S-91746A456 3/8"-16 x 2 1/2" Thumb Screws

Key Features & Benefits at a Glance

• Effortless manual operation with a knurled thumb head for superior grip and quick adjustments without tools
• Exceptional corrosion resistance thanks to 18-8 stainless steel construction, ideal for harsh environments
• Reliable strength and durability with 80,000 psi tensile strength and Rockwell B83 hardness for long-lasting performance
• Secure and precise fastening with UNC coarse threads and Class 2A thread fit, reducing cross-threading risks
• Space-saving low-profile design allows use in tight spaces while maintaining easy handling
• Optimized thread engagement with partially threaded shank for controlled clamping and vibration resistance
• Compliance with environmental standards including RoHS 3 and REACH, ensuring safe use in regulated industries

Professional Applications & Engineering Value

This 3/8"-16 thumb screw in 18-8 stainless steel is engineered to address common industrial fastening challenges, such as frequent adjustments and exposure to corrosive elements. The low-profile knurled head provides a secure grip for manual operation, eliminating the need for tools in maintenance-heavy applications like machinery panels, electronic enclosures, and assembly jigs. Its UNC coarse threads and Class 2A fit ensure quick installation and reliable hold, reducing assembly time and minimizing thread damage. The partially threaded design concentrates clamping force where needed, enhancing stability in dynamic environments. With high tensile strength and corrosion resistance, this screw is a dependable choice for industrial thumb screw applications requiring durability and compliance with RoHS and REACH standards.

Specification Summary & Compliance

This thumb screw features precise UNC 3/8"-16 coarse threads with a Class 2A thread fit for consistent dimensional accuracy and ease of assembly. Manufactured from 18-8 stainless steel, it meets industry standards for mechanical properties, including a tensile strength of 80,000 psi and Rockwell B83 hardness. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for global industrial use.