S-91746A772 1/4"-20 x 2" 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
- Superior grip and tool-free operation with a 1" knurled round head for easy hand tightening and adjustment
- Excellent corrosion resistance provided by 18-8 stainless steel material, ideal for harsh environments
- High mechanical strength and durability with an 80,000 psi tensile strength and Rockwell B83 hardness rating
- Reliable and precise threading with a 1/4"-20 UNC coarse thread and Class 2A fit for consistent engagement
- Optimized for space-constrained applications due to its low-profile round head and partially threaded design
- Enhanced installation versatility featuring both a knurled thumb head and a slotted drive for multiple fastening options
- Compliant with global environmental standards, meeting RoHS 3 and REACH regulations for safe use
Professional Applications & Engineering Value
This 18-8 Stainless Steel Thumb Screw is engineered to address common industrial challenges such as frequent adjustments and exposure to corrosive elements. The knurled head offers a secure, non-slip grip, allowing for quick manual tightening without tools, which is essential in maintenance panels, electronic enclosures, and machinery guards. Its UNC coarse thread and Class 2A fit ensure fast assembly and reliable hold in materials like metal and plastic, reducing installation time and minimizing cross-threading risks. The partially threaded shank provides focused clamping force, making it ideal for applications where vibration resistance and repeated access are critical. With high tensile strength and corrosion-resistant properties, this thumb screw delivers long-term performance in demanding settings such as automotive, aerospace, and industrial equipment.
Specification Summary & Compliance
This thumb screw adheres to precise dimensional standards, including a 1/4"-20 UNC coarse thread with Class 2A thread fit for consistent accuracy and ease of use. It is manufactured from 18-8 Stainless Steel, ensuring durability and resistance to rust. The product complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety and environmental responsibility for industrial and commercial applications.
