Also commonly referred to as flat disks, the flat washe […]
Also commonly referred to as flat disks, the flat washers are normally used as buffers between metal parts or also as spacers to offer friction reduction and cushioning and also to ensure that loads are evenly distributed. You will find the washers being used in reducing the vibration and movement that is normal between two moving parts that are heavy. They are used to help smooth flat surface for a part fit tightly to the other or move smoothly over the other part.
The flat washers have been used extensively as bridges for gaps especially in cases where you find that a hole is much bigger that the screws or bolts that need to be fitted into it. They are more and more essential in different applications. They come in different materials and the selection one makes will depend on the application and the washer needs that he has for the application. You will find them in leather, wood, fabric and metals such as iron, copper, steel and bronze among many other options. There are also plastic, paper and rubber flat washers. The huge variety makes it possible to find a washer suitable for any kind of application.
Flat washers can avoid corrosion especially between the two metals they have been used for. Most of the metal washer will go through pre heating to make them resistant to high temperatures. Other materials you will find include fiberglass, plastics reinforced with cotton and glass filled nylons. Nylon and plastic flat washers are the most popular especially with electronics industries and electrical industries. This is because in the settings, the hard wearing quality that they have comes in handy.
There are two different types of flat washers to choose from.
Fender washers are generally used for light- to medium-duty applications. This may include auto body repair, plumbing repair or electrical work. Fender washers are often used in sheet-metal fabrication. They can also be used to hang drywall or install wood paneling. Fender washers always bigger than standard washers.
Nylon flat washers may be used instead of metal washers in certain applications. Nylon washers are lightweight and are better insulators than metal washers. They are not as strong but are more resistant to certain chemicals. Standard sizes for nylon flat washers are 1/4 inch, 3/8 inch, 1/2 inch, 5/8 inch and 3/4 inch.
You still need to know when to use a flat washer exactly even though the process of using it is quite easy.
Select a flat washer that just fits over the thread of a bolt and place it on the bolt.
Insert the bolt in a hole drilled through the material to be fastened. The hole can be a through-hole, or one threaded to receive the bolt.
Tighten the bolt in the hole if the hole is threaded. In the event of a through-hole, place a second flat washer on the end of the bolt and then a lock washer if needed and finally the proper-sized nut to fit the bolt.
Tighten the bolt and nut with wrenches.
Use one flat washer when the receiving hole is threaded and two when bolting two or more pieces together or if the material being secured is soft or slotted. Flat washers can avoid nut and bolt digging in the the soft material. click http://www.din975.net/ to see more information.