S-90113A163 1/4"-20 x 3/4" 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
- Tool-free installation and removal with external hex thumb head for rapid assembly/disassembly in maintenance and prototyping applications
- Superior corrosion resistance from 18-8 stainless steel construction, ideal for demanding industrial environments and outdoor applications
- High mechanical strength with 80,000 PSI tensile rating and Rockwell B83 hardness for reliable performance under heavy loads
- Precision thread engagement with Class 2A UNC coarse threading ensuring consistent fit and vibration resistance
- Full regulatory compliance meeting RoHS 3 and REACH standards for global manufacturing and environmental safety requirements
- Optimized grip design featuring 1/2" head width and 3/8" head height for comfortable manual operation without slipping
- Universal compatibility with 1/4"-20 UNC threaded components across industrial equipment and machinery
Professional Applications & Engineering Value
This 18-8 stainless steel thumb screw delivers exceptional value in applications requiring frequent access or adjustment, such as equipment panels, access doors, and jig fixtures. The combination of fully threaded UNC coarse threading and external hex thumb head eliminates tool dependency while maintaining secure fastening. The 80,000 PSI tensile strength and corrosion-resistant properties address common industrial challenges of component durability and environmental degradation. Engineers specify these thumb screws for maintenance-heavy environments where rapid disassembly is critical, while the Class 2A thread fit ensures consistent performance across production runs without cross-threading issues.
Specification Summary & Compliance
Manufactured to precise dimensional standards with 1/4"-20 UNC coarse threads meeting Class 2A thread fit tolerances for reliable engagement. The 3/4" length and fully threaded design provide maximum fastening versatility. Compliance certifications include RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and global market acceptance. Material specifications confirm 18-8 stainless steel composition with Rockwell B83 hardness and 80,000 PSI tensile strength for consistent mechanical performance.
