280 Pcs Assorted Copper Washer Gasket Set Flat Ring Seal Assortment Kit M5-M20 & 360 Pcs Stainless Steel Flat Washers Sealing Ring Washers Assortment Set 8 Sizes
- 640 Pcs washers: 360 Pcs stainless steel washers and 280 Pcs copper washers
- The washer is a thin disk-shaped plate with a hole in the middle that is normally used to distribute the load of a threaded fastener, such as a screw or nut.Other uses are as a spacer, wear pad, pre-load indicating device, locking device, and to reduce vibration.
- High-quality bolted joints require hardened steel washers to prevent the loss of pre-load after the torque is applied.Washers are also important for preventing galvanic corrosion, particularly by insulating steel screws from aluminum surfaces.
- This set of flat washers are made of copper of good electrical conductivity and thermal conductivity.Flat washers can spread a load, and prevent damage to the surface being fixed, and insulate steel screws from surface
