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This section provides an overview for thumb screws as well as their applications and principles. Also, please take a look at the list of 9 thumb screw manufacturers and their company rankings. Here are the top-ranked thumb screw companies as of August, 2026: 1.UNICORP Electronic Hardware, 2.KD Fasteners, Inc., 3.Peerless Hardware.
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Categories Related to Thumb Screws
A thumb screw is a screw that is intended to be tightened or loosened by hand without using tools such as screwdrivers. Because thumb screws are tightened by hand, the head part is characterized by its large size and finger-friendly shape.
A thumb screw is ideal for locations where they are repeatedly taken on and off. Since they are tightened by hand each time, the screw-tightening force is not consistent. It is necessary to consider the type of person who will be installing and removing the screws, and whether there will be any impact if the screw is not tightened properly.
Thumb screws come in both male and female types. As mentioned above, they are used in various fields, including office equipment, household goods, furniture, industrial equipment, assembly, and processing jigs, due to their ease of use. At home, they are used as lids for replacing batteries in electrical appliances, for fixing cameras on tripods, and for smartphone stands. In industrial equipment, they are used to secure covers, guides, and other items that users remove when conveyance is jammed. They are also used for fixing parts in jigs at processing and assembly sites.
When a product is equipped with thumb screws, the user intuitively understands that it is a part that can be removed. It is characterized by the fact that it can be easily attached and detached and also has the effect of pointing to the part. Conversely, thumb screws are not used for a part that is not to be removed (or a part that should not be removed) because it is easy to assemble.
In most thumb screws, the threaded part is made of metal. The knob part can be made of either resin or metal, but in the case of resin, injection molding allows for a wider range of designs. Many of them are designed to be easier to grip. There are also simply circular thumb screws regardless of whether they are made of metal or resin. In such cases, they always have knurling around the periphery. This is to make it easier for fingers to catch on the knob.
When designing thumb screws, it is important to note the following: the thumb screws must be strong enough to handle the weight and vibration of the part, there must be enough space to turn it by hand, and there must be no problem if the thumb screws happen to fail.
*Including some distributors, etc.
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Unicorp Inc., established in 1971, based in Orange, New Jersey, is a manufacturer of precision electronic hardware components, fasteners and handles. The company’s product portfolio includes swage standoffs, male-female standoffs, male-male standoffs, captive panel hardware, and insulating washers. It received the nickname, “oddball king” for offering a wide variety of diameters, lengths, materials and finishes. The company is partnered with Rotor Clip to distribute retaining rings. It complies with the EPA, OSHA, REACH, NJDEP - RoHS & DFARS.
KD Fasteners, Inc. was founded in 1987 and headquartered in Addison, Illinois. The company is a fastener manufacturer and distributor, specializing in custom fasteners from such materials as steel, brass, silicon bronze, and other non-ferrous metals, supplying over 100,000 different fastener components. The company has 3 product segments: standard fasteners, standard metric fasteners, and custom fasteners. Custom fastener varieties include studs, washers, machine screws, flange bolts, and many other varieties. The company also offers many plating varieties including zinc, black oxide, waxing, and Magni 565 and 560.
Shenzhen Heat Hardware Co. Ltd, founded in the year 2003, and based in Shenzhen City, China, is a manufacturer and supplier of screws, bolts, and fasteners. Their product portfolio includes a diverse range of screws, bolts, and fasteners. The company offers one-stop customized solutions of screws, custom bolts, and fasteners for producing, designing, supplying, and exporting. The company is ISO-certified for environmentally friendly products. The products are used in various industries which include automotive, electronic, electric, communication, medical, and military projects.
DIC Fasteners, headquartered in Chennai, India, is a manufacturer, exporter, and supplier of standard and customized fasteners. The company offers a wide range of products, including bolts, nuts, screws, washers, and rivets, used in various industries such as automotive, construction, manufacturing, and engineering, where they play a crucial role in joining and securing components together. DIC Fasteners also offers customizations made to any size and material range, utilizing several types of materials, including aluminum, brass, bronze, stainless steel, and steel, ensuring a diverse range of options to suit various applications.
Boneham & Turner Ltd., founded in 1918 and based in Nottinghamshire, United Kingdom, is a manufacturer and supplier of engineering products and special engineering components. The company's product portfolio includes drill bushes, location pins, dowel pins, clevis pins, and thumb screws, among others. The engineering products and components find applications across industries such as aerospace, automotive, power generation, machine building and other sectors. The company holds ISO EN 9100: 2018 (AS9100 rev D and ISO 9001:2015) certification and boasts supplier relationships across the globe that enable it to offer a diverse range of engineering solutions to its global client base.
Peerless Hardware founded in 1908 in Connecticut, USA is a manufacturer of industrial hardware such as latches, hinges, handles, locks, and other components used in various industries such as transportation, construction, and agriculture. The company's main focus is on producing custom metal components for OEM production, although they also have a diverse product line that they manufacture and keep in inventory for sale. The company's products are designed to withstand harsh environments and heavy use, making them ideal for demanding applications.
PANOZZO founded in Merate Lecco, Italy, in 2000, is a manufacturer and distributor of plastic packaging protection and end products. It manufactures products including parallel protection plugs, connectors, ferrules, and threaded plastic caps. Its plastic screws are non-conductive and lightweight, so they are used to eliminate electrical interference. The company also molds custom products according to the requirements of clients. It has 50 employees. Its spiral guards provide hose protection and cable protection in rough conditions.
Ranking as of August 2026
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | UNICORP Electronic Hardware |
28.1%
|
| 2 | KD Fasteners, Inc. |
21.9%
|
| 3 | Peerless Hardware |
15.6%
|
| 4 | Morton Machine Works |
9.4%
|
| 5 | Panozzo s.r.l. |
6.3%
|
| 6 | Boneham & Turner Ltd |
6.3%
|
| 7 | DIC Fasteners |
6.3%
|
| 8 | ALTINKAYA |
3.1%
|
| 9 | Shenzhen Heat Hardware Co., Ltd |
3.1%
|
Derivation Method
The ranking is calculated based on the click share within the thumb screw page as of August 2026. 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
|
2 | 40.0% |
|
China
|
1 | 20.0% |
|
India
|
1 | 20.0% |
|
United Kingdom
|
1 | 20.0% |
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Grip for THA-433 *This grip is for releasing the latch from the back.
