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Spanners are one of the most common hand tools found in any tool bag, box, or kit and are used for fastening and loosening nuts or bolt heads with a hexagonal shape. Spanner tools are also commonly called wrenches, particularly in American English. They are typically made from hardened chrome vanadium steel or beryllium copper. The most common types can consist of a ring-style spanner on one end and an open jaw spanner on the other (a combination spanner), or two open jaw ends (an open-ended spanner).

The ring end recess, if present, is generally a six-point or twelve-point opening. This ring end will most likely match the size of the open jaw end, but always check the size marking each tool. The open jaw is typically offset by 15 degrees to allow for greater freedom of movement during operation, which also allows a higher torque force to be applied to help turn the chosen fastening.

Ratchet spanners include a mechanism that helps the user apply maximum force with minimal effort. The mechanism allows the user to use the spanner to tighten a nut or bolt, then move the handle back to the starting position with the head remaining on the nut or bolt without loosening it.

Spanners are available in a variety of metric (mm) and imperial (in) sizes to allow for greater functionality across a wider range of applications, though adjustable spanners (or shifting spanners) are often a preferred choice because users can increase or decrease the size with ease. Our range includes products from leading brands such as Bahco, Facom, Ega-Master, Stanley, Wera & RS PRO, and are available as individual pieces or as part of a larger spanner set.

### How do Spanners Work?

In the case of open-jaw spanners, these tools work by holding the opposite sides of a nut or bolt to channel the physical movement of the user, applying torque force to the fastening so that it can be turned. The same rules apply to ring-style spanners, the only difference being that the ring fully encases the fastening rather than applying force to opposite sides. Depending on the material they are made from, spanners can often withstand large amounts of torque being applied to stubborn fasteners.

### What are the Different Types of Spanners

Combination Spanners - A combination spanner will have the open jaw spanner on one end and the ring-style spanner on the other.

Open-Ended Spanners - As the name suggests, these tools have an open jaw at each end, however, they often differ in size.

Ratchet Spanners - Ratchet spanners allow the angle of the tool to be adjusted by the user without removing it from the fastening. Also known as socket wrenches: view our range and ratchet spanner sets in our socket wrenches section.

Ring Spanners - Ring-style spanners have enclosed openings to grip the complete fastening rather than just opposite sides. Double-ended ring spanners often have offset handles to improve access to nuts and bolts.

C Spanners - Also known as hook spanners, these are high-quality tools designed to loosen retaining rings and adjust chains. View our range of [C Spanners here.](/web/c/hand-tools/spanners-sockets-wrenches/c-spanners/)

### Who uses spanners?

Spanners are used across many industries, such as automotive, aerospace, construction, and manufacturing, because of their functionality and versatility. They are ubiquitous tools found everywhere from home tool sets to factory floors. For domestic work or DIY purposes, spanners serve an abundance of purposes. We recommend getting a spanner set for the home to ensure that you always have the right sized spanner on hand.



High-quality spanners for all your tightening needs. Durable, reliable, and versatile spanners in various sizes. Get the job done with precision and ease. Shop now at RS Group.

Spanners | Combination, Open End & Ratchet Spanners | RS

Spanners

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24mm Spanners | RS

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STAHLWILLE Ring Spanners | RS

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Imperial Spanners | RS

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Metric Spanners | RS

Insulated Spanners | RS

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Buy from our selection of Spanners from CK. At RS, we strive to give you the best offers from our supplier and to promptly deliver in the shortest time.

