S-91185A857 5/16"-24 x 1" 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 operation with a multi-lobe thumb head for superior grip without tools, ideal for frequent adjustments.
- Enhanced corrosion resistance from 18-8 stainless steel construction, ensuring long-term reliability in harsh environments.
- Durable, temperature-resistant head made of black Acetal Plastic, maintaining integrity from 32° to 180°F.
- Precise, secure fastening with Class 3A fine UNF threading for tight tolerances and reduced risk of loosening.
- Maximum thread engagement due to fully threaded design, providing consistent holding power along the entire 1" length.
- Compliance with safety standards including RoHS 3 and REACH, ensuring safe use in regulated industrial applications.
- Right-hand thread direction for intuitive installation and removal, compatible with standard UNF nuts and components.
Professional Applications & Engineering Value
This 5/16"-24 UNF thumb screw combines 18-8 stainless steel with a black Acetal Plastic multi-lobe head to address common industrial challenges like corrosion, frequent manual adjustments, and temperature variations. The Class 3A fine threading ensures a precise fit, minimizing vibration-induced loosening in machinery, electronic enclosures, and assembly jigs. Its fully threaded design allows for consistent clamping force, while the plastic head insulates against heat and electrical conductivity. Ideal for applications requiring tool-free access, such as panel fastening, prototyping, and maintenance covers, this screw delivers reliability and user convenience without compromising on RoHS and REACH compliance for global safety standards.
Specification Summary & Compliance
This thumb screw adheres to UNF thread standards with a Class 3A thread fit for high precision in fine threading applications. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental and health safety. The specifications include a thread size of 5/16"-24, right-hand direction, and a length of 1", designed for reliable performance in industrial settings.
