Is in there such a thing as a kind of washer (hardware) that one of the sides opens?

Since I am not exactly sure what you are asking here are a couple of ideas





There is a split lock washer, which has a slit in it, is like a small spring and is used to keep a nut or bolt tight when there is some vibration.





There is also an item which is actually a snap ring called an E ring which, when installed in a slot in a shaft will keep the shaft in place.





The third thing I can think of is shims used to level equipment. These usually have a slot so the bolt holding the equipment in place does not have to be removed to add a shim.





Hope some of this is helpfulIs in there such a thing as a kind of washer (hardware) that one of the sides opens?
I am guessing you want to add a washer without removing the nut. There are (or you could make by hack sawing) washers in the shape of a ';C'; so they can be slid over the bolt.Is in there such a thing as a kind of washer (hardware) that one of the sides opens?
a split lock washer

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