S-95844A621 Length 16 mm DIN 7982 Type C Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and long-term reliability.
• Efficient thread-forming design creates strong, permanent threads in sheet metal without pre-tapping, reducing installation time and tooling.
• Flush, secure seating thanks to the standard 80° flat head and 7.5mm diameter, providing a smooth finish and preventing snagging.
• High-torque driving capability with the Phillips No. 2 drive, ensuring secure engagement and reducing cam-out during installation.
• Maximum material penetration from the fully threaded, pointed tip design, enhancing grip and pull-out strength in sheet metal up to 0.025".
• Guaranteed dimensional consistency and performance through compliance with DIN 7982 Type C specifications.
• Versatile right-hand threading for standard assembly processes, ensuring compatibility with common industrial equipment.

Professional Applications & Engineering Value

These M3.9 x 16mm metric tapping screws are precision-engineered for demanding sheet metal applications, where vibration resistance and durability are critical. The 18-8 stainless steel material offers excellent resistance to oxidation and corrosion, making these flat head fasteners suitable for outdoor, marine, or chemically exposed environments. The thread-forming (Type C) design displaces material to create robust, strip-resistant threads, eliminating the need for separate tapping operations and reducing assembly costs. With a standard 80° countersink angle and Phillips drive, these screws ensure a flush fit and reliable drive performance, minimizing workpiece damage and improving aesthetic finishes in enclosures, HVAC systems, and electronic chassis.

Specification Summary & Compliance

This fully threaded screw features an M3.9 size, 16mm length, 7.5mm head diameter, and standard metric tolerances. It conforms to DIN 7982 Type C for thread-forming tapping screws, ensuring precise thread geometry and performance in sheet metal. The screw is manufactured from 18-8 stainless steel and is compliant with RoHS and REACH environmental regulations, supporting safe and sustainable industrial use.