S-98704A905 5/16"-24 x 5/8" Thumb Screws
Thumb Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Enhanced manual grip and torque application with a knurled acetal plastic head, reducing slippage in industrial environments.
- Superior corrosion resistance and durability provided by 18-8 stainless steel construction, ideal for demanding applications.
- Precise and secure fastening with Class 3A fine UNF threading, ensuring reliable fit and vibration resistance.
- Easy installation and adjustment thanks to the low-profile round head and 1/4" hex drive, compatible with standard tools.
- Broad temperature tolerance from 32° to 180°F, maintaining performance in varied operational conditions.
- Full thread engagement along the 5/8" length for maximum holding power and alignment in assemblies.
- Compliance with environmental regulations including RoHS 3 and REACH, supporting sustainable and safe manufacturing practices.
Professional Applications & Engineering Value
This 5/16"-24 UNF thumb screw is engineered to address common challenges in industrial settings, such as frequent adjustments and exposure to corrosive elements. The 18-8 stainless steel body offers excellent strength and rust resistance, while the black knurled acetal plastic head ensures a firm grip even with gloves or oily hands, reducing installation time and tool dependency. Its Class 3A fine thread provides tight tolerances for secure connections in precision equipment, electronics, and machinery, minimizing loosening from vibrations. Fully threaded and rated for moderate temperatures, it delivers consistent performance in assembly, maintenance, and prototyping workflows, enhancing efficiency and reliability.
Specification Summary & Compliance
This thumb screw adheres to UNF thread standards with a Class 3A fit for high precision and fine thread spacing. Dimensions include a 5/16"-24 thread size, 5/8" length, and 1" head diameter. It is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances and suitable for global industrial use.
