S-91185A523 5/16"-24 x 7/8" 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 grip with knurled Acetal plastic head for secure handling without tools
- Superior corrosion resistance from 18-8 stainless steel construction, ideal for harsh environments
- Precise thread engagement with Class 3A UNF fine threads ensuring reliable, vibration-resistant fastening
- Low-profile design for applications with limited clearance while maintaining easy adjustability
- Broad temperature compatibility with head operating from 32° to 180° F for versatile industrial use
- Full regulatory compliance meeting RoHS 3 and REACH standards for safe, sustainable manufacturing
- Durable plastic-metal combination providing electrical insulation and reduced part galling
Professional Applications & Engineering Value
This low-profile thumb screw combines the strength of 18-8 stainless steel with the functional advantages of an Acetal plastic head, engineered to solve common industrial fastening challenges. The knurled texture delivers exceptional non-slip grip for repeated manual adjustments in maintenance panels, electronic enclosures, and machinery guards. Its Class 3A UNF fine threads provide superior resistance to loosening under vibration, while the corrosion-resistant material ensures longevity in humid or chemical-exposed environments. The right-hand thread direction and fully threaded 7/8" length enable quick installation and consistent clamping force, making it ideal for assembly lines and field service applications where tool-free operation is critical.
Specification Summary & Compliance
This thumb screw features precision 5/16"-24 UNF fine threads with Class 3A fit for tight tolerance applications. The construction utilizes 18-8 stainless steel with an Acetal plastic head, providing reliable performance across a 32° to 180° F temperature range. Manufacturing and material compliance adhere to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and restricted substance control.
