Black Round Lock Washer

A washer is a thin plate (typically disk-shaped) with a hole (typically in the middle) that is normally used to distribute the load of a threaded fastener, such as a bolt or nut. Other uses are as a spacer, spring (Belleville washer, wave washer), wear pad, preload indicating device, locking device, and to reduce vibration (rubber washer). Washers often have an outer diameter (OD) about twice their inner diameter (ID), but this can vary quite widely.

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Product Details

Overall Description 

Name Black Round Lock Washer
Size OEM size

Carbon steel, aluminum, and so on

Finished Black zinc plating, and so on
Quality Tolerence required
Business type OEM manufacturer
Lead time Within 40days
Application Electric toys, various type, etc

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Black Round Lock Washer Application

black round lock washer metal washer


Why Choose Us?

metal washer lock spring washer manufacturer



Washers are divided into: flat washers - Class C, large washers - Class A and Class C, extra large washers - Class C, small washers - Class A, flat washers - Class A, flat washers - chamfered - Class A, high steel structure Strength washers, spherical washers, tapered washers, square slant washers for I-beams, square slant washers for channel steel, standard spring washers, light spring washers, heavy duty spring washers, internal tooth lock washers, internal serrated lock washers, External tooth lock washer, external serrated lock washer, single ear stop washer, binaural stop washer, outer tongue stop washer, retaining washer for round nut.


Flat washers are generally used in the joints. One is soft and the other is hard and brittle. Its main function is to increase the contact area, disperse the pressure, and prevent the soft texture from being crushed. The basic function of the spring washer spring is to force the nut after the nut is tightened, and increase the friction between the nut and the bolt! The material is 65Mn (spring steel), heat treatment hardness is HRC44 ~ 51HRC, and is surface oxidized.


Lock washer

Lock washers A washer that prevents loose bolts. The working principle of the lock washer is very simple. It consists of two washers. The outer side has a radial ridge surface and the inner side is a slanted tooth surface. When assembled, the inner oblique tooth faces are opposite each other, and the outer radial ridge surface is in a meshing state with the contact faces at both ends. When the connecting member is subjected to vibration and the bolt is loosened, only the inner side of the two washers is allowed to be opposed to each other. Displacement, resulting in lifting tension, thus achieving 100% locking.


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