14 Different Types of Spanners and Their Uses with pictures

Published: 25 Nov 2025

In this article, we will discuss the types of spanners and their uses. Spanners, also known as wrenches in some countries, are essential hand tools used to tighten or loosen nuts and bolts. From automotive repairs to plumbing and industrial maintenance, spanners play a vital role in various tasks. Let’s explore the different types of spanners and their applications.

What is Spanner?

A spanner is a hand tool designed to provide grip and mechanical advantage when tightening or loosening nuts and bolts. They come in various shapes and sizes, each designed for specific applications, allowing users to apply precise torque and ensure secure fastening. High-quality spanners are typically made from chromium-vanadium steel, drop-forged for durability, and chrome-plated to resist corrosion. Spanners are essential for a wide range of tasks, including automotive repairs, machinery maintenance, plumbing, and construction work.

Types of Spanners and Their Uses

Here are some common types of spanners and their uses in everyday tasks and professional work.

1. Combination Spanner

A combination spanner features an open-end on one side and a ring-end on the other, usually of the same size. This dual design allows it to serve two purposes in a single tool. The open-end is useful for quick adjustments, while the ring-end provides a firm grip to apply more torque. Combination spanners are widely used in mechanical work, automotive repairs, and general maintenance. They are versatile, convenient, and often the most common spanners in any toolkit.

2. Open-End or Single-End Spanner

Open-end spanners have a U-shaped jaw at one end, designed to grip nuts and bolts from parallel sides. They are simple yet highly effective at loosening or tightening fasteners where full rotation is not possible. Open-end spanners are particularly useful in home repair tasks and basic mechanical jobs. They are available in various sizes to match different fastener dimensions. Their ease of use makes them ideal for quick and straightforward applications.

3. Double-Ended Spanner

Double-ended spanners have open jaws on both ends, typically of different sizes. Each end is usually angled 15–30° to improve accessibility in tight spaces. This design allows the user to work on two sizes of fasteners without switching tools. They are commonly used in automotive, mechanical, and maintenance tasks. The versatility of double-ended spanners makes them an essential tool for mechanics and engineers alike.

4. Ring Spanner

Ring spanners feature circular, ring-shaped heads on one or both ends that securely grip nuts and bolts. The internal teeth of the ring ensure a non-slip hold, providing stability while tightening or loosening fasteners. Many ring spanners are angled to allow access in confined spaces. They are ideal for precision work in automotive and industrial applications. Their ability to grip all sides of a fastener makes them safer and more effective than open-ended spanners in many situations.

5. Tubular Box Spanner

Tubular box spanners have a long tubular body with multiple holes to fit different fasteners. They are often used with a Tommy bar for added leverage and torque. These spanners are perfect for reaching nuts and bolts in recessed or hard-access areas. They are frequently employed in plumbing, automotive, and machinery maintenance. Their design allows for smooth operation in spaces where conventional spanners cannot reach.

6. Socket Spanner

Socket spanners are cylindrical tools with a square opening for a Tommy bar and external grooves for different-sized nuts. They are highly effective in tight spaces where traditional spanners may not fit. Socket spanners are often used with torque wrenches to apply precise force. They are common in automotive and industrial assembly tasks. The versatility of socket spanners makes them essential for working on engines, machinery, and complex equipment.

7. Ratchet Spanner

Ratchet spanners feature a ratcheting mechanism that allows continuous rotation in one direction without repositioning. This makes them extremely useful for repetitive fastening or loosening tasks. They save time and reduce hand fatigue compared to standard spanners. Ratchet spanners are ideal for automotive, mechanical, and industrial applications. Their precision and convenience make them a preferred choice for professionals and DIY enthusiasts alike.

8. Gas Spanner

Gas spanners are designed to tighten and loosen nuts and bolts in gas piping systems. They usually feature an adjustable head to accommodate various fastener sizes. Gas spanners are widely used by plumbers and gas fitters during installation and maintenance. They provide a secure grip while ensuring safety during work. Their specialized design makes them essential for working in gas-related applications.

9. Torx Wrench Spanner

Torx wrench spanners have a star-shaped head designed specifically for Torx screws. This design reduces slippage and ensures a tight fit. They are frequently used in electronics, automotive, and industrial assembly work. Torx wrenches allow precise torque application for delicate or high-precision tasks. They are essential for engineers, technicians, and DIY projects requiring accuracy.

10. T Socket Spanner

T socket spanners feature a T-shaped handle with a socket at the end for deep or recessed fasteners. They allow better control and torque when working in confined spaces. T socket spanners are commonly used in automotive engines and electrical equipment. The handle provides comfort during extended use. They are a practical solution for hard-to-reach bolts and nuts.

11. Hook Spanner

Hook spanners are designed for nuts without external faces or peripheral holes. The tool’s pin fits into a designated hole in the nut, allowing rotation. They are used in specialized industrial machinery and maintenance work. Hook spanners provide a secure grip where conventional spanners fail. Their unique design makes them valuable for specific engineering applications.

12. Adjustable Spanner

Adjustable spanners have jaws that can be widened or narrowed to fit different fasteners. This versatility reduces the need for multiple spanners of different sizes. They are used in mechanical work, plumbing, and general maintenance. Although they may not lock tightly every time, they are highly practical in many situations. Adjustable spanners are a must-have in any toolbox for convenience.

13. Magneto Spanner

Magneto spanners are compact, single-ended spanners bundled together for quick access. They are used for small nuts and bolts in electrical or mechanical applications. Their small size allows them to fit in tight spaces where larger spanners cannot. They are common in workshops, garages, and industrial maintenance. Magneto spanners are ideal for precision work requiring multiple small fasteners.

14. Pin Face Adjustable Spanner

Pin face adjustable spanners consist of two legs connected by a rivet with pins at each end. The pins fit into holes in round nuts, allowing secure rotation. The spacing between the legs can be adjusted to fit different nut sizes. These spanners are commonly used in industrial maintenance and pipe fittings. Their design allows them to handle fasteners that other spanners cannot manage.

Conclusion

In conclusion, in this article, we have covered the types of spanners and their uses in detail. From adjustable spanners to ratchet and Torx wrenches, each tool has its unique function. We hope you have learned something helpful about choosing the right spanner for your tasks.