S-90033A338 Length 3" 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
- Superior corrosion resistance with black-oxide steel coating, extending service life in demanding industrial environments.
- Efficient thread-forming design creates strong, permanent threads in sheet metal without pre-tapping, reducing installation time and tooling.
- Precise 82° flat head profile ensures a flush, professional finish that minimizes snagging and improves safety.
- Optimized for No. 21 drill bit (0.159") and up to 0.025" material thickness, providing reliable performance in standard sheet metal applications.
- Secure Phillips No. 2 drive offers excellent torque transfer and reduces cam-out during installation.
- Partially threaded shank allows for better clamping force and material pull-together in assembled components.
- Full compliance with RoHS 3 and REACH ensures environmental safety and global regulatory acceptance for your projects.
Professional Applications & Engineering Value
These black-oxide steel tapping screws are engineered specifically for sheet metal applications, where their thread-forming (A/AB type) design eliminates the need for separate tapping operations. The right-hand partially threaded configuration ensures strong pull-up and vibration resistance in assemblies like HVAC ductwork, electrical enclosures, and machinery panels. The corrosion-resistant black-oxide finish protects against rust in humid or industrial atmospheres, while the standard 82° countersink and flat head provide a smooth, flush surface that meets aesthetic and functional requirements. This combination delivers reduced assembly costs, higher joint integrity, and long-term reliability for industrial fastening solutions.
Specification Summary & Compliance
This No. 10-12 TPI screw features a 0.19" thread diameter, 3" length, and is designed for use with a No. 21 drill bit (0.159" diameter). It conforms to standard thread-forming (A/AB) tapping screw specifications with a maximum drilling thickness of 0.025". The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting stringent environmental and safety regulations for industrial use.
