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This section provides an overview for hexagon head cap screws as well as their applications and principles. Also, please take a look at the list of 8 hexagon head cap screw manufacturers and their company rankings. Here are the top-ranked hexagon head cap screw companies as of March, 2026: 1.Anchor Bolt & Supply Co., 2.Quality Socket Screw Mfg. Corp., 3.Strainsert Co..
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Hexagon head cap screws, also known as cap screws or socket screws, are fasteners with a hexagonal hole in the head, allowing for tightening with a hex key or Allen wrench. Unlike bolts that are typically used with nuts, these screws are designed to be used by themselves, securing components directly into threaded holes.
The design of hexagon head cap screws allows for ease of tightening in tight spaces where traditional wrenches might not fit, providing a space-saving solution for attaching small devices or components.
These screws are widely used in applications that require compact fastening solutions, including the assembly of TV stands, gaming chairs, and various other small devices. Offering high tightening force with minimal effort and eliminating the need for nuts, hexagon head cap screws are user-friendly, even for those with limited DIY experience.
The operating principle of hexagon head cap screws is straightforward: turning a hexagonal wrench tightens the screw. This mechanism allows force to be applied evenly across all six sides of the hexagon, facilitating easier tightening compared to screws that apply force to just two sides.
Commonly made from steel or stainless steel, hexagon head cap screws offer varying degrees of strength and rust resistance. Steel screws are strong and cost-effective but require surface treatments like black oxide coating to prevent rust. Stainless steel screws, while more expensive, offer greater strength and natural rust resistance.
Correct usage is crucial to prevent damage to the screw heads or the items being fastened. Ensure the correct size of the Allen wrench and the tightening direction to avoid damaging the screw holes or the assembled product.
Hexagon head cap screws may gradually loosen over time due to vibration or heat. Preventive measures include forceful tightening (without over-tightening), using thread-locking adhesives, or opting for screws with built-in anti-loosening features.
*Including some distributors, etc.
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J.W. Winco was originally founded as Ganter in 1894 in Germany. Winco specializes in parts manufacturing. Parts offerings the operating parts segment including handles, adjusting, and positioning parts; clamping parts segment featuring tensioning, clamping, switching, and levers; and finally the machine parts segment with indexing, locking, mounting, connecting elements, guides, spindles, rollers, magnets, casters, and wheels. Winco’s complete catalog contains over 75,000 standard parts. Winco is also ISO 9001 certified. Winco offers free CAD downloads and technical documentation for many arts.
In 1960, Strainsert developed the Internal Strain Gage process, bonding and sealing strain gages inside small holes of load pins, load bolts, load studs and load cells. This innovation facilitated the development of robust and accurate force sensors and their usage in more challenging applications and harsh environments. 65 years later, Strainsert remains an AS9100 certified designer and manufacturer of superior force sensors for many Aerospace, Industrial, Marine, Military and Automotive applications. Visit our website to schedule a consultation on a specific application or help in designing a custom force sensing solution for your company.
Rainbow Nut and Bolt, Inc. was founded in August 1978 in Santa Ana, California. The company is a distributor of various fastening products including special finishing coating and reworking services. The company sells a complete line of fasteners including nuts, bolts, socket products, anchor products, and screws. The 16 materials available for refinishing include blue zinc, black oxide, and nickel. Reworking services including special cut to length, re-threading, re-tapping, drilling, and bending.
Anchor Bolt & Supply, Co. was established in 1952 in Odessa, Texas to provide the Permian Basin region of West Texas with a readily available source of threaded fasteners. Today the company is a manufacturer and distributor of fasteners with over 14,000 line items on shelves as well as more that are available through vendors. The company has 11 product lines of fasteners as well as miscellaneous hardware & accessories such as paint, tape, and other materials. In addition to its product lines, the company offers 24-hour free customer service.
Bolt Products Inc. was established in 1947 and operates out of San Dimas, California. Bolt Products is a wholesale distributor of fastening tools both domestically and internationally and is ISO 9001:2015 certified as well as RoHS and WEEE compliant. Bolt Products offers many types of products including bolts and plastic fasteners, nuts, lug nuts, nut retainers, cap nuts, bushings, plugs, ball studs, brass inserts, stud receivers, cable ties, cordgrips, liquid-tight flexible conduits, marking systems, and clips.
Nationwide Industrial Supply was founded in Youngstown Ohio in 2006. Nationwide Industrial Supply is a distributor of industrial equipment, serving both public and private institutions and companies in the United States and overseas. Some of Nationwide’s offerings maintenance, operating products, safety supplies repair products, storage equipment, tubing, pipe, and hose material, electrical and plumbing supplies repair and operating products, storage equipment, safety supplies, material handling equipment, shelving, and work platforms.
Standard Bolts & Nuts Sdn. Bhd., established in 1997, is a supplier of bolts, nuts, and various fasteners in Selangor Darul Ehsan, Malaysia. The company offers various products such as anchors, pins, clips, rivets, screws as well as sockets and washers, which are designed to meet specific client requirements. It strategically sources cost-effective products from many brands to fulfil the changing needs of its markets. The company has acquired both the Malaysia Power Brand Award and the Quality Excellence Award for trading.
