S-90317A121 M3 x 12 mm ISO 7045 Stainless Steel Pan Head Phillips Screws with Internal-Tooth Lock Washer

Key Features & Benefits at a Glance

• Superior vibration resistance with an integrated internal-tooth lock washer that maintains secure fastening in high-motion environments
• Excellent corrosion resistance thanks to 18-8 stainless steel construction and passivated finish for long-term reliability in harsh conditions
• High mechanical strength with 70,000 psi tensile strength and Rockwell B70 hardness to withstand heavy loads and stress
• Reliable thread engagement with Class 6g thread fit and coarse pitch ensuring quick assembly and secure connections
• Optimized drive performance featuring a Phillips No. 1 drive for efficient installation with standard tools
• Enhanced load distribution through the pan head design that reduces surface pressure and prevents material damage
• Full thread coverage along the 12mm length providing maximum grip strength across the entire fastener

Professional Applications & Engineering Value

These M3 metric screws with internal-tooth lock washers deliver critical vibration resistance in demanding industrial applications where loosening under dynamic loads is a primary concern. The combination of 18-8 stainless steel material and passivated finish provides exceptional corrosion protection for machinery exposed to moisture, chemicals, or outdoor elements. The fully threaded design with Class 6g thread fit ensures consistent engagement in tapped holes, while the coarse pitch threading enables rapid assembly in production environments. These rounded head Phillips screws are engineered to maintain integrity in automotive assemblies, electronic enclosures, and industrial equipment where vibration-resistant fastening and long-term reliability are essential for operational safety and reduced maintenance intervals.

Specification Summary & Compliance

This M3 x 0.5mm pitch x 12mm length screw features Class 6g thread tolerance with coarse thread spacing and fully threaded design. Manufacturing complies with ISO 7045 standards for dimensional accuracy and performance. The product meets RoHS 3 (2015/863/EU) compliance for hazardous substance restrictions and REACH (EC 1907/2006) regulations for chemical safety. Both the screw and 410 stainless steel lock washer feature passivated finish for enhanced corrosion protection.