280pcs M5-M20 Flat Copper Washers 12 Sizes Flat Washer with Storage Box for Sealing Screws Sealing Rings

• 12 different sizes: 12 different sizes of flat copper gaskets in this set that you can use for different purposes
• WIDE APPLICATION: These copper seals used mainly to distribute the load on threaded fasteners, also used as seals, spacers, wear pads, preload indication devices, locking devices and reducing vibration.
• HIGH QUALITY MATERIAL: These flat washers are made of high quality copper with good electrical and thermal conductivity.
• Used for a long time: This set includes many copper drain seals that can be used for a long time. So you don't have to go to a hardware store looking for washers for quite a while.
• Tidy up: 280 copper washers are packed in a square divided and transparent plastic box, they are neatly stored in each compartment.

Specifications: Material: Copper Type: Flat washer Box Size: 17.5 x 10 x 2.3cm / 6.89 x 3.93 x 0.9" ID*OD*Thickness & Quantity: M5*9*1mm 30pcs M6*10*1mm 30pcs M6*12*1mm 20pcs M8*12*1mm 30pcs M10*14*1mm 30pcs M8*14*1mm 20pcs M12*16*1mm 25pcs M14*18*1mm 25pcs M12*18*1.5mm 20pcs M16*20*1.5mm 20pcs M16*22*1.5mm 15pcs M20*26*1.5mm 15pcs Package Includes: 1 set x Washers