S-90122A345 1/4"-20 x 2 1/2" Tapping Screws
Tapping Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
Installation & Application
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Key Features & Benefits at a Glance
- Eliminates pre-drilling requirements with integrated drilling tip that penetrates up to 0.236" thick aluminum and sheet metal
- Superior corrosion resistance through ultra-corrosion-resistant alloy steel coating for extended service life in harsh environments
- Maximum torque transmission with external hex head design that prevents stripping during high-torque installation
- Secure, vibration-resistant fastening through thread forming action that creates strong, permanent threads in base materials
- Enhanced load distribution with integrated flange that eliminates the need for separate washers
- Reliable coarse thread engagement with UNC 1/4"-20 threading for quick installation in various materials
- Full-length threading ensures consistent holding power along the entire 2-1/2" length
Professional Applications & Engineering Value
These ultra-corrosion-resistant alloy steel tapping screws solve critical industrial fastening challenges in aluminum and sheet metal applications. The thread forming design creates precise, strong threads without generating chips, eliminating cleanup while providing superior pull-out resistance. The No. 4 drilling tip penetrates materials up to 0.236" thick without pre-drilling, significantly reducing installation time and labor costs. The external hex head delivers maximum torque application capability, while the integrated flange provides enhanced clamping force distribution. These CSD tapping screws are engineered for demanding environments where corrosion resistance and installation efficiency are paramount, making them ideal for HVAC systems, electrical enclosures, and metal fabrication projects.
Specification Summary & Compliance
This 1/4"-20 UNC coarse thread tapping screw features Class 2A thread tolerances and fully threaded design with right-hand threading. The screw meets industry standards for thread forming applications and is RoHS 3 (2015/863/EU) Compliant, ensuring environmental regulatory compliance for industrial use. Manufactured with precision UNC thread spacing and external hex drive configuration for reliable performance in aluminum and sheet metal fastening applications.
