S-90184A425 Length 4" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh industrial environments and outdoor applications.
• Efficient thread forming design creates strong, permanent threads in sheet metal without chips, ensuring reliable, vibration-resistant fastening.
• Optimized for sheet metal up to 0.025" thick, using a standard No. 21 drill bit (0.159" diameter) for quick, precise installation.
• Maximum holding power from a fully threaded No. 10 x 4" body and 12 threads per inch, providing excellent grip in thin materials.
• Easy installation and removal with a Phillips No. 2 drive, reducing tool slippage and assembly time.
• Durable pan head design offers a low-profile, rounded finish that resists snagging and provides a neat appearance.
• Compliant with RoHS 3 and REACH regulations, ensuring environmental safety and meeting global industrial standards.

Professional Applications & Engineering Value

This 316 stainless steel tapping screw is engineered to solve common challenges in sheet metal fabrication, such as material fatigue and corrosion. Its thread forming (Type A/AB) technology displaces metal rather than cutting it, which strengthens the host material and prevents loosening under vibration—a critical advantage in automotive, HVAC, and electronics enclosures. The fully threaded design and pointed tip ensure smooth penetration and uniform stress distribution, reducing the risk of strip-out in thin gauges. With excellent resistance to chemicals and moisture, these Phillips pan head screws deliver long-term reliability in demanding applications, from marine components to food processing equipment.

Specification Summary & Compliance

This screw meets standard inch dimensions: No. 10 size with 0.19" thread diameter, 12 TPI, and 4" length under Class 2A thread tolerances. It conforms to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free of hazardous substances. The thread forming design follows industry standards for Type A/AB tapping screws, requiring a No. 21 drill bit (0.159" diameter) for optimal performance in materials up to 0.025" thickness.