S-90410A326 1/4"-20 x 1" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 410 stainless steel construction, ideal for harsh industrial environments and long-term reliability.
• Efficient self-tapping installation with Type F thread cutting design, eliminating the need for pre-tapped holes in materials like brass, cast iron, and sheet metal.
• High torque transmission via Phillips No. 3 drive, ensuring secure fastening and reducing the risk of tool slippage during assembly.
• Full thread engagement along the 1-inch length for maximum holding power and uniform stress distribution in demanding applications.
• Wide material compatibility with coarse UNC 1/4"-20 threads, providing strong grip in various substrates without stripping.
• Durable pan head design with a rounded profile for a low-profile finish and enhanced resistance to snagging or damage.
• Compliance with environmental standards including RoHS 3 and REACH, ensuring safe use in regulated industries and global markets.

Professional Applications & Engineering Value

These 1/4-20 UNC thread cutting tapping screws are engineered to address common fastening challenges in industrial settings, such as securing components in brass, cast iron, and sheet metal without pre-threading. The 410 stainless steel material offers excellent strength and corrosion resistance, reducing maintenance costs in humid or corrosive environments. With a fully threaded design and coarse thread spacing, these screws provide rapid installation and reliable pull-out resistance, minimizing assembly time and enhancing structural integrity. The Phillips No. 3 drive ensures consistent torque application, while the Type F tapping method creates precise threads for vibration-resistant connections in machinery, automotive, and construction applications.

Specification Summary & Compliance

This product adheres to UNC thread standards with coarse spacing and right-hand threading, ensuring compatibility with standard inch-based systems. Dimensions include a 1/4"-20 thread size, 1-inch length, and pan head style for consistent performance. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, confirming the absence of hazardous substances and supporting sustainable manufacturing practices. Designed for use with a No. 7 drill bit (0.201" diameter), it guarantees precise hole preparation and optimal thread engagement in applicable materials.