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This section provides an overview for nut runners as well as their applications and principles. Also, please take a look at the list of 27 nut runner manufacturers and their company rankings. Here are the top-ranked nut runner companies as of December, 2024: 1.Dixon Automatic Tool, Inc., 2.LeJeune Bolt Company, 3.Design Tool, Inc..
Table of Contents
A nut runner is a power tool that can automatically tighten nuts.
Some models can be used for screws and bolts by changing sockets as well as nuts. Most nut runner is hand-held, but there are also fully automated models. Nut runners can set the tightening strength, thus ensuring homogeneous and highly precise tightening.
Nut runner is widely used in fastening areas where reliability is required because they enable highly accurate and reliable fastening as well as simplify the work.
Because of the homogeneity and high precision of tightening with nut runners, they are widely used in automobile parts, motorcycles, shipbuilding, and other areas where safety assurance is required. They are also often used for equipment inspections requiring more precise tightening, such as at gas stations and chemical plants, and at construction sites where steel frames of buildings and other structures are assembled.
Nut runners may also be incorporated into fully automated automatic assembly equipment. When selecting nut runners, the torque range of the nuts and bolts to be used should be checked.
Nut runners can be broadly classified into two types: those driven by an electric motor and those driven by air pressure. The motor is used to rotate the torque, and the nut runners are set to automatically stop when tightening is completed.
Since the torque and angle are electrically controlled by an electric motor, it is more accurate than a pneumatic drive, and work history and data can be kept. Cordless types are also available and have become popular in recent years.
It is important to choose an insulated or pneumatically operated nut runner if there is a risk of electric shock due to its tendency to generate heat. Also, since retightening is not possible, it is necessary to loosen the nut once when retightening it again.
An air compressor is required, and compressed air is used to turn an air motor to control torque. The advantage is that there is no risk of electric shock, but the disadvantage is the high cost of electricity due to the use of an air compressor. This type has been used for a long time because it generates less heat than an electric motor drive and is suitable for use over a long period.
The electric type uses an AC servo, DC brushless, or other motor that can control the number of rotations, while the air-driven type uses an air motor driven by pneumatic pressure. The control unit is either built-in or installed separately. Their rotation is transmitted to the drive shaft via a planetary gear reducer.
Some high-performance types have a torque detection function and can control rotation by torque, while others can be equipped with an arm that detects position and posture.
Nut runners are nut-tightening tools, hence the name, but they can also be used for screws and bolts that are fastened by rotation. The difference between electric screwdrivers and impact wrenches is that the tightening torque can be accurately controlled.
While electric screwdrivers and impact wrenches have a structure in which the shaft idles when the specified torque is reached, electric nut runners have a function in which the rotation of the motor decelerates as it approaches the specified torque value, thereby stopping the motor at the exact torque value. In recent years, electric nut runners have become the mainstream for more accurate tightening.
The nut runners perform tightening while controlling the rotation speed and torque according to the torque value at the time of tightening. Although their rotational speed is inferior to that of electric screwdrivers and impact wrenches, they feature less error in torque value after tightening and less noise during operation.
Recent nut runners monitor changes in torque and angle during tightening to determine whether tightening is good or bad, and can detect such problems as bolts being inserted at an angle, washers being forgotten, or two washers being inserted at the same time. Such data can be stored in the nut runners themselves or wirelessly transferred to a PC or other device and recorded as data during assembly.
In addition, advanced models can also detect the posture and position of the nut runners. It can determine the position of the hole to be tightened to determine if the screw or bolt being tightened matches the specified one, or it can determine the difference between screws and bolts from the screw hole position and change the tightening torque by itself.
*Including some distributors, etc.
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Design Tool, Inc., founded in 1988 and headquartered in Conover, USA, is a manufacturer of automatic screwdriver systems. The company primarily offers automatic feed and drive systems for industries involved in product assembly, including automotive, telecommunications, and aerospace. It designs customized systems tailored to the customer’s specific fasteners and applications. Its product line includes handhelds, machine-built components, and complete turnkey systems. The company also provides various accessories, including enclosures, supply hoppers, and work arms.
