S-90317A105 M2.5 x 8 mm JIS B 1188-D 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 washers that maintain secure fastening in high-stress environments
• Excellent corrosion protection from 18-8 stainless steel construction and passivated finish for long-term reliability in harsh conditions
• Maximum holding power through fully threaded design ensuring consistent engagement and load distribution
• Precision thread fit with Class 6g tolerance and coarse threading for quick installation and reliable performance
• Enhanced durability with 70,000 psi tensile strength and Rockwell B70 hardness to withstand heavy-duty applications
• Secure drive engagement via Phillips No. 1 drive style providing efficient torque transfer during installation
• Regulatory compliance assurance meeting JIS B 1188-D standards and environmental regulations for global acceptance

Professional Applications & Engineering Value

This M2.5 pan head screw with internal-tooth lock washer delivers critical engineering solutions for applications where vibration-induced loosening compromises assembly integrity. The 18-8 stainless steel construction combined with passivated finish provides exceptional corrosion resistance in demanding environments including marine, automotive, and industrial equipment. The fully threaded metric design with coarse 0.45 mm pitch ensures rapid installation and maximum thread engagement, while the internal-tooth lock washer creates permanent resistance against rotational forces. These precision screws are engineered to maintain clamping force in high-vibration machinery, electronic enclosures, and precision instruments where reliability is non-negotiable.

Specification Summary & Compliance

Manufactured to exacting JIS B 1188-D specifications with Class 6g thread fit tolerance for precision mating. The metric M2.5x0.45 coarse thread configuration ensures compatibility with standard components. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations guarantees safe use across global markets. The complete assembly features matching 18-8 stainless steel materials and passivated finish throughout both screw and washer components for consistent performance and corrosion protection.