S-90087A102 2-56 x 1/4" ASME B18.6.3, SAE J933 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
- Self-tapping design eliminates the need for pre-tapped holes, saving time and labor costs in assembly operations.
- Zinc-plated steel construction provides excellent corrosion resistance, ensuring long-term durability in various industrial environments.
- Coarse UNC threads and Type F thread cutting profile deliver superior holding power and reliable fastening in materials like aluminum, brass, and cast iron.
- Phillips No. 1 drive allows for efficient installation with common tools, reducing the risk of cam-out and improving operator control.
- Fully threaded blunt tip design ensures maximum thread engagement and consistent clamping force along the entire fastener length.
- Compliance with ASME B18.6.3 standards guarantees dimensional accuracy, interchangeability, and performance reliability for professional applications.
- RoHS 3 compliance ensures the screws meet environmental regulations, making them suitable for use in regulated industries and global supply chains.
Professional Applications & Engineering Value
These 2-56 UNC thread cutting screws are engineered to address common challenges in fastening non-ferrous metals and sheet metal. The zinc-plated steel material offers a robust balance of strength and corrosion resistance, while the Type F thread cutting design with coarse UNC threads efficiently forms mating threads in ductile materials like aluminum, brass, and cast iron, preventing stripping and ensuring vibration-resistant connections. The pan head with Phillips No. 1 drive provides a low-profile, secure fit that is ideal for applications where space is limited and reliable torque transmission is critical. This combination makes them a trusted solution for industrial assembly, HVAC systems, and electronic enclosures, reducing installation time and enhancing joint integrity.
Specification Summary & Compliance
These screws feature a 2-56 UNC coarse thread with standard Class 2A dimensional tolerances, ensuring precise fit and interchangeability. The thread cutting Type F design is optimized for use with a No. 49 drill bit (0.073" diameter) in specified materials. Manufactured in compliance with ASME B18.6.3 specifications and RoHS 3 (2015/863/EU) regulations, they meet rigorous industry standards for performance, safety, and environmental responsibility.
