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This section provides an overview for single open-end spanners as well as their applications and principles. Also, please take a look at the list of 15 single open-end spanner manufacturers and their company rankings. Here are the top-ranked single open-end spanner companies as of December, 2024: 1.TOP Kogyo Company, Ltd., 2.GEDORE, 3.Beta Utensili.
Table of Contents
A single open-end spanner is a tool used primarily for tightening and loosening hexagonal bolts and nuts.
The part that grips the bolt or nut is called the "bore," and the width of the U-shaped opening is called the "two-sided width." A double-end spanner has a bore on both ends, whereas a single open-end spanner has a bore on only one end.
Spanner and wrench have the same original meaning in British and American English, respectively.
Single open-end spanners are used in various applications, from general DIY to professional workplaces. Single open-end spanners are mainly useful for tightening and loosening hex bolts and nuts. They are indispensable tools in all situations, including machinery and equipment, precision instruments, vehicles, engines, construction, furniture, and DIY.
The single open-end spanners have an open U-shaped tip, which allows it to be inserted from the side and is used for working on bolts and nuts in tight spaces. Since the single open-end spanners support and tighten at two points, it is not a tool suitable for applying large forces. Therefore, it is generally used as a temporary stop.
Most single open-end spanners have holes in the handle, through which a cord can be threaded to prevent it from falling when working in high places. Another advantage over double-ended wrenches is that they are easier to hold since they have a bore on only one side.
The single open-end spanners use the "leverage principle" to tighten or loosen a bolt or nut by generating a large force with a small force. The fulcrum is the center of the bolt or nut, the force point is the part of the hand holding the single open-end spanners, and the action point is the angle between the bolt or nut and the two points where the spanner meets.
By holding and turning the end of the single open-end spanners, the bolt or nut can be easily tightened or loosened. The single open-end spanners have two points of contact with the bolt and nut, while the wrench has six points of contact. Therefore, the wrench can apply more force to tighten the bolt or nut more firmly.
One side of the handle has a bore section that grips the bolt or nut. The two side widths are fixed. Convenient when the size of the bolt or nut to be used is the same.
This is a thinner-than-usual wrench. Used when working in tight spaces or when the bolt or nut is thin. Thin spanners are not suitable for large bolts and nuts, but useful for small bolts and nuts.
Normal single open-end spanners are not strong enough to be struck with a hammer or the like. Applying a force stronger than necessary may damage the bolt or nut or deform the wrench itself.
This striking wrench is strong enough to endure striking the handle with a hammer. It is used when removing or retightening rusted nuts and bolts is necessary.
The use of single open-end spanners suited to the purpose of work will affect work efficiency, safety, and accuracy of the finished product.
The part that clamps the bolt or nut is fixed, so select a wrench that matches the size of the bolt or nut. The size is not the diameter or radius. However, the distance between the "width of two sides" where the single open-end spanners fit the bolt or nut.
The size is marked in numbers on the handle. Basically, the size is marked in meters, but in rare cases, some sizes are in inches, so you need to check.
Some wrenches have a circular bore. Since the bore hits the entire circumference of the bolt or nut, it is difficult to dislodge or tamper with.
There are also single open-end spanners, double open-end spanners with bores on both ends and combination wrenches consisting of both a wrench and a spanner.
*Including some distributors, etc.
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Intercable Tools, established in 1970 in Brunico, South Tyrol, is a manufacturer of tools for processing low and medium-voltage cables and connection systems for the electrical, wind, and rail sectors. The company offers an extensive service portfolio, including electrotechnical equipment, bending, punching, and hydraulic tools, as well as hand and stripping tools. These products find applications in various industries, including automotive, telecommunications, construction, and electrical engineering. The company's aim is to develop precision tools with guaranteed product quality.
HOZAN TOOL INDUSTRIAL CO., LTD., established in 1946 in Naniwa-ku, Osaka, Japan, is a manufacturer and supplier of electronics and bicycle tools. Their product range includes soldering irons for electronics assembly, various types of multimeters for electrical measurements, pliers for wire manipulation, diverse screwdrivers for fastening tasks, and wire strippers for precise wire preparation. Additionally, they also offer chemical products such as anti-rust oils, freezer sprays, cutting oil, and dusters.
GEDORE is a German manufacturer of standard and industrial tools that was founded in 1919 in Remscheid, North Rhine-Westphalia. The company produces various hand tools such as wrenches, chisels, and hammers, as well as torque tools including torque multipliers and testers. It also offers specialty tool sets, such as electrical and plumbing toolkits. GEDORE maintains a network of subsidiaries and sales partners in more than 70 countries, with production facilities in South Africa, Brazil, England, and Austria.
