Best Metric Box Spanners of 2025

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Metric Box Spanners are versatile and durable tools used to tighten or loosen nuts and bolts in confined spaces. Made from high-quality materials, these spanners come in a range of sizes and are compatible with metric measurements. They are designed to fit over the nut or bolt, offering a secure grip and reducing the risk of slipping. Metric Box Spanners are an essential addition to any toolbox, providing a reliable solution for plumbing, automotive, and DIY tasks. With their compact design, these spanners are easy to store and transport, making them a convenient tool for on-the-go repairs.
At a Glance: Our Top Picks
Top 10 Metric Box Spanners
Silverline 589709 6-Piece Metric Box Spanner Set
The Silverline 589709 Box Spanner is a versatile tool set that includes double-ended spanners in sizes ranging from 8 mm to 19 mm. This feature allows you to tackle various nuts and bolts with ease, providing convenience for both DIY enthusiasts and professionals. The inclusion of a TMMY bar further enhances your ability to apply torque effectively, making your tasks simpler. With six different sizes, you can easily find the right fit for your needs, ensuring you can work efficiently without searching for the right tool.
Hilka 17900802 Metric Box Spanner Set
The Hilka Box Spanner Set is an 8-piece metric collection designed to provide versatility and convenience for various tasks. Each spanner is made from durable zinc plates, ensuring longevity and reliability. The set includes sizes ranging from 6 x 7mm to 20 x 22mm, allowing you to tackle a wide array of fittings and fasteners. With its compact design, this set is easy to store and transport, making it an essential addition to your toolkit for home or professional use.
EasyShopping247® UK Monoblock Tap Spanner Set
The EasyShopping247® Tap Spanner Set is designed for versatility and ease of use. It fits nearly all monoblock bolts, making it ideal for securing taps effectively. The double-ended spanners come in sizes 8/9 mm, 10/11 mm, and 12/13 mm, ensuring you have the right tool for different nut sizes. Its corrosion-resistant steel construction guarantees durability, while the included tommy bar allows you to access restricted areas effortlessly. This set is perfect for both DIY enthusiasts and professionals alike.
VORX Boltwork Box Spanner Set 8pc
The VORX Box Spanner Set is expertly manufactured from heavy gauge steel, ensuring durability and reliability for various tasks. With a comprehensive range of metric sizes from 6x7 mm to 20x22 mm, this set is ideal for plumbing and car mechanics, providing you with the right tool for every job. The zinc-plated finish offers excellent corrosion protection, extending the life of your tools. Additionally, the set comes in a heavy storage wallet, making it convenient for professional mechanics and DIY enthusiasts to keep tools organised and easily accessible.
Unibos 8pc Tubular Box Spanner Set
The Unibos Box Spanner Set is crafted from durable chrome vanadium with zinc plating, ensuring long-lasting performance even in tough conditions. This set includes metric sizes ranging from 6x7mm to 20x22mm, allowing you to tackle a variety of nuts and bolts with ease. Designed for deep reach, these spanners are perfect for accessing recessed nuts in tight spaces, making your work more efficient. With a chrome-plated finish, they resist corrosion, maintaining a sleek appearance throughout their use.
Draper 28967 Metric Tubular Box Spanner Set
The Draper Box Spanner Set is a practical tool collection, ideal for various tightening tasks. Manufactured from high-quality carbon steel, these spanners ensure durability and strength, making them perfect for heavy-duty use. The zinc plating offers excellent corrosion protection, which means you can rely on them for years without worrying about rust. Additionally, the set includes two tommy bars, measuring 100mm and 150mm long, allowing you to apply more torque efficiently. This combination of features provides convenience and versatility for your DIY projects or professional needs.
Gunpla 10-Piece Heavy Duty Box Spanner Set
The Gunpla Box Spanner Set features heavy-duty gauge steel spanners that are built to last, ensuring durability for years of use. Their double-ended design provides versatility, allowing you to tackle various tasks with ease. This metric set includes a range of sizes, making it ideal for most plumbing jobs. Additionally, it comes with practical tommy bars, enabling you to operate in tight spaces where traditional spanners may not fit. Overall, this set offers convenience and efficiency for any plumbing project.
DAKCOS 4PCS Metric Box Spanner Set
The DAKCOS Box Spanner Set is a versatile tool designed for ease of use. With double-ended sizes ranging from 8-13mm, you can easily tackle various nuts and bolts. The durable zinc-plated surface ensures corrosion resistance, prolonging the life of your tools. Equipped with 120mm tommy bars, this set makes your work more convenient and reduces the effort needed for loosening or tightening. It is particularly useful for plumbing tasks, as it fits perfectly in narrow recesses, allowing for effective installation and maintenance of pipes and faucets.
Silverline Box Spanner Metric Set 8-22 mm
The Silverline Box Spanner Set is designed for convenience and durability. Made from corrosion-resistant steel, you can trust this set to endure tough conditions without rusting. The matt finish provides excellent grip, ensuring you can work confidently without slipping. This set includes various spanner sizes, allowing you to tackle a range of tasks with ease. Additionally, it features a 14 mm spark plug spanner, making it perfect for automotive work and ensuring you have the right tool for the job.
DURATECH 9-Piece Offset Double Ring Spanner Set
The DURATECH Offset Spanner Set is crafted from heat-treated Chrome Vanadium Steel, ensuring exceptional durability and corrosion resistance. Its unique 75-degree offset design allows you to easily access fasteners in tight spaces, making your tasks more manageable. With a comprehensive 9-piece selection ranging from 6mm to 23mm, you have the right tool for various jobs. Additionally, the included roll pouch keeps everything organised and provides easy storage, helping you maintain a tidy workspace.
Frequently Asked Questions (FAQs)
1. What size is a box spanner?
To select the correct box spanner for your needs you will need to know the size of the nut you want to turn. Nearly all backnuts are 1/2 or 3/4 inch. Their AF (across flats) measurements are typically 27mm and 32mm.
2. What can you use instead of a box spanner?
Zip-tie. These wonderful little toolbox accessories aren't just used to tidy up cables and attach hubcaps, they can also be used in place of a spanner. Place the zip-tie around the nut as tightly as possible and using the tail of the zip-tie pull in the direction necessary to loosen or tighten the nut.
3. What are box spanners used for?
Box Spanners Commonly made of steel tube, the box spanner is typically used for removing spark plugs. They normally feature a six-sided ring-type head that fits the nut that has been pressed out of the steel tube during the manufacturing process. They are turned using a T-bar passed through the two holes in the middle.
4. What are the 4 basic types of spanners?
Following are the different types of spanners:. Open-end or single-end spanner.Double-ended spanner.Ring spanner.Socket spanner.Box spanner.Combination spanner.Hook spanner.Adjustable spanner.
During our metric box spanner research, we found 76 metric box spanner products and shortlisted 10 quality products. We collected and analyzed 35,957 customer reviews through our big data system to write the metric box spanners list. We found that most customers choose metric box spanners with an average price of £12.03.
The metric box spanners are available for purchase. We have researched hundreds of brands and picked the top brands of metric box spanners, including Silverline, Hilka, EasyShopping247, VORX, Unibos. The seller of top 1 product has received honest feedback from 882 consumers with an average rating of 4.7.

Jennifer Fraser is a licensed contractor specializing in sales, maintenance, and kitchen, bathroom, and home appliances, tools, and utilities. She owns a store in Leeds where you can get any home and tool appliance. Jenny has a degree in literature, but she combines her knowledge and experience with her degree to publish DIY articles on solving home appliances issues to keep up the family enterprise.