S-91830A723 3/8"-16 x 1 1/2" Thumb Screws

Key Features & Benefits at a Glance

• Effortless manual tightening with a large 1-3/8" knurled round head for superior grip and torque application without tools.
• Exceptional corrosion resistance provided by 18-8 Stainless Steel, ensuring long-term reliability in harsh industrial environments.
• High mechanical strength with a tensile strength of 80,000 psi and Rockwell B83 hardness for dependable performance under load.
• Reliable and precise engagement due to the 3/8"-16 UNC coarse thread with Class 2A fit, enabling quick assembly and vibration resistance.
• Full 1-1/2" thread length offers versatile fastening depth for a wide range of material thicknesses.
• Compliant with major environmental regulations including RoHS 3 and REACH, making it suitable for global supply chains and sensitive applications.
• Durable, raised head profile enhances usability and provides a robust structure for repeated manual adjustments.

Professional Applications & Engineering Value

This heavy-duty thumb screw is engineered to solve common industrial fastening challenges where tool-free access and frequent adjustments are required. The 18-8 Stainless Steel construction ensures excellent resistance to rust and corrosion, making it ideal for use in electrical enclosures, machinery guards, and assembly jigs. The knurled head and raised profile deliver a secure, non-slip grip, reducing operator fatigue and improving efficiency in maintenance and production lines. Its 3/8"-16 UNC coarse thread with Class 2A fit allows for quick installation and reliable holding power, minimizing the risk of cross-threading. This design is particularly valuable in applications requiring rapid disassembly and reassembly, such as in prototyping, automotive, and electronics industries, where durability and ease of use are critical.

Specification Summary & Compliance

This thumb screw adheres to precise dimensional standards, including a Class 2A thread fit for consistent engagement and UNC coarse threading (3/8"-16) per industry norms. It is manufactured from 18-8 Stainless Steel with 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 meets stringent environmental and safety requirements for industrial use.