S-98704A820 5/16"-18 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 torque application with a knurled acetal plastic head for secure hand-tightening without tools in tight spaces
- Superior corrosion resistance from 18-8 stainless steel construction, ideal for humid or corrosive industrial environments
- Reliable thread engagement and durability with a fully threaded UNC Class 3A fit, ensuring precise, vibration-resistant fastening
- Low-profile design for space-constrained assemblies, allowing use in compact equipment without protruding components
- Broad temperature tolerance (32° to 180° F) for stable performance in varied operational conditions
- Environmental and regulatory compliance with RoHS 3 and REACH standards, supporting sustainable and safe manufacturing practices
- Quick installation and adjustment through a 1/4" hex drive and right-hand coarse thread, speeding up assembly and maintenance tasks
Professional Applications & Engineering Value
This low-profile thumb screw is engineered to address common challenges in industrial settings, such as frequent adjustments and exposure to moisture. The 18-8 stainless steel body provides excellent corrosion resistance, reducing maintenance needs in machinery, electronics, and outdoor equipment. Combined with the acetal plastic head, it offers electrical insulation and a comfortable, non-slip surface for manual operation. The fully threaded UNC coarse thread and Class 3A fit ensure quick, secure fastening in applications like panel covers, clamps, and prototypes, where reliability and ease of use are critical. Its black finish adds an aesthetic touch while maintaining functionality in visible assemblies.
Specification Summary & Compliance
This thumb screw adheres to UNC thread standards with a Class 3A fit for high precision and strength. It features a 5/16"-18 coarse thread, 1 1/8" length, and fully threaded design for consistent performance. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), ensuring it meets environmental and safety regulations for industrial hardware.
