S-91744A170 3/8"-16 x 2" Thumb Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• Effortless manual installation and removal thanks to the large spade head design and 15/16" head height for maximum grip
• Enhanced stability and load distribution from the integrated flange, reducing the risk of surface damage
• Reliable and quick coarse threading with UNC 3/8"-16 and Class 2A fit for secure fastening in various materials
• Full 2-inch threading provides consistent holding power along the entire screw length
• Compliance with strict environmental standards including RoHS 3 and REACH, ensuring safe and sustainable use
• Right-hand thread direction offers intuitive, standard operation for maintenance and assembly tasks

Professional Applications & Engineering Value

This heavy-duty thumb screw is engineered to solve common industrial fastening challenges where tool-free access and corrosion resistance are critical. The 18-8 stainless steel material ensures long-term durability in moist or chemically aggressive settings, preventing rust and maintaining structural integrity. The spade head and flanged design work together to provide a secure, non-slip grip for operators, even when wearing gloves, while the flange acts as a built-in washer to distribute clamping force and protect sensitive surfaces. With its fully threaded UNC coarse thread and Class 2A fit, it delivers rapid installation and high vibration resistance in equipment panels, machinery guards, and electronic enclosures, reducing assembly time and minimizing the need for additional tools or components.

Specification Summary & Compliance

This thumb screw adheres to UNC thread standards with a size of 3/8"-16, Class 2A thread fit for consistent dimensional accuracy, and a coarse thread spacing. It is fully threaded over a 2-inch length with a 0.375" thread diameter. The product is manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free of restricted hazardous substances and suitable for use in regulated industries.