CK Spanners | RS

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Teng Tools Spanners | RS

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Open Ended Spanners | RS

An open-ended spanner is a hand tool used to tighten or loosen nuts, bolts or any other fasteners and is also know as a crows foot spanner. The open ends often sit at a 15-degree angle to the spanner shaft which allows it to be used in confined spaces where there is little room for movement. This type is spanner is a common piece of equipment, found in most tool collections due to the versatile nature of them.This spanner provides the user with increased grip and torque when turning fasteners. Some have one head, and some have dual heads ranging in size as well as the tool length. The longer the tool, the bigger the head to give the user more leverage for undoing stubborn fasteners and allowing greater torque application.<h3>Advantages of open-ended spanners</h3><ul><li>They can be used on most types of fasteners with a secure fit and reduced instances of rounding</li><li>Versatile and can be used across a wide range of applications</li><li>The spanners come in different sizes to suit your needs</li><li>Ideal when working in confined spaces</li></ul>

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Ratchet Spanners | RS

A ratchet spanner or wrench uses a mechanism which allows an open-ended, flare or ring head to turn a fastener in one direction but not the other while remaining fitted to the fastener head. By turning the spanner over or flicking a lever, it changes the direction of movement. They are an essential tool in any toolbox as it can tighten and loosen a nut or bolt, and by applying the correct amount of torque to the fastening, it can save time and effort. Some manufacturers choose to etch the arrows of the torque direction near the lever, making it easier for the user to identify the direction to tighten or loosen in. Ratchet spanners are available in a variety of metric and imperial sizes<h2>Common ratchet spanner head types:</h2><ul><li>Ring Head: The most frequently used type of ratchet head. They are especially useful as they apply force to all sides of the fastener, offering additional grip to avoid coming off the nut or bolt whilst the tool is in use.</li><li>Reversible: The simple reversing mechanism allows to user to adjust the direction of the ratchet simply by moving the lever across on the tool.</li><li>Flare Nut Spanner: Also known as a 'crow's foot' spanner or a 'brake nut' spanner, it provides contact at six points on the fastener, allowing a secure grip.</li><li>Open Ended Spanner: An essential spanner for any tool box, it can also come with a ratchet mechanism meaning this versatile tool can be used across various settings.</li><li>Open Ended Ratchet: This ratchet has an altered profile which can catch the fastening in one direction to apply the torque to loosen or tighten it. It can only move in one direction and can be turned over to change the direction of the torque application.</li></ul>

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Ring Spanners | RS

Ring spanners are hand tools used for tightening and loosening nuts or bolt heads with a hexagonal shape. They are typically made from hardened chrome vanadium steel or beryllium copper and typically comprise of a ring on one end and an open jaw on the other. Our Includes leading brands such as; Bahco, Eg-Master, Facom, Gear Wrench, Gedore, Stahwille & RS PRO<h2>Types of Ring Spanners</h2>The ring end recess is generally a six-point or twelve-point opening and sometimes offers a ratchet mechanism that helps apply maximum force with minimal user effort. Ring spanners are available in most metric (mm) and imperial (inch) sizes to allow for greater functionality across a wider range of applications. <h2>How do ring spanners work? </h2>Ring spanners rely upon the physical strengths of the user to deliver accurate force when attaching the recessed head to the fastener and rotating clockwise or anti-clockwise. Depending on the material they are made from, they can often withstand large amounts of torque being applied to stubborn fasteners.<h2>Popular ring spanners</h2>Ratchet End / Open-End - these consist of a ratchet ring spanner at one end and a standard open end at the other. Height Safe spanner - have a ring hook attached to the handle that can be securely attached to a wrist strap for working at heightNon-sparking spanner - ideal for use in potentially explosive environments such as Power stations, Paint Manufacturing, Oil Plants, Distilleries, Fire-fighting, Aerospace industry.

