S-90048A255 Length 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
- Superior corrosion resistance with zinc-plated steel construction, ensuring long-term durability in harsh industrial environments.
- Efficient thread forming design creates strong, permanent threads in sheet metal without pre-tapping, reducing installation time and tooling costs.
- Optimized 82° countersink angle allows the flat head to sit flush with surfaces, providing a smooth finish and preventing snagging.
- Full threading along the 2-1/2" length maximizes grip and load distribution across the entire fastened joint.
- Reliable Phillips No. 2 drive offers secure tool engagement and reduces cam-out during high-torque applications.
- Compliance with RoHS 3 and REACH regulations ensures environmental safety and meets global manufacturing standards.
- Precision-matched to No. 21 drill bit (0.159" diameter) for accurate pilot holes, minimizing material stress and ensuring consistent performance.
Professional Applications & Engineering Value
These No. 10-12 thread forming tapping screws are engineered specifically for sheet metal applications, where vibration resistance and joint integrity are critical. The zinc-plated steel material provides excellent corrosion protection, extending service life in outdoor or humid conditions. The A/AB type thread forming design displaces material rather than cutting it, resulting in tighter, stronger threads that resist loosening under dynamic loads. With a fully threaded shank and standard flat head profile, these screws ensure uniform clamping force and a flush finish, ideal for HVAC systems, electronic enclosures, and automotive assemblies where reliability and aesthetics matter.
Specification Summary & Compliance
This screw features a No. 10-12 thread with right-hand direction and complies with standard inch measurements. It is designed for use with a No. 21 drill bit (0.159" diameter) and supports a maximum drilling thickness of 0.025". The product meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances and suitable for regulated industrial markets.