WEBER Schraubautomaten GmbH, established in 1956 and headquartered in Wolfratshausen, Upper Bavaria, Germany, is a manufacturer and supplier of automated screwdriver solutions. The company has production facilities and sales offices in Germany, France, North America, Switzerland, Italy, the Czech Republic, and China. WEBER’s product portfolio includes mechanical fasteners, micro medical pins and screws, large bolts, and heavy fasteners. The company designs standalone systems such as "Feed while you drive." The company has global outreach, serving engineers all over the world.
Visumatic Industrial Products, established in 1966, is a manufacturer of automated fastener feeding and driving equipment for industrial organizations undertaking assembly work, such as clips, bolts, pins, nuts, and specialty fasteners used in machine builders, general manufacturing, medical, and defense industries. The Lexington, Kentucky-based company provides standard and pistol-grip handheld solutions for ergonomic, quality, and speed improvements. The company offers various fully automated fixed systems and robotics, such as Viper 4-axis SCARA robotic screw driving system, dual x-y robot, rotary indexing, customer re-programmable robotic software, and multi-spindle systems.
Mountz Torque, founded in San Jose, CA, in 1965 is a manufacturer of torque products such as Robotic Screwdrivers, Torque Calibration, and Measuring Torque. The company's product portfolio includes Preset Torque Limiters, Torque Sensors, Run Down Adapters, Calibration Equipment and Torque analyzers and Sensor Accessories. Their products are used in the energy sector for wind turbine assembly and maintenance, critical aerospace components and systems and automotive assembly lines and maintenance applications. The company serves industries such as Oil and Gas, Aerospace and Defense, Automotive and Transportation, Construction, and Power Generation.
Greenlee Textron, Inc., founded in 1862, operates as a significant manufacturer in the industrial and electrical tool industry. The company provides a range of products and solutions related to warehousing, transportation, and general storage. As a key contributor in the machinery manufacturing sector, Greenlee Textron, Inc. offers power-driven hand tools and other general purpose machinery, addressing various industrial needs. The company's business in multiple locations, including Rockford, IL, and Southaven, MS, underscores its run to serving diverse sectors and fulfilling the requirements of professionals worldwide.
ASG is a division of Jergens, Inc., was founded in 1976, and headquartered in Cleveland, Ohio. ASG both manufactures and distributes solutions for assembly including precision torque and angle DC electric fastener systems. ASG is ISO 9001:2015 certified. ASG groups include ASG Express, ASG Precision Fastening, ASG Automation, and ASG Integrated Services. Together they specialize in electric and manual screwdrivers, production aides, tool accessories, air motors, pneumatic torque control tools, pulse tools, torque wrenches, current control tool systems, automation systems, auto feed systems, air grippers, torque arms, screwdrivers & nutrunners for automation, and peripheral automation equipment.
LeJeune Bolt Company, established in 1922 and headquartered in New Orleans, Louisiana, USA, is a manufacturer and supplier of bolts, nuts, and other fasteners. The company's product range includes bolts, nuts, and fasteners, catering to diverse industries such as construction, manufacturing, oil and gas, mining, and transportation. Its services include customization of fasteners, technical support, and training on products and services. The company is devoted to delivering quality fasteners. With nearly a century of experience, it consistently meets expectations in quality and service.
Dixon Automatic Tool, Inc. was originally founded in 1946 in Rockford Illinois. Dixon Automatic Tool is an automated assembly products and services supplier. Dixon Automatic Tool offerings include automatic screwdrivers, automatic nut-runners, automatic part placers, automatic setting systems, robotic end effectors, assembly work cells, hand-held drivers, feeder bowls and feed systems, and features Stöger products for customers’s automation needs. Dixon Automatic Tool also offers two escapement types that can be tooled to escape and transfer piece parts, as well as electric hand-held screwdrivers.
Express Assembly Products, LLC, established in 2005 and based in Nashua, New Hampshire, USA, is a supplier of electric torque tools and supplies directly to end-users. The company offers a competitive pricing, 30-day evaluation period, on-site inventory, same-day shipping, and a one-year warranty on all products. Serving more than 5,000 customers across the U.S., Canada, Mexico, and Australia, the product inventory includes electric & air torque screwdrivers, pulse tools, fastening accessories, and screwfeeders. Additional services encompass one-year warranties, flat-rate repairs, on-site assistance, and 24-hour repairs for an extra charge.
