S-91830A639 5/16"-18 x 1" 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 grip and handling with knurled head texture for secure manual tightening in industrial environments
- Excellent corrosion resistance thanks to 18-8 stainless steel construction for long-lasting performance
- High mechanical strength with 80,000 psi tensile strength and Rockwell B83 hardness for demanding applications
- Precise thread engagement through Class 2A thread fit and UNC coarse threads ensuring reliable fastening
- Quick installation and adjustment with fully threaded design and right-hand thread direction
- Enhanced ergonomic control from raised round head profile and generous 1¼" head diameter
- Regulatory compliance assurance meeting RoHS 3 and REACH environmental standards
Professional Applications & Engineering Value
This 5/16"-18 UNC thumb screw delivers exceptional engineering value where frequent adjustments and tool-free operation are critical. The 18-8 stainless steel construction provides reliable corrosion resistance in manufacturing, electronics, and outdoor equipment applications. The knurled head texture and generous diameter ensure positive grip even with gloved hands, while the coarse UNC threading enables rapid installation without cross-threading risks. The fully threaded design maintains consistent clamping force across the entire 1" length, making it ideal for panel fastening, access covers, and machinery adjustments where vibration resistance and quick service access are paramount.
Specification Summary & Compliance
This thumb screw features 5/16"-18 UNC coarse threads with Class 2A thread fit for precise manufacturing tolerances. The right-hand thread direction and fully threaded configuration ensure standard installation compatibility. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming environmental responsibility. Critical dimensions include 1" length, 1¼" head diameter, and 5/8" collar diameter, all manufactured to industrial standards for consistent performance across production runs.
