Washers Types

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Types of Washers

Following are common types of washers:

1. Backup Rivet Washer

2. Belleville Conical Washer

3. Dock Washer

4. Fender Washer

5. Finishing Cup Washer

6. Flat Washer

7. Lock Washer - Split Ring

8. Lock Washer - High Collar

9. Lock Washer - External Tooth

10. Lock Washer - Internal Tooth

11. Structural Washer

12. Square Washer



1. Backup Rivet Washer:


Rivet backup washers are used to create a bigger install diameter giving the rivet a far better hold and more support. Backup washers can help to stop pull-through of a rivet.


2. Belleville Conical Washer:


Belleville conical washers are a kind of washer that adds extra tension to a fastener assembly. They are commonly utilized in stacks to extend the load, deflection or both to an assembly counting on the stack. These washers are often considered lock washers because they add tension and absorb vibration to an assembly.


3. Dock Washers:




Dock washers are heavy duty washers, often used to build docks. Also utilized in heavy duty construction where a thick washer is required, dock washers are almost like fender washers with a little inside diameter hole.


4. Fender Washer:


Fender washers are round washers with alittle inside diameter hole. Fender washers are used to prevent pull-through and provide a greater bearing surface under the fastener.




5. Finishing Cup Washer:




Finishing cup washers form a cup for the top of the screw or fastener to suit in, creating a finish flush with the highest of the top. Used for finishing, cup washers are shaped sort of a cup.



6. Flat Washers:





Flat washers are round outer diameter thin plates with a middle hole punched to the dimensions of the bolt or screw. Flat washers are wont to distribute a lot of threaded bolts, screws and nuts evenly because the fastener is tightened.



7. Lock Washer - Split Ring:


Split ring lock washers are wont to prevent nuts, bolts and screws from vibrating loose. These washers are rings which are split at one point and bent into a helical shape.


8. Lock Washer - High Collar:


High collar lock washers are designed to suit under the top of a socket screw. Split ring lock washers are wont to prevent nuts, bolts and screws from vibrating loose. These washers are rings which are split at one point and bent into a helical shape.


9. Lock Washers - External Tooth:



External tooth lock washers are used for locking and tension. Round washers with teeth on the surface, used for max holding power. Must be used with fasteners with adequate head diameter.


10. Lock Washer - Internal Tooth:



Internal tooth lock washers are used for locking and tension. A round washer with internal teeth, designed to prevent a nut or screw head from loosening with the strut action created by the teeth.


11. Structural Washers:


Structural washers are thick and powerful, built for heavy duty applications like construction. These washers can be found in steel beams and girder fastener assemblies.

12. Square Washers:


Square washers are square in shape and may be flat on both sides or flat on one side and beveled on one side. Often used with square head bolts, square washers prevent pull through and supply a bigger area and greater hold than standard round flat washers.





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