S-98704A630 1/4"-20 x 1 1/8" 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 grip and comfort with knurled acetal plastic head for secure hand-tightening without tools
- Superior corrosion resistance from 18-8 stainless steel construction for long-term reliability in harsh environments
- Precise thread engagement with Class 3A UNC coarse threads ensuring consistent fastening performance
- Low-profile design allows installation in tight spaces while maintaining easy manual operation
- Environmental compliance with RoHS 3 and REACH regulations for safe use in regulated industries
- Dual-material construction combining stainless steel strength with plastic head insulation and comfort
- Full threading provides maximum thread engagement along the entire screw length
Professional Applications & Engineering Value
This low profile thumb screw delivers exceptional value in applications requiring frequent adjustments or tool-less operation. The 18-8 stainless steel body provides excellent corrosion resistance, making it ideal for electronics enclosures, medical devices, and industrial equipment exposed to moisture or chemicals. The knurled acetal plastic head offers superior grip even with oily hands or when wearing gloves, while the plastic construction prevents galvanic corrosion when mating with dissimilar metals. The Class 3A UNC coarse threads ensure rapid installation and reliable holding power in various materials. This combination of materials and precision threading solves common assembly challenges by providing a durable, corrosion-resistant fastening solution that eliminates the need for tools, reducing assembly time and improving maintenance accessibility in tight spaces.
Specification Summary & Compliance
This thumb screw features 1/4"-20 UNC coarse threads with Class 3A thread fit for precise dimensional accuracy and reliable performance. The product maintains compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for industrial applications with strict material restrictions. Manufacturing follows standard specifications for right-hand thread direction and fully threaded construction, providing consistent performance across production applications.
