S-91746A792 5/16"-18 x 2 1/4" 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
- Exceptional corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh environments and long-term reliability.
- Superior hand-tightening grip provided by the 3/4" diameter knurled thumb head, ensuring secure and effortless installation without tools.
- High mechanical strength with 80,000 psi tensile strength and Rockwell B83 hardness for dependable performance under load.
- Reliable and quick engagement thanks to the 5/16"-18 UNC coarse threads, designed for faster assembly and reduced cross-threading risk.
- Versatile low-profile design with a round head and partial threading, offering flexibility for various panel and fixture applications.
- Precision thread fit with Class 2A tolerance, ensuring consistent and smooth mating with standard nuts and threaded holes.
- Compliance with environmental standards, being RoHS 3 and REACH compliant, making it suitable for regulated industries.
Professional Applications & Engineering Value
This 18-8 Stainless Steel Thumb Screw is engineered to address common industrial challenges such as frequent adjustments and exposure to corrosive elements. The knurled head provides an enhanced grip, reducing slippage and enabling quick manual tightening in tight spaces, which is crucial for maintenance panels, electronic enclosures, and machinery covers. Its coarse UNC threads facilitate rapid assembly and disassembly, minimizing downtime in production environments. Made from durable stainless steel, it resists rust and wear, ensuring long-term performance in applications like automotive, aerospace, and outdoor equipment. The low-profile round head and partial threading allow for secure fastening without protruding, making it ideal for safety and aesthetic considerations in industrial thumb screw uses.
Specification Summary & Compliance
This thumb screw adheres to UNC thread standards with a Class 2A thread fit for precise dimensional accuracy and compatibility. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances. Manufacturing specifications include a thread size of 5/16"-18, coarse thread spacing, and partial threading, designed in accordance with general industrial fastening norms for reliable performance.