Ranking as of March 2026
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Anchor Bolt & Supply Co. |
13.7%
|
| 2 | Quality Socket Screw Mfg. Corp. |
12.6%
|
| 3 | Strainsert Co. |
12.6%
|
| 4 | Standard Bolts & Nuts Sdn. Bhd. |
11.6%
|
| 5 | J.W. Winco, Inc. |
11.6%
|
| 6 | Bolt Products Inc. |
9.5%
|
| 7 | SRI-Supplies For Racing & Industry, LLC |
9.5%
|
| 8 | Rainbow Nut and Bolt, Inc. |
8.4%
|
| 9 | Nationwide Industrial Supply |
6.3%
|
| 10 | Takachi Electric Industry Co., Ltd. |
4.2%
|
Derivation Method
The ranking is calculated based on the click share within the hexagon head cap screw page as of March 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
|
5 | 71.4% |
|
Japan
|
1 | 14.3% |
|
Malaysia
|
1 | 14.3% |
1,727 products found
1,727 products
Kyowa Kogyosho Co., Ltd.
400+ people viewing
Last viewed: 1 day ago
■Features There are hexagon socket head bolts and polished bolts used in large presses and machine tools.
Nakajima Koki Co., Ltd.
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Developed jointly with Kyokuto Seisakusho Co., Ltd., a leading manufacturer that boasts high technological capabilities. A new revolutionary produc...
4 models listed
Cains Co., Ltd.
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■Features ・Coarse thread ・Full screw
Ikeda Metal Industry Co., Ltd.
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■Features ・Head height is even lower than low-head CAP - Eliminates the need for counterbore holes and reduces protrusion of the head. ・Additiona...
Fujimoto Sangyo Co., Ltd.
170+ people viewing
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Features ■High strength ・Tensile strength 900-1,000N/mm2 ・Austenitic mechanical property standard JIS B 1054 Achieved A2-90/100, which is outside...
7 models listed
Nakajima Koki Co., Ltd.
360+ people viewing
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Developed jointly with Kyokuto Seisakusho Co., Ltd., a leading manufacturer that boasts high technological capabilities. A new hexagon socket head ...
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Teikoku Seizai Co., Ltd.
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Bolts with hexagonal socket heads are generally used without being assembled with nuts, so it is more accurate to call them screws. However, since ...
Ikeda Metal Industry Co., Ltd.
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■Features ・Improve the safety of bolt connections by accurately determining the axial force (=tightening force) ・Since the axial force is always ...
Bossard Co., Ltd.
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Hexagon socket head bolts made of materials such as RENY and PPS PEEK. RENY, an engineering plastic reinforced with 50% glass fiber, has the highes...
Nakajima Koki Co., Ltd.
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Developed jointly with Kyokuto Seisakusho Co., Ltd., a leading manufacturer that boasts high technological capabilities. A new revolutionary produc...
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Wilco Co., Ltd.
280+ people viewing
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■Features - Hexagonal wrenches (hexagonal wrenches) used with hexagon socket head bolts (cap bolts) require less space when tightening, so they are...
10 models listed
Azumaneji Co., Ltd.
450+ people viewing
Last viewed: 1 day ago
■Aluminum screws The characteristics of aluminum (alloy) are: 1. Light weight (approximately 1/3 times that of steel or stainless steel), 2. Colori...
Fujimoto Sangyo Co., Ltd.
270+ people viewing
Last viewed: 1 day ago
Features ■High strength: 4 times the proof strength of SUS304 (A2-50) and 2 times that of SUS316 (A4-70) Although it is made of stainless steel, BU...
8 models listed
Nakajima Koki Co., Ltd.
340+ people viewing
Last viewed: 8 hours ago
Developed jointly with Kyokuto Seisakusho Co., Ltd., a leading manufacturer that boasts high technological capabilities. A new hexagon socket head ...
4 models listed
Mizuho Metal Co., Ltd.
190+ people viewing
Last viewed: 17 minutes ago
There are types with claws that are easy to work with, and hexagonal types that are reasonably priced. There is also a type with holes for sealing....
Wilco Co., Ltd.
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■Features - A set screw with a hexagonal hole in the head. ・Tighten using a hexagonal bar-shaped wrench (hexagon wrench) in the same way as the he...
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Takachi Electric Industry Co., Ltd.
320+ people viewing
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Hexagon socket head bolt for AW/AWN series. A bolt with a spring washer that prevents it from loosening. Additionally, the appearance of the AW/AWN...
Yamamoto Neji Kohan Co., Ltd.
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Nakajima Koki Co., Ltd.
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Hexagon socket head bolts are bolts developed to enable high-strength tightening. The development of this bolt led to rapid expansion and developme...
10 models listed
Bossard Co., Ltd.
180+ people viewing
Last viewed: 12 hours ago
Bolts and screws with a hexagonal or other shaped hole in the head are called "hole-shaped". "Hole" products, which tighten through the recess on t...
20 models listed
Wilco Co., Ltd.
270+ people viewing
Last viewed: 18 hours ago
Tighten using a Torx wrench, etc. Torx® is a registered trademark of Acument Intellectual Properties, LLC.
9 models listed
Yoshikawa Shoko Co., Ltd.
240+ people viewing
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Yoshikawa Shoko Co., Ltd.
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Bossard Co., Ltd.
660+ people viewing
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A hexagon socket head bolt with a lower head (approximately 55 to 65%) compared to general hexagon socket head bolts. Also called low head cap or h...
Yamamoto Neji Kohan Co., Ltd.
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Saima Corporation
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■HE02 ・Material: Stainless steel A2 ・Standard packaging: 100 pieces
Saima Corporation
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Tamper-proof screws TRF® are security screws that are difficult to remove without using special tools. Since they cannot be removed with commercial...
Bossard Co., Ltd.
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Also called special low head cap or hexagon socket cap. This original Bossard product was developed to solve the problem of not wanting to expose t...
Azumaneji Co., Ltd.
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■Screw with small head Screws with small heads have small head diameters, so they are suitable for fastening in 1. locations where clearance is lim...
