S-99607A247 5/16"-18 x 1/2" 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 thanks to 18-8 stainless steel construction, ideal for demanding industrial environments.
- Exceptional manual grip and torque application provided by the knurled round head and flared collar design, enabling easy hand-tightening without tools.
- High mechanical strength and durability with 80,000 psi tensile strength and Rockwell B85 hardness for reliable performance under load.
- Fast and secure coarse threading with 5/16"-18 UNC Class 2A fit, ensuring quick assembly and vibration resistance.
- Full 1/2" length threading offers maximum engagement and holding power across the entire fastener length.
- Compliance with major environmental regulations including RoHS 3 and REACH, making it suitable for global supply chains.
- Right-hand thread direction provides standard, intuitive installation for common industrial applications.
Professional Applications & Engineering Value
This 18-8 stainless steel thumb screw is engineered to solve critical challenges in machinery, electronics, and panel assembly where frequent access and tool-less operation are required. The knurled head texture and flared collar deliver a secure, non-slip grip, reducing installation time and preventing damage to components. Its coarse UNC threading and Class 2A thread fit ensure rapid engagement and reliable fastening in materials prone to stripping. With high tensile strength and corrosion resistance, it withstands harsh conditions, making it ideal for industrial maintenance, enclosures, and adjustable fixtures that demand both durability and user convenience.
Specification Summary & Compliance
This thumb screw adheres to UNC thread standards with a Class 2A thread fit for consistent dimensional accuracy. It is manufactured from 18-8 stainless steel and is fully threaded along its 1/2" length. The product is confirmed to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting stringent international environmental and safety regulations for industrial components.