ESTIC CORPORATION, established in 1993 and headquartered in Osaka, Japan, is a manufacturer of energy-saving auto-assembly machines. The company specializes in designing, producing, and maintaining energy-saving auto-assembly machines, including servo and handheld nut runners. It offers a range of tightening and press-fitting solutions for various industries, such as automotive, aerospace, and construction machinery. Its patented Estic pulse technology reduces reaction force during fastening, promoting safety and preventing workplace injuries. The company also provides custom-made assembly solutions and discontinued product catalogs for its clients' convenience.
Founded in Okayama, Japan in 1972, CORETEC INC provides support and machinery across industries. CORETEC’s factory automation systems are commonly used in the automotive industry. CORETEC also creates servo assembly tools and optical vision inspection systems. Additionally, CORETEC designs, constructs, and maintains a variety of renewable energy solutions with thin film and flexible solar cells. CORETEC also offers services for information and communication technologies (ICT).
Chicago Pneumatic, founded in 1901 and now a subsidiary of Atlas Copco Group of Sweden, is a manufacturer headquartered in Rock Hill, South Carolina, specializing in industrial tools and solutions, particularly power tools and air compressors. The company offers a range of products, including cordless, electric, hydraulic, and pneumatic tools. They also provide workplace equipment and solutions, such as lift equipment, workshop cranes, workshop presses, and torque wrenches. Additionally, CP offers compressors, construction equipment, and air motor solutions. These products find applications in various industries, including vehicle service, maintenance and repair of mining, construction, and infrastructure equipment, as well as industrial production.
Norbar Torque Tools Limited, established in 1943 and headquartered in Willoughby, Ohio, United States, is a manufacturer and supplier of torque tools and related accessories and equipment. The company's solutions include torque screwdrivers, electronic torque wrenches, and handheld battery tool multipliers. It also offers ultrasonic bolt measurement devices and calibration equipment. These products are used in various applications where nuts and bolts need to be tightened to specific requirements, such as in traditional engine construction. It offers after-sales service and support that includes the supply of spare parts and repairs.
Milwaukee Tool, established in 1924 and headquartered in Brookfield, Wisconsin, USA, is a manufacturer of heavy-duty power tools, hand tools, and accessories The company offers a wide array of accessories, such as bits, blades, and sockets, to complement their cordless and corded power tools, including hammer drills, saws, and wrenches. Milwaukee Tool's products are utilized by construction workers, mechanics, electricians, and contractors for various tasks, including drilling, sawing, fastening, vehicle repairs, electrical installations, and construction projects.
ITH Bolting Technology headquartered in Meschede, Germany is a manufacturer and system supplier of bolting technology that distributes industrial bolting, torque wrenches, and tensioning tools solutions. The company’s bolting tool portfolio contains hydraulic bolt tensioning cylinders and hydraulic torque wrenches. They also offer bolting solutions for tightening and loosening industrial bolt connections from M16 (3/8’') and up. Additionally, they offer tension and torque tool rental. Their products are used in various industries such as wind energy, oil and gas, power generation, mining, and shipbuilding.
Unitec Power Tools (Unitec) was founded in 1990 and operates out of Norwalk Connecticut and Deer Park, Texas. The company is a developer and producer of tools for metalworking, concrete, masonry, petrochemical, hazardous environments and Ex Zones, underwater, and mining. The company developed the first air-powered band saw in 1991. The company's tool types include cutting tools, surface preparation tools, dust collection systems, safety tools, and various specialty tools. The company offers support in both English and Spanish.
Ingersoll Rand Inc. was founded in 1859 and is headquartered in Davidson, North Carolina. The company serves medical, energy, specialty vehicle, and other industries across the world with fluid transfer and other liquid handling systems. The company has two primary segments: Precision and Science Technologies and Industrial Technologies and Services. Precision and Science Technologies manufactures syringe pumps, hydrogen compression systems, and other components under brand names such as Air Dimensions, Milton Roy, and Zinnser Analytic. The Industrial Technologies and Services segment manufactures and services air and gas compression products under Ingersoll Rand, Nash, Emco Wheaton, and other brand names.
Maschinenfabrik Wagner GmbH & Co. KG, founded in 1962 and based in Much, Germany, is a manufacturer and supplier of bolting technology equipment. The company's product range includes battery nutrunners, electric nutrunners, pneumatic nutrunners, hydraulic torque wrenches, and tensioners. These products are designed for secure fastening, precise torque application, and efficient tensioning. The company primarily serves the wind energy, energy & power plants, oil & gas, and traffic engineering industries. The company also offers services such as customer service, maintenance & repair, mobile maintenance service, and a rental business.