TOP Kogyo Company, Ltd., a company founded in 1939 and headquartered in Sanjo City, Japan, is a manufacturer and supplier of hand tools. The company's product portfolio includes adjustable wrenches, PVC cutters, pliers, riveters, and various other hand tools. Hand tools find applications in various industries, including plumbing, metalworking, woodworking, HVAC (Heating, Ventilation, and Air Conditioning), and DIY/home improvement. The company also offers customer services, including customer support, product information, and a product catalog. The company is ISO 9001:2015 certified for its quality management system.
BETA UTENSILI S.P.A., established in 1932, is an Italian manufacturer and supplier of workshop tools and industrial equipment, headquartered in Sovico, Monza Brianza. The company's product range includes over 16,000 tools for professional mechanics, catering to car repairs, industrial maintenance, and more. Among their offerings are the modular workshop equipment lines of Racing System (RS) C55 and Beta C45PRO, which include workbenches, modules, and more. They also provide various tools such as measuring and marking tools, cutting and general maintenance tools, plumbing tools, and power tools. These tools and equipment find applications in diverse industries, including automotive, aerospace, and mechanical engineering.
King Tony Tools Co., Ltd. founded in 1976 and has its headquarters in Taichung City, Taiwan, is a manufacturer of hand tools, pneumatic tools, and automotive specialty tools. Their main products include socket sets, wrenches, screwdrivers, pliers, impact tools, and torque wrenches. These tools are used in various automotive, aerospace, construction, and manufacturing industries. They offer tool storage solutions, tool trolleys, and workbenches to provide efficient and organized storage. King Tony Tools Co., Ltd. also provides customized tool solutions for specific customer needs and requirements.
BSK is a manufacturer of safety tools designed for use in hazardous areas and ATEX zones, headquartered in Gipuzkoa, Spain. The company produces non-sparking tools, such as adjustable wrenches, axes and picks, hand saws, and hammers. It also offers pneumatic chisels, sockets, valve handles, and tool sets. These safety tools are explosion-proof, non-magnetic, corrosion-resistant, and manufactured from special aluminum-bronze and beryllium-copper alloys to eliminate the risk of sparks in hazardous environments. The company caters to diverse sectors, including oil and gas, chemical, pharmaceutical, bomb disposal squads, and hazardous materials handling.
STUBAI is a manufacturer of tools and machines for the woodworking sector that was established in 1960 and is headquartered in Fulpmes, Austria. The company produces a wide range of tools and machines, including spanners and wrenches, woodworking tools, woodcarving tools, woodturning tools and construction tools. Its products suchas saw blades, planers, and mortisers are used by a number of woodworking professionals and hobbyists around the world. The company also provides a range of services, including sales, training, and support.
NWS, founded in 1973 and headquartered in Solingen, Germany, is a manufacturer of hand tools, electronic tools, automotive tools, and various types of specialized tools. The company holds ISO 9001 certification, verifying that the products are manufactured to industry standards and delivering benefits such as precision, durability, and stability to customers. The broad range of products includes industrial tools, safety tools, electrojoining tools, plumber tools, and sheet metal forming tools made with streamlined CNC technology and precision. It offers a wide range of tools for professionals and DIY enthusiasts, serving industries such as automotive, electronics, construction, and general manufacturing.
SNA Europe, founded in 1850 and headquartered in Paris, France, is a manufacturer of hand tools. The company provides hand tools for the professionals working in the automotive, metal cutting, construction, and other industries. It has invented some other essential tools, such as the adjustable wrench, multi-component handles, and sandflex saws. With over 400 registered patents and multiple awards, the company offers more than 24,000 products and resources like tool finder on its website.
SUPER TOOL Co., Ltd., established in 1918 in Japan, is a manufacturer of general and specialized tools for building and bridge construction, civil engineering, shipbuilding, and similar industries. The company offers an extensive line of specialty tools used by tradespeople and skilled workers that includes ratchet wrenches, clamps, portable cranes, jig clamping tools, piping tools, and more. SUPER TOOL Co., Ltd. also offers custom tool design and production as well as custom machinery production for commercial clients.
TOPTUL is part of ROTAR Group, founded in 1981 and operating in Taichung, Taiwan. TOPTUL is a manufacturer and distributor of tools and hardware equipment around the world. TOPTUL is ISO 9001:2008 certified. TOPTUL products include master tool sets, wrenches, torque wrenches, hand sockets, bit sockets, socket accessories, impact sockets, pneumatic tools, power tools, hexagon, star key tools, screwdrivers, bits, power bits, pliers, hammers & striking tools series, tool storage, tool display, auto tools, VDE insulated & general electrician’s tools, TOPTUL accessories, and other tools.
Esco Company Ltd., established in 1972 and headquartered in Osaka, Japan, is a supplier of maintenance, repair, and operations tools, parts, and equipment. Some of its products include test instruments, magnets, office furniture, protective equipment, and generators, and it serves customers in various fields, including construction sites and office buildings. The company was started to market tools to the air conditioning and refrigeration industry in Japan, and every year since then, it has published a catalog of its tools. In 2015, the catalog reached 110,000 products, and the company has approximately 149,000 items in stock for delivery.
