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The AU-VE-CO PRODUCTS 23917 is a metric standard flat washer made from copper, sized for M10 screws. It features a 12mm inside diameter, an 18mm outside diameter, and a 1.5mm thickness. Copper construction provides natural corrosion resistance and electrical conductivity, making this washer well suited for plumbing, HVAC, and electrical applications where galvanic compatibility or sealing properties matter. Plumbers, HVAC technicians, and electricians commonly use copper flat washers as load-distributing hardware in threaded fastener assemblies on copper pipe fittings, bus bars, and equipment mounting points.
This washer is intended for use with M10 metric fasteners in trade applications where copper is the preferred or required material. Common install scenarios include securing copper pipe clamps, grounding connections, and equipment flanges in residential and light commercial mechanical systems. The metric dimensions conform to standard M10 hardware specifications, making this washer compatible with the broad range of metric fastener assemblies found in imported equipment and modern HVAC and plumbing systems.
Designed as a standard flat washer for use with M10 metric fasteners in copper-compatible mechanical, plumbing, and electrical assemblies.
Install using standard hand tools appropriate for the fastener assembly. Ensure mating surfaces are clean and free of debris before seating the washer. Power down or de-energize any electrical circuit before servicing connections where this washer is used. Follow applicable NEC, IPC, or IFGC guidelines for the specific trade application.
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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