S-90317A106 M2.5 x 6 mm ASME B18.13.1M Stainless Steel Pan Head Phillips Screws with Internal-Tooth Lock Washer

Key Features & Benefits at a Glance

• Superior vibration resistance with 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 extended service life
• Reliable installation performance with Phillips No. 1 drive that provides secure tool engagement and reduces cam-out risk
• Optimized thread engagement through Class 6g coarse thread design ensuring consistent clamping force in various materials
• Enhanced mechanical strength with 70,000 psi tensile strength and Rockwell B70 hardness for demanding applications
• Secure locking action from 410 stainless steel washer that bites into surfaces to prevent loosening under stress
• Industry-standard compatibility with fully threaded design meeting ASME B18.13.1M specifications for reliable performance

Professional Applications & Engineering Value

This M2.5 metric pan head screw with integrated internal-tooth lock washer addresses critical vibration-induced loosening challenges in industrial equipment and machinery. The 18-8 stainless steel construction combined with passivated finish provides exceptional corrosion resistance for harsh environments, while the coarse thread pitch (0.45mm) ensures rapid installation and reliable holding power in various substrates. The Phillips No. 1 drive offers familiar, efficient installation with reduced stripping risk. Particularly valuable in industrial fastening applications where constant motion or thermal cycling threatens joint integrity, this fastener's 410 stainless steel lock washer creates permanent resistance against rotational forces, making it ideal for electronics enclosures, machinery guards, and automotive components requiring vibration-resistant solutions.

Specification Summary & Compliance

Manufactured to precise metric dimensions with M2.5 thread size, 0.45mm pitch, and 6mm length featuring Class 6g thread fit tolerance. The fully threaded coarse spacing design conforms to ASME B18.13.1M manufacturing specifications. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across regulated industries. Both screw and washer components feature passivated finish for enhanced corrosion protection.