S-95481A191 5.2 mm ID x 18 mm OD Finishing Washers
Finishing Washers
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Basic Information
Dimension Parameters
Material & Strength Parameters
Temperature & Environment Parameters
Installation & Application Parameters
Finish & Compliance Parameters
Geometric Parameters
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Key Features & Benefits at a Glance
- Excellent corrosion resistance due to non-metallic nylon construction, eliminating rust in humid or chemical environments
- Superior electrical insulation properties for safe use in electrical assemblies and electronic enclosures
- Durable R120 Rockwell hardness provides reliable load distribution and resistance to deformation under pressure
- Wide temperature tolerance from -40°F to 180°F ensures stable performance in both freezing and elevated heat conditions
- Smooth rounded face design prevents damage to connected surfaces and allows for easier, flush installation
- Precision 90° countersink angle ensures a perfect, secure fit with standard M5 countersunk screw heads
- Full RoHS 3 & REACH compliance guarantees environmental safety and meets strict international regulatory standards
Professional Applications & Engineering Value
These M5 metric nylon countersunk washers are engineered to solve common industrial challenges where metal fasteners fail. The nylon plastic material inherently resists corrosion, galvanic reactions, and electrical conductivity, making them ideal for electrical enclosures, marine equipment, and food processing machinery. The rounded face and precise 90° countersink angle work together to eliminate surface marring and ensure a flush finish, critical in visible assemblies or sensitive materials. With a temperature range of -40°F to 180°F, they maintain integrity in both outdoor and thermally dynamic environments, providing long-term reliability without the maintenance needs of metal alternatives.
Specification Summary & Compliance
This washer features a 5.2 mm ID and 18 mm OD with an overall height of 3.8 mm, designed for M5 screw size and manufactured to standard metric dimensions. The 90° countersink angle conforms to typical countersunk fastener requirements. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to environmental and health safety standards for industrial and consumer applications.
