repeated installations.
- Compliance with RoHS 3 and REACH standards guarantees environmental safety and regulatory acceptance for global industrial use.
Professional Applications & Engineering Value
This 18-8 stainless steel thumb screw is engineered to address common assembly challenges where tool-free access and fine adjustment are critical. The knurled round head with narrow profile offers an ergonomic grip, reducing installation time in electronics, optical devices, and precision instruments. Its extra fine 6-48 thread and Class 2A fit ensure minimal backlash and vibration resistance, making it suitable for applications requiring meticulous alignment, such as calibration equipment or laboratory apparatus. The fully threaded design and high tensile strength provide uniform clamping force, preventing loosening in dynamic environments while the corrosion-resistant material extends service life in demanding industrial settings.
Specification Summary & Compliance
This thumb screw features a 6-48 extra fine UNS thread with a Class 2A thread fit for precise dimensional accuracy, a thread diameter of 0.138", and a right-hand thread direction. Manufactured from 18-8 stainless steel, it complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to environmental and safety standards for industrial components.