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Combination Spanners | RS

Combination spanners, also known as combi spanners, are hand tools used for tightening and loosening nuts or bolt heads with a hexagonal shape. They are typically made from hardened chrome vanadium steel or beryllium copper and typically comprise of a ring on one end and an open jaw on the other. The ring end recess is generally a six-point or twelve-point opening and sometimes offers a ratchet mechanism that helps apply maximum force with minimal user effort. Combination wrenches are available in most metric (mm) and imperial (inch) sizes to allow for greater functionality across a wider range of applications. <h2>Popular combination spanners</h2><ul><li>Ratchet End / Open-End - Consists of a ratchet ring spanner at one end and a standard open end at the other.</li><li>Height Safe spanner - A ring hook is attached to the handle that can be securely attached to a wrist strap for working at height</li><li>Non-sparking spanner - Ideal for use in potentially explosive environments such as Power stations, Paint Manufacturing, Oil Plants, Distilleries, Fire-fighting, Aerospace industry.</li></ul><h2>Imperial Spanners</h2>Imperial spanners use the AF (Across Flats) system, where the measurement is taken between two parallel sides of the fastener. An inch spanner will fit an inch fastener. <h2>Metric Spanners</h2>Metric refers to the size of the thread rather than the size of the head of the fastener. Common sizes include M6, M8, M10 and M12. The M prefix is short for metric while the number indicates the width of the threaded section. For example, while there can be a few variations in millimetres, you would normally see a 10 mm spanner being used for an M6 fastener. <h2>Typical Application: </h2>Combi spanners are used by:<ul><li>Mechanics</li><li>Electricians</li><li>Network Engineers</li><li>DIY Enthusiasts</li></ul>

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Open Ended Slogging Spanners | RS

An open ended slogging spanner is a type of wrench or spanner that is used to apply torque to a square or hexagonal nut or bolt head. The unique design of an open ended slogging spanner allows it to be used in tight spaces and awkward angles with an impact wrench or hammer. An open ended slogging spanner is often used in heavy-duty industrial applications, and its large size and heavy-duty construction make it ideal for use in situations where a lot of torque is required.

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Ring Slogging Spanners | RS

A ring slogging spanner is a type of wrench or spanner that is used to apply torque to a square or hexagonal nut or bolt head. The unique design of a ring slogging spanner allows it to be used in tight spaces and awkward angles with an impact wrench or hammer. A ring slogging spanner is often used in heavy-duty industrial applications, and its large size and heavy-duty construction make it ideal for use in situations where a lot of torque is required.

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Slogging Spanners | RS

A slogging spanner is a type of wrench or spanner that is used to apply torque to a square or hexagonal nut or bolt head. The unique design of the slogging spanner allows it to be used in tight spaces and awkward angles with an impact wrench or hammer. A slogging spanner is often used in heavy-duty industrial applications, and its large size and heavy-duty construction make it ideal for use in situations where a lot of torque is required. Slogging spanners are single ended with either a ring or open end.

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Flare Nut Spanners | RS

A flare nut spanner is a specialially designed tool that is used for gripping and turning fittings on soft metal tubing. The spanner itself has a special-shaped tapered jaw which fits around the corners of a flare nut and holds it firmly. Flare nut spanners are ideal for use in plumbing and vehicle brake pipe applications.

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Flex Head Ratchet Spanners | RS

Flex head ratchet spanners offer the same benefits as a ratchet spanner however, the flexible head feature allows for extra movement and access to hard-to-reach fastenings

Ratcheting ring spanners for quick and precise tightening. Smooth gear mechanism for seamless operation. Enhance your productivity with these reliable tools. Buy now at RS.

Ratcheting Ring Spanners | RS

A ratcheting ring spanner, also known as a ratcheting box-end wrench, is a specialized hand tool used for tightening or loosening fasteners such as nuts and bolts. It features a ring-shaped end with teeth or gears inside, allowing for ratcheting action. This means that the spanner can be moved back and forth on the fastener without needing to lift and reposition it after each turn. The ratcheting mechanism saves time and effort by enabling continuous rotation in one direction while maintaining contact with the fastener. Ratcheting ring spanners are commonly used in automotive, mechanical, and plumbing applications where accessibility is limited or repetitive motion is required.

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Half Moon Ring Spanners | RS

A half moon ring spanner, also known as a half-moon wrench or offset ring spanner, is a specialized hand tool designed for accessing and turning fasteners in tight or hard-to-reach spaces. It gets its name from its unique shape, resembling a half moon or crescent.The half moon ring spanner features a curved or angled ring-shaped end on one or both sides, allowing it to reach fasteners that a straight spanner or socket wrench cannot access directly. The curved design provides additional clearance and allows the spanner to be used at an angle, accommodating obstacles such as pipes, protruding parts, or other obstructions.This type of spanner is commonly used in automotive, plumbing, and machinery applications, particularly when working on engines, piping systems, or machinery components located in cramped spaces. The half moon ring spanner's design enables technicians and mechanics to tighten or loosen fasteners effectively in confined areas where a regular spanner may not fit or operate comfortably.

