S-91830A743 1/2"-13 x 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
- Enhanced manual torque application with knurled thumb head and 1 3/8" diameter for superior grip without tools
- Exceptional corrosion resistance thanks to 18-8 stainless steel construction in demanding environments
- High mechanical reliability with 80,000 psi tensile strength and Rockwell B83 hardness for heavy-duty use
- Quick assembly and secure fastening with fully threaded 1/2"-13 UNC coarse thread and Class 2A fit
- Stable seating and alignment provided by 7/8" collar diameter and raised round head profile
- Compliance with international regulations including RoHS 3 and REACH for global supply chain compatibility
- Versatile right-hand threading compatible with standard UNC components for broad industrial application
Professional Applications & Engineering Value
This heavy-duty thumb screw solves critical assembly challenges where frequent adjustments and tool-less operation are required. The 18-8 stainless steel construction ensures reliable performance in corrosive environments, while the knurled head texture and generous 1 3/8" diameter provide exceptional manual grip even with gloves. Engineers specify these UNC thumb screws for machinery access panels, electronic enclosures, and industrial jigs where 80,000 psi tensile strength prevents stripping under repeated use. The fully threaded design with Class 2A fit maintains consistent clamping force, and the integrated collar distributes load effectively, making these industrial thumb screws ideal for vibration-prone applications.
Specification Summary & Compliance
This 2" length thumb screw features precision 1/2"-13 UNC coarse threads with Class 2A thread fit per ASME B1.1 standards, ensuring reliable engagement with mating components. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, making these fasteners suitable for regulated industries including electronics, medical equipment, and industrial machinery where material restrictions apply.
