S-91746A900 1/4"-20 x 1 1/2" Thumb Screws

Key Features & Benefits at a Glance

• Enhanced manual operation with a knurled round head providing superior grip and torque application without tools
• Exceptional corrosion resistance from 18-8 stainless steel construction, ideal for harsh industrial environments
• High tensile strength of 80,000 psi ensures reliable fastening under mechanical stress and vibration
• Precise Class 2A thread fit with UNC coarse threading for quick assembly and secure engagement
• Fully threaded design offers consistent clamping force along the entire 1 1/2" length
• Rockwell B83 hardness maintains thread integrity and resists wear during repeated adjustments
• Compliance with RoHS 3 and REACH regulations guarantees safe use in commercial and industrial applications

Professional Applications & Engineering Value

This 1/4-20 thumb screw delivers outstanding performance in applications requiring frequent adjustments and tool-free operation. The knurled head with 5/16" diameter and 1/2" height ensures maximum finger grip, reducing installation time in assembly lines, electronic enclosures, and machinery access panels. Constructed from 18-8 stainless steel, it resists oxidation and chemical exposure, while the fully threaded UNC coarse design provides rapid engagement and vibration resistance. With 80,000 psi tensile strength and Class 2A thread fit, it maintains clamping force in dynamic environments, making it ideal for OEM equipment, industrial controls, and regulatory-compliant assemblies.

Specification Summary & Compliance

This thumb screw features a 1/4"-20 UNC coarse thread with Class 2A fit for standard dimensional accuracy and easy assembly. It adheres to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring environmental safety. The right-hand thread direction and fully threaded 1 1/2" length provide consistent performance across industrial applications.