S-99607A249 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 manual grip and torque application with knurled round head design, eliminating the need for tools in frequent adjustments
- Excellent corrosion resistance in harsh environments thanks to durable 18-8 Stainless Steel construction
- Reliable, quick engagement and high load-bearing capacity from coarse 5/16"-18 UNC threads and 80,000 psi tensile strength
- Consistent threading performance and interchangeability ensured by Class 2A thread fit and full 1" length threading
- Enhanced stability and alignment during hand-tightening provided by the flared collar design
- Long-term durability and wear resistance with Rockwell B85 hardness for repeated use
- Safe for use in regulated industries with full compliance to RoHS 3 and REACH environmental standards
Professional Applications & Engineering Value
This 18-8 Stainless Steel Thumb Screw is engineered to address common industrial challenges where tool-free, rapid access and reliable fastening are critical. The knurled head and flared collar provide exceptional grip and prevent slippage, making it ideal for panels, access doors, and machinery covers in maintenance-heavy environments. Its coarse UNC threads and Class 2A fit ensure quick installation and vibration resistance, reducing assembly time and minimizing loosening in dynamic applications. The fully threaded 1" length offers versatile clamping across various material thicknesses, while the stainless steel material resists corrosion from moisture, chemicals, and outdoor exposure, extending service life in industrial, electronic, and automotive settings.
Specification Summary & Compliance
This thumb screw adheres to UNC thread standards with a Class 2A thread fit for consistent dimensional accuracy. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free of hazardous substances. Manufacturing specifications include a 5/16"-18 thread size, 1" length, and fully threaded design, providing reliable performance in accordance with industrial fastening requirements.