ABM Tools founded in1992, is in the business of manufacturing & exporting different types of industrial tools and machine tool accessories based in India. The company has different CNC machines, grinders, shapers, power presses and others. In inspection workshop there are numbers of inspection instruments like master gauges, profile projector, 3D coordinate measuring machine etc., to meet a wide range of needs. Their products are being exported to major countries around the world.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | TOP Kogyo Company, Ltd. |
22.2%
|
| 2 | GEDORE |
16.7%
|
| 3 | Beta Utensili |
13.9%
|
| 4 | HOZAN TOOL INDUSTRIAL CO., LTD. |
11.1%
|
| 5 | Intercable Tools |
8.3%
|
| 6 | King Tony Tools Co., Ltd. |
5.6%
|
| 7 | ABM Tools |
5.6%
|
| 8 | SNA Europe |
5.6%
|
| 9 | SUPER TOOL co. ltd. |
5.6%
|
| 10 | STUBAI |
2.8%
|
Derivation Method
The ranking is calculated based on the click share within the single open-end spanner 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.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
Japan
|
4 | 30.8% |
|
Italy
|
2 | 15.4% |
|
Germany
|
2 | 15.4% |
|
Taiwan
|
2 | 15.4% |
|
Spain
|
1 | 7.7% |
|
Austria
|
1 | 7.7% |
|
India
|
1 | 7.7% |
46 products found
46 products
Nakamura Manufacturing Co., Ltd.
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■Features ・When the predetermined torque value is reached, you will hear a clicking sound and feel to know if it has been tightened. ・Types with ...
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■Features - Titanium combination spanner set. It is lightweight, has good corrosion resistance, is non-magnetic, and has high strength. - For tight...
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■Features - Approximately 60% lighter than conventional products (made of steel). Excellent corrosion resistance. It is non-magnetic. The strength ...
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■ Features ･ A super -thin spanner set with only 1.5mm thickness. ･ Glasses, a spanner combination type. ･ The head has a 30 ° bending angle. ■ Us...
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■ Features ･ Spanner is a combination type of glasses wrench. ■ Use ･ To attach and remove hexagon bolts, nuts.
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■ Features ･ Spanner is a combination type of glasses wrench. ■ Use ･ To attach and remove hexagon bolts, nuts.
Miki Neturen Co., Ltd.
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JIS B 4630 (H class) heavy duty single-ended spanners are available. *Other model numbers are available.
10 models listed
Miki Neturen Co., Ltd.
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O-type single-ended spanners are available.
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■Product details ・25% longer and 47% stronger than the standard 600N series. - Although it has a slim design, it has a double T-structured handle ...
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■Product details ・25% longer and 47% stronger than the standard 600N series. - Although it has a slim design, it has a double T-structured handle ...
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■Product details ・25% longer and 47% stronger than the standard 600N series. - Although it has a slim design, it has a double T-structured handle ...
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■Product details ・25% longer and 47% stronger than the standard 600N series. - Although it has a slim design, it has a double T-structured handle ...
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■Product details ・25% longer and 47% stronger than the standard 600N series. - Although it has a slim design, it has a double T-structured handle ...
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■Product details - Head rotates 180°. -Uses a swinging head, allowing work at any offset angle. ・The sides of the body are anti-slip. *The head ca...
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■Product details - Head rotates 180°. -Uses a swinging head, allowing work at any offset angle. ・The sides of the body are anti-slip. *The head ca...
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■Product details - Head rotates 180°. -Uses a swinging head, allowing work at any offset angle. ・The sides of the body are anti-slip. *The head ca...
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■Product details - Comes with a switching lever so you don't have to worry about pulling out a wrench even when tightening long bolts. - Comes with...
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■Product details - Comes with a switching lever so you don't have to worry about pulling out a wrench even when tightening long bolts. - Comes with...
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■Product details - Comes with a switching lever so you don't have to worry about pulling out a wrench even when tightening long bolts. - Comes with...
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■Product details ・Glasses 15° offset ・Excellent rust prevention, corrosion resistance, and chemical resistance. *As this is an imported product,...
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■Product details - Comes with a switching lever so you don't have to worry about pulling out a wrench even when tightening long bolts. - Comes with...
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■Product details ・25% longer and 47% stronger than the standard 600N series. - Although it has a slim design, it has a double T-structured handle ...
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■Product details ・This is an innovative combination wrench that incorporates a ratchet gear structure in the glasses part. ・Excellent durability ...
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■Product details ・25% longer and 47% stronger than the standard 600N series. - Although it has a slim design, it has a double T-structured handle ...
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■Product details ・This is an innovative combination wrench that incorporates a ratchet gear structure in the glasses part. ・Excellent durability ...
NT Tools Co., Ltd.
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Used for tightening caps on collet holders, etc.
