S-93015A217 1/4"-20 x 2 1/2" 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 corrosion resistance with 18-8 stainless steel construction for long-lasting performance in harsh environments
- Exceptional tensile strength of 80,000 psi ensures reliable fastening under heavy loads and vibration
- Enhanced grip and torque application through knurled head texture, enabling easy hand-tightening without tools
- Optimized thread engagement with UNC coarse threads and Class 2A fit for quick assembly and secure holding power
- Low-profile round head design provides smooth surface transition while maximizing clearance in confined spaces
- Extended tip facilitates alignment during installation, reducing assembly time and preventing cross-threading
- Comprehensive regulatory compliance with RoHS 3 and REACH standards for environmentally responsible manufacturing
Professional Applications & Engineering Value
This 18-8 stainless steel thumb screw delivers critical performance advantages in industrial applications where corrosion resistance, manual adjustability, and high strength are paramount. The knurled head texture provides exceptional grip even with gloved hands, while the extended tip guides precise alignment in machinery, electronic enclosures, and assembly fixtures. With Rockwell B83 hardness and 80,000 psi tensile strength, it withstands repeated tightening cycles in maintenance panels, access doors, and adjustable components. The 1/4"-20 UNC coarse threads ensure rapid installation in aluminum extrusions, plastic housings, and sheet metal applications, making it ideal for production lines requiring frequent access or adjustments without compromising structural integrity.
Specification Summary & Compliance
This thumb screw features 1/4"-20 UNC coarse threads with Class 2A thread fit for standard industrial applications. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The partially threaded design (2 1/8" thread length) and extended tip (0.125" length, 11/64" diameter) provide optimal functionality for alignment and secure fastening in various material thicknesses.
