S-91746A411 1/4"-20 x 3/4" 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 and torque application with a fully knurled round head for secure handling in industrial environments
- Superior corrosion resistance and durability thanks to 18-8 stainless steel construction, ideal for harsh conditions
- High tensile strength of 80,000 psi ensures reliable fastening under heavy-duty mechanical stress
- Precise thread engagement with UNC coarse spacing and Class 2A fit for quick assembly and reduced cross-threading risks
- Full threading along the 3/4" length provides maximum adjustability and holding power in various applications
- Narrow profile round head design allows easy access in confined spaces while maintaining a low profile
- Compliance with RoHS 3 and REACH regulations guarantees safe, environmentally responsible use in global markets
Professional Applications & Engineering Value
This 1/4-20 knurled thumb screw in 18-8 stainless steel addresses common industrial challenges by combining robust materials with user-friendly design. The knurled head texture ensures a firm grip, even with gloved hands or in oily conditions, reducing slippage and improving operational efficiency in manual fastening tasks. Its UNC coarse thread and Class 2A fit enable rapid installation and removal, minimizing downtime in assembly lines, machinery adjustments, and equipment maintenance. With a Rockwell B83 hardness and 80,000 psi tensile strength, it withstands repetitive use and high-stress environments, from electronic enclosures to automotive components, ensuring long-term reliability without frequent replacements.
Specification Summary & Compliance
This thumb screw features a 1/4"-20 UNC thread with coarse spacing and Class 2A thread fit for precise dimensional accuracy, ensuring consistent performance in inch-based systems. It is manufactured from 18-8 stainless steel with a fully threaded 3/4" length and right-hand thread direction. The product complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) standards, confirming its adherence to environmental and safety regulations for industrial use.
