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The AU-VE-CO PRODUCTS 23919 is a metric standard flat washer machined from copper, sized for M16 fastener applications. It measures 18mm inside diameter, 22mm outside diameter, and 1.5mm thick. Copper construction makes this washer suitable where corrosion resistance, electrical conductivity, or soft-metal compatibility is a priority. Plumbers, pipefitters, electricians, and mechanical contractors use flat washers like this one to distribute load, reduce surface damage under fastener heads, and provide a reliable seating surface on mating components. The metric dimensions follow standard ISO washer geometry for M16 screw sizes.
This washer is used in plumbing, electrical, HVAC, and general mechanical assemblies where M16 metric fasteners are specified. Copper is commonly chosen in applications involving moisture exposure, dissimilar-metal concerns, or where the washer must serve as a conductive interface. It is appropriate for both residential and light commercial service work where metric hardware is standard.
Designed as a standard metric flat washer for use with M16 screws and bolts in plumbing, electrical, HVAC, and mechanical assemblies requiring copper hardware.
Installation requires no special tooling beyond the fastener drive appropriate for the M16 bolt or screw being used. Power down electrical systems or shut off fluid supply before servicing any assembly that includes this washer. Copper is a soft metal and can deform under excessive torque, so follow the torque specifications provided by the equipment or fastener manufacturer. Dispose of used copper washers in accordance with local regulations if contaminated by process fluids.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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