Effortlessly tackle tight spots with angled socket spanners. Reach inaccessible fasteners with precision and ease. Versatile tool for confined spaces. Shop now at RS.

Angled Socket Spanners | RS

An angled socket spanner, also known as an angled socket wrench or angled ratchet wrench, is a specialized hand tool used for tightening or loosening fasteners in confined or hard-to-reach areas. It is designed with a built-in angle or bend in the handle, which allows the socket end to be positioned at an angle relative to the handle.This tool is particularly useful when working in tight spaces where a straight socket wrench or other conventional tools cannot be easily maneuvered. The angled design allows the user to access fasteners that are obstructed by obstacles or limited in vertical or horizontal clearance.Angled socket spanners are commonly used in automotive, machinery, and equipment maintenance, where access to bolts, nuts, or other fasteners may be challenging due to cramped engine compartments, complex machinery arrangements, or tight corners. They offer improved reach and flexibility, making them a valuable addition to any toolkit in situations that require working at angles or in confined spaces.

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7 mm Spanners | RS

7 mm spanners, also known as 7 mm wrenches, are hand tools used for tightening or loosening fasteners with a hexagonal or square-shaped head measuring 7 mm across. They typically have an open-end or a box-end configuration.Open-end spanners have U-shaped jaws at each end, with one jaw accommodating the 7 mm fastener size. They provide a fixed grip on the fastener and are convenient for quick adjustments in tight spaces.Box-end spanners, also known as combination spanners, have a closed-loop design with a 6-point or 12-point box-end on one or both ends. The box-end ensures a secure grip on the fastener, reducing the risk of rounding off the corners. Combination spanners often have a different size on each end, providing versatility for working with different fasteners.7 mm spanners are commonly used in a variety of applications, such as automotive repairs, machinery maintenance, furniture assembly, and electrical work, where fasteners of this specific size are prevalent. They are compact, lightweight, and easy to handle, making them a valuable tool in many DIY projects and professional settings.

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50 mm Spanners | RS

50 mm spanners, also known as 50 mm wrenches, are hand tools used for tightening or loosening fasteners with a hexagonal or square-shaped head measuring 50 mm across. They are designed to handle larger fasteners that require significant torque or force.50 mm spanners are typically available in two main types: open-end spanners and combination spanners.Open-end spanners have U-shaped jaws at each end, with one jaw accommodating the 50 mm fastener size. They provide a fixed grip on the fastener and are suitable for quick adjustments in tight spaces.Combination spanners, also known as box-end spanners, have a closed-loop design with a 6-point or 12-point box-end on one or both ends. The box-end ensures a secure grip on the fastener, reducing the risk of rounding off the corners. Combination spanners often have a different size on each end, providing versatility for working with various fasteners.50 mm spanners are commonly used in heavy-duty industrial applications, construction projects, and machinery maintenance tasks, where large-sized fasteners are prevalent. They are sturdy, durable, and capable of applying significant torque to handle demanding tasks.

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Bahco Spanners | RS

Bahco Spanners are a range of high-quality hand tools produced by Bahco, a well-known brand in the tool industry. Bahco Spanners are known for their precision, durability, and ergonomic design. They are commonly used for tightening or loosening fasteners in various applications, including automotive repairs, industrial maintenance, construction projects, and more.Bahco Spanners come in different types and sizes, such as combination spanners, open-end spanners, adjustable spanners, ratcheting spanners, and more. They are crafted from high-quality materials, such as chrome vanadium steel, to ensure strength and longevity.What sets Bahco Spanners apart is their focus on user comfort and efficiency. Many models feature innovative designs, such as slim profiles, anti-slip handles, and optimized jaw geometry, allowing for improved grip, easier access to tight spaces, and enhanced torque transmission.Bahco has a reputation for manufacturing reliable and professional-grade tools, and their range of spanners is no exception. Whether for professional tradespeople or DIY enthusiasts, Bahco Spanners are trusted for their performance, durability, and ergonomic features, making them a preferred choice for many tool users.

