S-90200A546 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
- Superior hand-tightening grip with knurled round head design for secure manipulation without tools in tight spaces
- Enhanced corrosion resistance through black-oxide steel coating for extended service life in industrial environments
- Reliable high-strength performance with 70,000 psi tensile strength and Rockwell B84 hardness for demanding applications
- Quick installation efficiency with fully threaded UNC coarse design and Class 2A thread fit for smooth engagement
- Low-profile clearance advantage with reduced head height for applications with limited space constraints
- Right-hand thread compatibility for standard assembly procedures and replacement convenience
- Regulatory compliance assurance meeting RoHS 3 and REACH standards for safe usage in regulated industries
Professional Applications & Engineering Value
This black-oxide steel thumb screw delivers exceptional value in industrial settings where tool-free adjustments and reliable fastening are critical. The knurled low-profile head provides positive grip even with oily hands or gloves, solving accessibility challenges in confined equipment spaces. With its UNC coarse threading and Class 2A thread fit, installation becomes significantly faster while maintaining precise alignment in machinery, electronic enclosures, and assembly jigs. The combination of 70,000 psi tensile strength and corrosion-resistant coating ensures long-term performance in manufacturing environments, reducing maintenance frequency and replacement costs. These fully threaded thumb screws are particularly valuable for applications requiring frequent disassembly, such as access panels, calibration points, and modular system components.
Specification Summary & Compliance
Manufactured to precise dimensional standards with 1/4"-20 UNC coarse threads and Class 2A thread fit tolerance for consistent performance. The black-oxide steel construction provides both durability and corrosion resistance. This product is fully compliant with RoHS 3 (2015/863/EU) with exemption 6(a)-I and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for industrial applications worldwide.
