S-91746A462 1/2"-13 x 2 1/2" 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 with knurled round head design for secure tightening without tools in high-vibration environments
- Superior corrosion resistance from 18-8 stainless steel construction, ideal for humid or chemically exposed industrial settings
- Space-saving low-profile head allows installation in confined areas while maintaining full thumb-screw functionality
- Reliable coarse threading (1/2"-13 UNC) enables faster installation and reduced cross-threading risk compared to fine threads
- Optimized load distribution through Class 2A thread fit ensuring consistent engagement and vibration resistance
- High-strength performance with 80,000 psi tensile strength and Rockwell B83 hardness for demanding applications
- Regulatory compliance meeting RoHS 3 and REACH standards for international industrial use
Professional Applications & Engineering Value
This 18-8 stainless steel thumb screw solves critical access-panel and frequent-adjustment challenges across industrial equipment, electronic enclosures, and machinery guards. The knurled low-profile head provides positive grip even with oily hands or gloves, eliminating tool dependency while the coarse UNC threading resists jamming in aluminum or soft-material junctions. Engineers specify this partially threaded configuration for precise clamping force control, where the unthreaded shank prevents over-compression of sensitive components. The right-hand thread direction maintains intuitive operation consistency with standard fastening systems, reducing assembly errors in maintenance-heavy environments.
Specification Summary & Compliance
Manufactured to Class 2A thread fit tolerances ensuring interchangeability with standard UNC nuts and threaded holes. The 1/2"-13 UNC coarse thread maintains ASME B1.1 dimensional specifications while the 2 7/16" threaded length provides sufficient engagement depth. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations confirms suitability for global industrial supply chains and electronic applications.
