S-92470A363 Length 16 mm DIN 7981 Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and long-term reliability.
• Efficient thread forming design creates strong, permanent threads in sheet metal without pre-drilling, reducing assembly time and labor costs.
• Maximum material penetration thanks to the fully threaded shank and pointed tip, ensuring secure fastening in materials up to 0.025" thick.
• Widely compatible Phillips drive (No. 2) allows for quick installation with common tools, minimizing the need for specialized equipment.
• Durable pan head profile provides a low-profile, rounded finish that resists snagging and offers a clean aesthetic.
• Reliable performance in sheet metal applications due to coarse threading and Type C design, which prevents loosening under vibration.
• Standardized quality assurance through compliance with DIN 7981, ensuring consistent dimensions and mechanical properties.

Professional Applications & Engineering Value

These M3.9 coarse thread tapping screws are engineered to address common challenges in sheet metal assembly, such as material fatigue and corrosion. The 18-8 stainless steel offers excellent resistance to rust and chemicals, extending service life in demanding conditions like outdoor enclosures or HVAC systems. The thread forming (Type C) design displaces material rather than cutting it, resulting in higher thread strength and reduced risk of strip-out. Combined with a Phillips drive and fully threaded shank, these screws provide rapid, vibration-resistant fastening for panels, brackets, and chassis—streamlining production while maintaining structural integrity.

Specification Summary & Compliance

This M3.9 x 16mm tapping screw features a coarse thread with right-hand direction and is fully threaded for consistent grip. It meets DIN 7981 specifications for dimensional accuracy, including head diameter (7.5 mm) and head height (2.8 mm). The screw is manufactured from 18-8 stainless steel and is compliant with RoHS and REACH environmental standards, ensuring safe use in various industrial applications.