S-94997A450 Length 25 mm DIN 7981 Tapping Screws

Key Features & Benefits at a Glance

• Corrosion-resistant 18-8 stainless steel construction ensures long-term reliability in harsh industrial environments
• Thread forming technology creates stronger, vibration-resistant threads without generating chips
• Maximum 0.025" drilling thickness capability provides excellent performance in sheet metal applications
• Phillips drive with No. 2 size offers secure tool engagement and efficient installation
• Coarse thread pattern enables faster installation and superior holding power in various materials
• Fully threaded design maximizes grip length and distributes load evenly across the entire fastener
• DIN 7981 compliance guarantees precise dimensional accuracy and consistent performance standards

Professional Applications & Engineering Value

These M3.9 metric tapping screws are engineered specifically for demanding sheet metal applications where reliability and corrosion resistance are critical. The 18-8 stainless steel composition provides excellent resistance to oxidation and chemical exposure, making these fasteners ideal for outdoor equipment, electrical enclosures, and HVAC systems. The thread forming design eliminates the need for pre-tapped holes while creating stronger, more durable connections that resist loosening under vibration. With their coarse thread pattern and pointed tip, these screws drive effortlessly through various metal thicknesses up to 0.025", reducing installation time and labor costs while ensuring secure, long-lasting fastening solutions for industrial assembly lines and maintenance operations.

Specification Summary & Compliance

This M3.9 x 25mm tapping screw features precise metric dimensions with fully threaded coarse pitch configuration and standard pan head profile. Manufactured to exact DIN 7981 specifications for dimensional accuracy and performance reliability. The product is fully RoHS 3 (2015/863/EU) compliant and meets international environmental regulations, ensuring safe use across various industrial sectors. The right-hand thread direction and No. 2 Phillips drive provide standardized installation compatibility with common industrial tools.