S-91746A820 1/2"-13 x 1 1/2" Thumb Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction for long-lasting performance in harsh environments
• Excellent hand-tightening capability thanks to the 1" diameter knurled head that provides secure grip without tools
• High mechanical strength with 80,000 psi tensile strength and Rockwell B83 hardness for demanding applications
• Quick installation and removal through coarse UNC threading and partial threading design
• Versatile compatibility with Class 2A thread fit ensuring reliable engagement with standard components
• Low-profile round head design for applications where space constraints are a concern
• Environmental compliance meeting RoHS 3 and REACH regulations for safe usage across industries

Professional Applications & Engineering Value

This 18-8 stainless steel thumb screw with 1/2"-13 UNC coarse threading delivers exceptional value in industrial settings where frequent adjustments and secure fastening are paramount. The knurled head texture provides positive grip even with gloved hands, eliminating the need for tools in maintenance-heavy environments. The partial threading design allows for quick engagement while maintaining structural integrity, making it ideal for access panels, machinery guards, and electronic enclosures. With its corrosion-resistant properties and 80,000 psi tensile strength, this fastener solves common challenges of component accessibility while ensuring reliable performance in manufacturing, automation, and equipment assembly applications where repeated manual operation is required.

Specification Summary & Compliance

This thumb screw features precision 1/2"-13 UNC coarse threads with Class 2A thread fit for consistent engagement and reliable performance. The fastener maintains dimensional accuracy with a 1" head diameter, 1-1/2" overall length, and 1-7/16" thread length. Manufacturing complies with industry standards for 18-8 stainless steel fasteners, ensuring consistent Rockwell B83 hardness and mechanical properties. The product is fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant, meeting the latest environmental regulations for hazardous substance restrictions.