Types of Spanners and their uses

various kinds of Spanners are used to tighten or loosen various jobs more than any other instrument. These are usually composed of carbon steel or drop-forge steel. These are created in a variety of forms and sizes to meet the needs of the customer. Screwdrivers can also be used to tighten and loosen any task or screw.

To remove or tighten a given size nut or bolt, various spanners are employed. All spanners are measured in millimeters and inches. Millimeter spanners come in a variety of sizes. 7mm spanners, like inch spanners, come in 1/16 and double-ended versions, while ring spanners come in sets of 6, 8, 12, and 36. The double-ended and ring spanners are available in the following sizes in a set of 6-inch spanners. 1 X 15/16 inch, 7/16 X 13/16 inch, 3/4 X 11/6 inch, 5/8 X 19/32 inch, 1/2 X 9/16 inch and 3/8 X 7/16 inch.

In this article, you’ll learn the various types of spanners and their uses.

Types of Spanner

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Types of spanners

The common types of spanners are open-end or single-end spanners, double-end spanners, ring spanners, socket spanners, box spanners, combination spanners, hook spanners, adjustable spanners, and T socket spanners, Magneto spanners, Allen key, and pin face adjustable spanner.

Open-end or single-end spanner

Only one end of these kinds of spanners is open, and the nut or bolt head is held to loosen or tighten it. A single-end spanner is another name for it. The gap between their jaws determines their size. As a result, the spanner is chosen based on the distance between the opposing surfaces of the nut or bolt.

open end spanner

Double-ended spanner

Open ends are constructed on both ends of these spanners to hold nuts or bolt heads in place. These two ends are angled from the in-between body at 15 to 30 degrees. These are the most often used spanners.


Ring spanner

These kinds of spanners have spherical rings on one or both ends to drip nuts and bolts in order to tighten or loosen them. These rings are bent backward in relation to one another. Projected teeth are integrated into these rings, allowing six-sided nut bolts to be readily grabbed. It does not slip since it grabs all surfaces. Some ring spanners don’t have their ends bent.

Ring spanner set

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Socket spanner

The shape of these spanners is that of a round socket. A square hole is drilled into one end of this type of spanner. On the other hand, like a ring spanner, grooves are carved outside in nut-bolt size. The Tommy bar, which has a square shape, is fastened in the square hole. These spanners are used when e ring spanners cannot be utilized due to a lack of room. Apart from that, socket spanners are also used to tighten nut bolts after measuring their torque with a torque wrench.

In the shape of sets, these are available in small and large sizes. Along with these spanners, you’ll need a Tommy bar, Universal Tommy, and Ratchet Tommy. Nut bolts in slanting, straight, or congested spaces can be tightened or loosened with their assistance.

Socket Spanner Wrench on White Background

Box spanner

Pipes, thick or thin, are used to construct them. The ends of this spanner’s six sides are created on one or both ends, allowing nut bolts with six phases to be readily handled. On one or both ends of the rod, holes are drilled into which a rod can be inserted and utilized as a handle. It’s employed in places where there’s a lot of room.

box spanner

Combination spanner

An open-end spanner is made on one end, while a ring spanner is made on the other end. The spanners are identical in size on both ends.

combination spanner tools

Hook spanner

These types of spanners are designed for nuts that do not have holes around the perimeter. These nuts don’t have any faces on them. As a result, the spanner’s pin becomes lodged in the hole and performs the function of rotating it to open or tighten it.


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Adjustable spanner

These are specialized spanners, also referred to as screw wrenches. To tighten or loosen the nut bolts, its jaws can be stretched or shortened. They’re used for nuts that no other spanner will fit.

adjustable spanners

“T” Socket spanner

These spanners are almost identical to box spanners, but they have a fixed hand on top and a socket integrated into the bottom. These sockets come in a variety of sizes. They’re used in places where there is deep space.

T socket

Magneto spanner

It’s a collection of little single-end spanners. To tighten or open small nut bolts, a group of spanners of various sizes is connected together.

magneto spanner

Allen key

These are thin steel rods with six faces bent at an angle of 90 degrees from one end. On the upper side, they have a six-faced hole. Tightening is accomplished with these bolts while maintaining the job’s surface level. These are available in a variety of sizes and quantities.

Allen key

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Pin face adjustable spanner

This spanner is produced by riveting two legs together. Each leg has a pin attached to the end of it. It’s used on round nuts with holes in the periphery for the spanner pin to go through. To utilize it on a variety of nuts, the space between its legs can be increased or decreased.

Pin face adjustable spanner

That is all for this article, where the common types of spanners are been discussed. I hope you learn a lot from the reading, if so, kindly share with other students. Thanks for reading, see you around!