S-91746A475 1/4"-28 x 1" Thumb Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• Excellent hand-tightening grip thanks to the fully knurled round head design, eliminating the need for tools
• High mechanical strength and durability with 80,000 psi tensile strength and Rockwell B83 hardness for reliable, long-term performance
• Precise and secure fastening ensured by the Class 2A thread fit and 1/4"-28 UNF fine thread for vibration resistance
• Full-length threading provides maximum engagement and holding power along the entire 1" length
• Simplified assembly and maintenance with a right-hand thread direction for intuitive installation
• Compliance with global environmental standards, including RoHS 3 and REACH, for safe use in regulated industries

Professional Applications & Engineering Value

This 18-8 stainless steel thumb screw is engineered to solve common industrial fastening challenges where tool-less access, corrosion resistance, and high strength are critical. The knurled round head provides exceptional manual grip, making it perfect for frequent adjustments on access panels, machinery guards, and electronic enclosures. Its fully threaded design and 1/4"-28 UNF fine thread offer superior holding power and vibration resistance in precision assemblies. Manufactured from durable stainless steel with high tensile strength, it withstands demanding environments while complying with RoHS and REACH regulations, ensuring safety and reliability in commercial and industrial applications.

Specification Summary & Compliance

This thumb screw features a 1/4"-28 UNF thread with a Class 2A fit for precise dimensional accuracy. It is fully threaded over a 1" length with a right-hand thread direction. The product is manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets stringent environmental and safety standards for industrial use.