S-99435A600 6 mm ID x 13 mm OD Finishing Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance from nickel-plated brass construction for extended service life in harsh environments
• Perfect flush surface finishing with 90° countersink angle ensuring seamless integration with countersunk screw heads
• Precision dimensional accuracy with 6mm ID and 13mm OD providing reliable fit and consistent performance
• Excellent electrical conductivity inherent to brass material ideal for electrical and electronic applications
• Environmental compliance assurance with RoHS 3 certification for safe use in regulated industries
• Optimized load distribution through precise 2.3mm height design preventing surface damage and material stress
• Metric system compatibility ensuring seamless integration with M4 fasteners in international projects

Professional Applications & Engineering Value

These nickel-plated brass countersunk washers deliver exceptional engineering value in precision applications where corrosion resistance and electrical conductivity are critical. The 90° countersink angle ensures perfect alignment with standard countersunk screw heads, eliminating protrusions and creating smooth surfaces essential for aerospace components, electronic enclosures, and marine equipment. The M4 metric sizing provides reliable compatibility with international fastener systems, while the brass core with nickel plating offers superior protection against galvanic corrosion when mating with dissimilar metals. This combination addresses common industrial challenges including electrical grounding requirements, environmental degradation, and the need for precision flush mounting in confined spaces.

Specification Summary & Compliance

Manufactured to exacting dimensional standards with 6mm internal diameter, 13mm outer diameter, and 2.3mm overall height specifically engineered for M4 screw applications. Features a precision 90° countersink angle compatible with standard countersunk fasteners. The nickel-plated brass construction ensures consistent performance while maintaining RoHS 3 (2015/863/EU) compliance for environmental safety and regulatory adherence in global markets. Designed for metric system applications with precise tolerances suitable for industrial and commercial installations.