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A washer with a "wave" in the axial direction, which provides spring pressure when compressed. Wave washers, of comparable size, do not produce as much force as Belleville washers. In Germany, they are sometimes used as lock washers but they are less effective than other choices. [a] [8] Split washer or spring lock washer
In applications where vibration or rotation may work a nut loose, various locking mechanisms may be employed: lock washers, jam nuts, eccentric double nuts, [1] specialist adhesive thread-locking fluid such as Loctite, safety pins or lockwire in conjunction with castellated nuts, nylon inserts , or slightly oval-shaped threads.
A coiled spring pin, also known as a spiral pin, is a self retaining engineered fastener manufactured by roll forming metal strip into a spiral cross section of 2 + 1 ⁄ 4 coils. Coiled spring pins have a body diameter larger than the recommended hole diameter and chamfers on both ends to facilitate starting the pin into the hole.
Toothed lock washers: Withdrawn: DIN 6798: Serrated lock washers: Withdrawn: DIN 6799: Lock washers (retaining washers) for shafts: Active: DIN 6880: Bright Key Steel; Dimensions, Permissible Variations, Weights: Active: DIN 6885-1: Drive Type Fastenings without Taper Action – Part 1: Parallel Keys, Keyways, Deep Pattern: Active: DIN 6885-2
A Keps nut, (also called a k-lock nut [1] or washer nut), is a nut with an attached, free-spinning washer. It is used to make assembly more convenient. Common washer types are star-type lock washers, conical, and flat washers.
These same 8 washers can be arranged in a 3-3-2 configuration (=), a 4-4 configuration (=), a 2-2-2-2 configuration (=), and various other configurations. The number of unique ways to stack n {\displaystyle {n}} washers is defined by the integer partition function p ( n ) and increases rapidly with large n {\displaystyle {n}} , allowing fine ...
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[1] The jam nut essentially acts as the "other object", as the two nuts are tightened against each other. They can also be used to secure an item on a fastener without applying force to that object. This is achieved by first tightening one of the nuts onto the item. Then the other nut is screwed down on top of the first nut.
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