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The AU-VE-CO PRODUCTS 23916 is a standard flat washer designed for M10 screw applications, manufactured in copper for corrosion resistance and reliable load distribution. With a 12mm inside diameter, 16mm outside diameter, and 1.5mm thickness, this washer seats flush against fastener heads or mating surfaces to spread clamp load and protect the base material. It follows metric dimensioning standards and is well suited for plumbing, HVAC, electrical, and general mechanical assemblies where copper compatibility is required or preferred. Installation is straightforward for licensed tradespeople working on equipment requiring metric hardware.
This washer is used wherever M10 metric fasteners are employed and a copper seating surface is needed. Common applications include pipe flange connections, equipment mounting points, and electrical bonding assemblies where copper's conductivity and corrosion resistance offer an advantage. The metric sizing makes it appropriate for equipment manufactured to ISO or DIN standards. It is sold individually with a minimum order quantity of 50 pieces, making it suitable for stocking in a service van or shop inventory for routine maintenance and repair work.
Designed as a standard metric flat washer for use with M10 screws and bolts in residential and commercial trade applications requiring copper hardware.
Install this washer between the fastener head or nut and the mating surface before torquing the M10 fastener to the assembly specification. De-energize or depressurize any system before servicing fastened connections. Copper washers may deform under excessive torque, so follow the equipment manufacturer's fastener torque guidelines. Copper is a soft material and should not be reused in high-cycle or high-vibration joints where the washer may have taken a permanent set.
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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