S-91185A527 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
- Superior corrosion resistance with 18-8 stainless steel construction, ideal for humid or chemically exposed environments
- Enhanced grip and torque control from the knurled Acetal plastic head, reducing slippage during manual adjustments
- Precise, reliable fastening with Class 3A UNF fine threads, ensuring tight tolerances and vibration resistance in assemblies
- Low-profile round head design minimizes protrusion, making it suitable for space-constrained applications
- Wide thermal compatibility with a head temperature range of 32° to 180°F, maintaining performance in varied operating conditions
- Full thread engagement along the 1" length provides consistent clamping force and ease of installation
- Compliance with global regulations including RoHS 3 and REACH, ensuring safe use in industrial and electronic sectors
Professional Applications & Engineering Value
This low-profile thumb screw combines the strength of 18-8 stainless steel with the ergonomic advantages of a knurled Acetal plastic head, addressing common challenges in manual assembly and maintenance. The fine UNF threads (5/16"-24) and Class 3A fit deliver exceptional precision, reducing the risk of cross-threading and ensuring secure fastening in industrial equipment, electronics enclosures, and instrumentation. The Acetal head offers excellent electrical insulation and resistance to wear, while the knurling provides a non-slip surface—even with gloves. This design is particularly valuable in applications requiring frequent adjustments, such as panel fastening, prototyping, and machinery calibration, where durability and user safety are paramount.
Specification Summary & Compliance
This thumb screw features a 5/16"-24 UNF fine thread with Class 3A tolerance for high precision, fully threaded along a 1" length. The head is constructed from Acetal plastic with a knurled texture and low-profile round shape. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to environmental and safety standards for industrial components.
