S-94209A555 8-32 x 7/8" Tapping Screws
Tapping Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior corrosion resistance with black protective coating for extended service life in demanding environments
- Enhanced torque transmission through Torx Plus IP20 drive system, reducing cam-out and tool wear
- Exceptional holding power with Tri-Lobe shank design that creates secure, vibration-resistant fastenings
- Reliable thread forming capability for strong, permanent threads in aluminum, brass, and copper materials
- Optimized for coarse thread applications with UNC 8-32 threading providing quick installation and strong engagement
- Full 7/8" threading ensures maximum grip length and load distribution across the entire fastener
- Precision dimensional control with length tolerance of -0.03" to 0" for consistent performance
Professional Applications & Engineering Value
These thread forming screws are specifically engineered to solve common fastening challenges in aluminum, brass, and copper applications where traditional threaded fasteners may fail. The black corrosion-resistant steel construction provides durable protection against environmental factors, while the Tri-Lobe shank design displaces material during installation to create strong, permanent threads without chips or debris. The Torx Plus drive system enables higher torque application with reduced slippage, making these 8-32 UNC screws ideal for high-vibration environments and automated assembly processes. This combination of features ensures reliable performance in electrical enclosures, HVAC systems, and metal fabrication where thread integrity and corrosion resistance are critical.
Specification Summary & Compliance
Manufactured to precise dimensional standards with UNC coarse thread profile and Class 2A thread tolerance. The screw features a 7/8" length with 0.164" thread diameter and fully threaded design for maximum engagement. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in various industrial applications. Designed for use with No. 29 drill bit (0.136" diameter) for proper hole preparation in aluminum, brass, and copper materials.
