S-97246A111 1/4"-20 x 1 1/2" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with galvanic-barrier coated 18-8 stainless steel construction, ideal for harsh industrial environments.
• Efficient self-drilling installation thanks to the integrated No. 5 drill tip, eliminating the need for pre-drilling and saving labor time.
• High-strength thread forming with UNC coarse threads creates secure, vibration-resistant fastenings in steel, stainless steel, and sheet metal.
• Enhanced load distribution from the integrated flange, reducing surface pressure and preventing material damage.
• Robust external hex drive allows for high-torque application with standard tools, ensuring a tight, reliable fit.
• Maximum drilling capability of 1/2" thickness, providing versatility for a wide range of metal fabrication and construction tasks.
• Regulatory compliance and safety with RoHS 3, ensuring the screw is free from hazardous substances for global use.

Professional Applications & Engineering Value

Engineered for demanding metalworking and construction projects, these 1/4"-20 hex head tapping screws deliver exceptional value by solving common installation challenges. The thread forming (CSD) design with UNC coarse threads displaces material to create strong, strip-resistant threads without generating chips, making them perfect for steel, stainless steel, and sheet metal assemblies. The galvanic-barrier coating on 18-8 stainless steel provides an extra layer of protection against galvanic corrosion when fastened to dissimilar metals, extending service life in structural frameworks, HVAC systems, and industrial machinery. The combination of a fully threaded shank and a flanged hex head ensures uniform clamping force and easy wrench access, streamlining assembly lines and reducing the risk of joint failure under dynamic loads.

Specification Summary & Compliance

This screw features a 1/4"-20 UNC thread with coarse spacing and a right-hand direction, conforming to standard inch system specifications for dimensional accuracy. The thread forming tapping method (CSD type) and fully threaded round shank ensure consistent performance. It is manufactured from 18-8 stainless steel with a galvanic-barrier coating and complies with RoHS 3 (2015/863/EU) regulations, confirming its suitability for environmentally conscious and rigorous industrial applications.