Facom spanners: Trusted by professionals for superior performance. Precision-engineered, durable, and ergonomic designs. Elevate your tool collection today at RS.

Facom Spanners | RS

Facom spanners are designed to provide precision, durability, and efficiency in fastening operations. They are available in different types, including combination spanners, open-end spanners, ratcheting spanners, adjustable spanners, and more. These spanners are crafted from premium materials, such as chrome-vanadium steel, ensuring strength and longevity.What sets Facom spanners apart is their focus on professional-grade performance. They undergo rigorous testing and quality control to meet the demanding requirements of industries like automotive, aerospace, manufacturing, and maintenance. Facom spanners feature innovative designs, optimized jaw geometry, and ergonomic handles to enhance grip, torque transmission, and user comfort.Professionals worldwide trust Facom spanners for their reliability, durability, and precision. Whether used in industrial settings or by DIY enthusiasts who value high-performance tools, Facom spanners are recognized for their craftsmanship and ability to tackle challenging fastening tasks effectively.

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GEDORE Spanners | RS

GEDORE is a trusted name in the world of hand tools, and when it comes to spanners, their reputation shines brightly. With a history spanning over a century, GEDORE has consistently delivered top-quality spanners that are the backbone of countless industries and projects.Crafted with precision and built to last, GEDORE spanners are the embodiment of durability and reliability. Whether you're a professional tradesperson or a dedicated DIY enthusiast, these spanners are your steadfast companions, designed to tackle a wide range of tasks. From automotive maintenance to industrial assembly, GEDORE spanners offer the perfect balance of strength and precision, ensuring that your work is carried out efficiently and with the utmost accuracy.What sets GEDORE spanners apart is their commitment to excellence in design and engineering. Each spanner is meticulously crafted, meeting the highest industry standards, and subjected to rigorous quality control to guarantee performance and longevity. The ergonomic design ensures a comfortable grip, minimizing hand fatigue during extended use. When it's time to choose the perfect spanner for your needs, remember that GEDORE is the name trusted by professionals who demand the best. With GEDORE, you're not just holding a spanner; you're holding a tool of unmatched quality and craftsmanship that will stand the test of time.

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Wera Spanners | RS

Wera Spanners, known for their exceptional craftsmanship and innovative design, have long been a symbol of quality and reliability in the world of tools. With a rich heritage dating back decades, these spanners epitomize precision and durability. Crafted with the finest materials and cutting-edge technology, Wera Spanners are the go-to choice for professionals and enthusiasts alike.Their ergonomic design ensures that you can work comfortably and efficiently, reducing fatigue during those lengthy tasks. The precise fit and finish of Wera Spanners make them a trusted companion for a wide range of applications. From tightening bolts to tackling complex mechanical projects, Wera spanners deliver on their promise of performance and longevity.When it comes to tools that embody engineering excellence, Wera Spanners stand out, providing you with the means to tackle any job with confidence.

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Wera Joker Spanners | RS

Embark on a journey of precision with Wera Joker Spanners – an advanced tool meticulously designed to enhance your tightening and loosening endeavours. Seamlessly blending versatility with efficiency, these spanners set a new standard for performance and reliability.Boasting a distinctive double-hex geometry, the Wera Joker Spanners ensure a secure grip on fasteners, eliminating the risk of slippage and enabling accurate torque application. The integrated holding function adds a layer of convenience by firmly grasping nuts and bolts, allowing for effortless positioning and single-handed operation. Refined with a ratcheting mechanism, these spanners expedite repetitive tasks, enhancing your overall productivity.Crafted from top-tier materials, Wera Joker Spanners guarantee resilience and enduring performance, making them a reliable companion for professional use. The clearly marked sizes on each spanner contribute to easy identification, simplifying your work process.Step into a new era of precision and reliability with Wera Joker Spanners – where innovation meets the exacting demands of your tightening needs.

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