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This section provides an overview for countersunk head nails as well as their applications and principles. Also, please take a look at the list of 5 countersunk head nail manufacturers and their company rankings. Here are the top-ranked countersunk head nail companies as of December, 2024: 1.Simpson Strong-Tie, 2.Wharton Hardware and Supply, 3.Mechel.
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1985-2014: Worked for Alstom Corporation, ABB Corporation, and Gadelius Corporation, designing Jungstrom air preheaters and mechanical design of diamond soot blowers. (ABB Corporation: https://new.abb.com/jp)
2014-2021: Worked as an engineering and project manager at Alvos Inc.
https://www.linkedin.com/in/yoichi-hiroki-92192394/
Countersunk head screws, also known as flat head screws, feature a tapered head that narrows towards the screw side, resembling a dish when viewed from the side. Unlike flat head nails, which have a flat top face, the top face of a countersunk head screw is rounded. These screws have a relatively small nominal head diameter and typically feature a slotted or cross-shaped drive.
Figure 1. Example of Using Countersunk Head Screws
Countersunk head screws are primarily used as fasteners in applications with female threads, such as door closers, knobs, and hinges. They are designed to fit into a tapered counterbore in the fastened object, ensuring the screw head does not protrude beyond the object's surface, as illustrated in Figure 1.
While similar in application to round countersunk head nails, which have a rounded top face, countersunk head screws feature a flat head that can prevent snagging on cross-holes.
Countersunk head screws, like their nail counterparts, are secured by screwing into a tapped female thread without the need for a nut. They are tightened using a Phillips-head or flat-blade screwdriver inserted into the cross-hole or slot. The length of these screws is measured from the top of the head to the end, in contrast to ordinary bolts, which are measured excluding the bolt head.
Figure 2. Types, Materials, and Shapes of Countersunk Head Screws
Countersunk head screws are categorized by head hole shape and material strength.
Different headhole shapes accommodate specific tools for tightening. The two main types are Cross (Phillips) and Suri-Wari (Flat). Phillips types are common, with a slightly concave pressure surface, while Pozidriv types feature almost vertical sides. Flat holes, or minus holes, accommodate a flathead screwdriver.
Figure 3. Hole and Tool Geometry of the Head of Countersunk Head Screws
Hexagonal and Torx holes are also available, providing higher tightening force and requiring specific tools for operation.
Materials for countersunk head screws include steel, stainless steel, and nonferrous metals, each classified by strength and applicable standards.
Standards for countersunk head screws include ISO 7046, among others. It's important to match the screw to the female thread's standard to ensure compatibility. Additionally, countersunk head screws come in various sizes, typically from M2 to M8, with recommended lengths ranging from 4 to 60 mm.
*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.
R&W Rope. founded in New Bedford, Massachusetts, USA, in 1985, is a distributor of ropes and rope products. The company’s product portfolio includes polyester ropes, arborist ropes, climbing ropes, and ropes for jewelry and at-home crafts. It offers interior and outdoor design decorative marine hardware pieces like light bulbs, lighting fixtures, and switches. It also provides services of rigging, splicing, and design installations. The company also offers ropes with custom material, design, and color.
Mechel founded in Moscow, Russia, in 2003, is a manufacturer and producer of metals and metal products. The company’s product portfolio includes coking coal, iron ore, nickel, and steel sheets. It also generates electricity and exports coal to 50 countries. It has its own ports, a fleet of ships, and trains to transport its products around the world. The company’s products serve the industries of construction, manufacturing, power generation, and transportation. It is a member of the Russian Chamber of Commerce and Industry.
Wharton Hardware and Supply is a family-operated business that was founded in 1948 in Philadelphia, Pennsylvania and has branched to several locations across the United States. Wharton operates in 3 segments: products, sales & rental, and services. The products segment includes road & bridge concrete accessories, safety equipment, abrasives and cutting tool products, plumbing-related products, topological products, fasteners, bits and drill equipment, as well as power tools. The sales & rental segment offers heavy duty construction equipment from major brands. The services segment includes repair and testing for tools and equipment.
Simpson Strong-Tie, established in 1956, is a California-based company that serves as a supplier of solutions aimed at assisting individuals in the design and construction of more secure and resilient constructions. The company is motivated by a devotion to designing and producing structural connections, fasteners, and anchors that enhance and streamline conventional construction techniques while also creating performance-tested and authorized solutions for emerging building systems. All individuals interacting with the goods receive unparalleled technical support, guidance, and post-purchase assistance.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Simpson Strong-Tie |
25.0%
|
| 2 | Wharton Hardware and Supply |
25.0%
|
| 3 | Mechel |
16.7%
|
| 4 | R&W Rope. |
16.7%
|
| 5 | NBK America LLC |
16.7%
|
Derivation Method
The ranking is calculated based on the click share within the countersunk head nail 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
|
2 | 66.7% |
|
United Kingdom
|
1 | 33.3% |
76 products found
76 products
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Mounting screws, board mounting screws, and fixing nuts for various cases and boxes. Thread sizes are M2.3, M2.5, M2.6, M3, M3.5, M4, M5, and M6. P...
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■SP02 ・Material: Stainless steel A2 ・Standard packaging: 100 pieces
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Material: resin
Yamashina Co., Ltd.
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Nichi Seisakusho Co., Ltd.
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Hios Co., Ltd.
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■Main features ・DELTA PT is a registered trademark of EJOT, Germany. ・DELTA PT®, which was developed as a self-tapping screw for resin, has a spe...
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Hios Co., Ltd.
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■TW02 ・Material: Stainless steel A2 ・Standard packaging: 100 pieces
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Tapping screws for resin Nonsert® has been improved to have a special shape that prevents the resin frame from deforming or cracking. Quantity in ...
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