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This section provides an overview for captive washers as well as their applications and principles. Also, please take a look at the list of 3 captive washer manufacturers and their company rankings. Here are the top-ranked captive washer companies as of December, 2024: 1.Songlin Technology Co., LTD, 2.NBK America LLC.
Table of Contents
A captive washer is a metal plate-like component inserted between a screw and a nut to prevent the screw from loosening.
Its effectiveness lies in its ability to increase the surface area in contact with the part being fastened, thereby increasing friction and reducing the likelihood of the fastener loosening over time. This is particularly important in applications subject to frequent vibrations or impacts, such as in machinery, automotive assemblies, construction projects, and other dynamic environments.
Featuring a pre-drilled hole to accommodate the screw, captive washers simplify assembly processes by ensuring the washer remains with the screw or nut, eliminating the risk of loss or incorrect assembly. Noteworthy for their diversity, affordability, and ease of installation, captive washers enhance the reliability of fastened joints across a wide range of screw types and application scenarios.
*Including some distributors, etc.
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NBK America LLC, founded in 2015 and based in King of Prussia, Pennsylvania, is an American manufacturer and a subsidiary of Japan's Nabeya Bi-tech Kaisha, specializing in mechanical components. Their product range includes couplings, like miniature shaft couplings for precision machine tools and semiconductor manufacturing equipment, special screws, such as vacuum application screws and other machine components. NBK offers finite automaton (FA) solutions, including wireless positioning units for production lines and setup operations. NBK provides machine component servicing, such as vibration resistance treatment and laser engraving. Services for couplings and special screws include coupling stainless steel screw alteration and screw length adjustment.
MW Industries, started in 1861 and based in North Carolina, US, is a manufacturer of a wide array of precision components and products. The company produces threaded insert screws, nuts plain, and stock extension springs. Its products are used in automotive, construction, and machinery fields across the USA, Switzerland, and China. The company holds ISO 9001, ISO 13485, and IATF 16949:2016 certifications. Its products comply with the ITAR, REACH, and RoHS standards.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Songlin Technology Co., LTD |
50.0%
|
| 2 | NBK America LLC |
50.0%
|
Derivation Method
The ranking is calculated based on the click share within the captive washer page as of December 2024. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
United States of America
|
1 | 100.0% |
