S-91185A849 5/16"-24 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
- Effortless manual tightening and loosening with the multi-lobe thumb head design, eliminating the need for tools in frequent adjustments
- Superior corrosion resistance in various environments due to the 18-8 Stainless Steel construction, ensuring long-term reliability
- Comfortable and secure grip provided by the black Acetal Plastic head, even with wet or oily hands
- Precise and reliable fastening with Class 3A fine (UNF) threads, offering excellent vibration resistance in demanding applications
- Durable performance in moderate temperature conditions with a head temperature range of 32° to 180° F
- Full threading for maximum engagement and holding power along the entire 1/2" length
- Compliance with strict environmental regulations including RoHS 3 and REACH, making it suitable for global supply chains
Professional Applications & Engineering Value
This 5/16"-24 UNF Thumb Screw is engineered to solve common industrial challenges where tool-less, frequent access is required. The 18-8 Stainless Steel body provides excellent resistance to rust and corrosion, ideal for machinery, electronic enclosures, and outdoor equipment. The black Acetal Plastic multi-lobe head offers an ergonomic grip that reduces hand fatigue during repeated use, while its temperature resistance ensures performance in varying operational conditions. The Class 3A fine thread ensures a tight, secure fit that minimizes loosening from vibrations, making these thumb screws a reliable choice for precision assemblies, maintenance panels, and adjustable components in manufacturing and commercial settings.
Specification Summary & Compliance
This thumb screw features a 5/16"-24 UNF thread with a Class 3A thread fit for high precision and fine thread spacing. It is fully threaded with a right-hand thread direction and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance standards, ensuring it is free of hazardous substances for safe use in industrial and commercial applications worldwide.