PROTO Industrial Tools, originally founded as PLOMB Tools in 1907 and currently a subsidiary of Stanley Black & Decker, is an American manufacturer and distributor headquartered in Jackson, Tennessee, specializing in industrial tools. Under the PROTO brand, the company offers industrial tools, including master sets, tethered tools, drive tools, and related accessories. The company also operates under the STANLEY TOOLS brand, offering tool storage solutions, hand and impact sockets, screwdrivers and hex keys, and cutting tools. These tools are heat-forged and nickel-plated to withstand harsh work environments in various industries, including automotive and aerospace, oil, gas, and petrochemical, and power generation.
Klein Tools is a fifth-generation family-run producer of hand tools founded in 187 and headquartered in Lincolnshire, Illinois. Klein Tools sells worldwide directly and through distributors. Klein Tools has a family of companies under its brand including Alco, Civitella, Mumme Tools, Tulmex, and Wattmaster. Klein Tools serves several industries including construction, HVAC/R, plumbing, telecom, municipal, and industrial. Some of the tools Klein Tools produces include non-contact voltage tester bens, multi-bit screwdrivers, digital circuit breaker finders, advanced circuit tracer kits, and multi-bit electronics screwdrivers.
STANLEY Engineered Fastening, founded in 1910 and headquartered in Towson, Maryland, is a manufacturer and distributor of fastening and assembly solutions. The company caters to diverse industries, including aerospace, automotive, construction, electronics, and medical, offering a product range that comprises brackets for supporting structures, critical application fasteners like lockbolts and blind rivets, inserts for reinforcement, screws and bolts for fastening, and various types of hand tools for installation and removal of components. The company has multiple locations strategically positioned near its customers worldwide, including the USA, Germany, and Japan.
Blue Tools LLC, founded in 2012 and headquartered in Oakville, Ontario, Canada, is a distributor and retail supplier of pneumatic tools, motors, and torque tools. The company's products include cutting tools, pneumatic assembly tools, and torque testing equipment. These products are used for cutting, grinding, and shaping metal, wood, and composites. It also offers a line of accessories that include cutting discs, drill bits, and band saw blades. Its clients include commercial trade services providers and individual trade professionals, and its products are available for purchase from its online store.
Siemens EDA is an American distributor of integrated circuit (IC) as well as printed circuit board (PCB) design and verification software that was established in 1981 as a subsidiary of the German company Siemens AG. Based in Wilsonville, Oregon, the company offers emulation, simulation, layout, wire harness, and design-for-manufacturing software tools for use in conceptualizing and testing various IC or PCB mockups. This saves time in the prototyping and troubleshooting stages of their production processes, increasing efficiency while reducing risk of cost overages. Siemens EDA chiefly serves clients in the semiconductor, aerospace, defense, and consumer electronics sectors.
Utility Parts Central Inc. is a supplier of utility equipment and related parts that was established in 2005 in Richmond Hill, Ontario, Canada. The company stocks items from a range of international brands including Terex Utilities, Altec, and Versalift. These products include crane parts, digger derrick components, and auger drill components. It also offers accessories, such as tool trays, tool holders, and digger attachment adaptors. The company mainly serves clients in the construction, machine tools, and telecommunication industries.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Dixon Automatic Tool, Inc. |
11.7%
|
| 2 | LeJeune Bolt Company |
6.7%
|
| 3 | Design Tool, Inc. |
6.1%
|
| 4 | WEBER Screwdriving Systems, Inc. |
6.1%
|
| 5 | Greenlee |
5.0%
|
| 6 | Chicago Pneumatic |
5.0%
|
| 7 | ESTIC CORPORATION |
4.7%
|
| 8 | Express Assembly Products, LLC |
4.7%
|
| 9 | CS Unitec, Inc. |
4.7%
|
| 10 | ASG, Division of Jergens, Inc. |
4.7%
|
Derivation Method
The ranking is calculated based on the click share within the nut runner 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
|
9 | 60.0% |
|
Japan
|
4 | 26.7% |
|
India
|
1 | 6.7% |
|
Germany
|
1 | 6.7% |
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