Hex Keys

A hex key, also known as an Allen key, Allen wrench, or hex wrench, is an indispensable tool for manipulating fasteners with a hexagonal socket. Its simple, six-sided tip is designed to fit precisely into the head of a hex Allen key screw or bolt, providing excellent torque and preventing slippage.

Available in various forms and sizes, the hex key tool is a fundamental piece of equipment in many industries, from furniture assembly to machinery maintenance, thanks to its reliability and ease of use.

Find out more in our hex keys guide.

Types of Hex Key Tools

Understanding the different types of hex key tools is crucial for selecting the right one for your specific application. Each design offers unique advantages in terms of accessibility, ergonomics, and ease of use.

L-Shaped Hex Key

L Shaped hex keys or L keys are the most common and traditional form of hex key, characterised by its simple 'L' shape with hexagonal tips at both ends. This design provides a good balance of torque and reach. The short arm is used for high torque applications, while the long arm is ideal for reaching fasteners in confined spaces or for faster screw insertion and removal.

T-Shaped Hex Key

A T-shaped hex key features a handle perpendicular to the shaft, which enhances grip and comfort. This design allows for higher torque compared to the standard L-shape and is often preferred for tasks requiring repetitive use, reducing user fatigue. Some T-handle designs also incorporate a spinning grip for quick turning.

Ball End Hex Key

A ball end hex key has a rounded tip on one end, allowing it to be inserted into a screw head at an angle (up to 25 degrees). This makes it highly effective for reaching fasteners in tight or obstructed areas where a straight approach is not possible. While it provides less torque than a standard hex end, its flexibility is a significant advantage in many applications.

Folding Hex Key Sets

Also known as a hex key set or Allen key set, this type consists of multiple hex keys of varying sizes folded into a single handle, similar to a pocket knife. The compact and portable nature of folding hex key sets makes them ideal for on-the-go maintenance and repair tasks, ensuring you always have the right size on hand.

Sizes and Materials

Hex keys are available in both metric sizes (commonly from 1.5mm to 10mm) and imperial sizes (fractional inches from 1/16" to 3/8"). They are typically sold individually or in sets that include the most popular sizes for different applications. Quality hex keys are often made from durable materials such as chrome vanadium steel or stainless steel, providing strength and corrosion resistance suitable for professional and DIY use.

Applications of Allen Key Tools

The versatility of the hex key tool makes it an essential component in a vast range of industries and tasks requiring secure fastening.

Product Assembly

Hex keys are widely used for assembling flat-pack furniture, machinery, and electronic devices. The simple yet effective design ensures screws are tightened securely, preventing wobble and ensuring the structural integrity of the final product.

Bike Repair

In the cycling world, the Allen key tool is indispensable for adjusting and maintaining bicycle components. From adjusting handlebars and saddles to tightening brake levers and derailleurs, it's the go-to tool for cyclists and bike mechanics.

Automotive

Automotive technicians and enthusiasts rely on hex keys for a variety of tasks, including engine repairs and interior component installation. They are frequently used on car parts that require precise and strong fastening, such as certain bolts in engine compartments and trim pieces.

Construction Projects

On construction sites, the hex key is used for tasks like installing fixtures, assembling scaffolding, and securing structural components. The robustness of hex wrench fasteners makes them a preferred choice for applications where high strength and stability are required.

Plumbing

In plumbing, Allen key tools are used to work on fixtures and faucets, particularly those with concealed fasteners. The compact size of the hex Allen key allows plumbers to access hard-to-reach screws, ensuring a tight seal and preventing leaks.

Selecting the Right Hex Key

• Always choose a hex key or hex wrench that matches the size of the fastener's hexagonal socket to prevent stripping or damaging the screw head and to ensure efficient torque application.
• Consider whether you need metric or imperial (SAE) sizes based on the fasteners you use most. Metric sizes are more common internationally, while imperial is primarily used in certain countries like the US.
• Opt for hex keys made out of high-quality materials such as chrome vanadium steel for durability and corrosion resistance, which contributes to the tool’s longevity and reliable performance.
• Select the right hex key shape that makes it easier to apply torque. L-shaped for versatility, T-shaped for higher torque and ergonomic grip, and ball end for angled access in tight spaces.
• When purchasing hex key or Allen key sets, ensure they include a range of popular sizes (e.g., 1.5mm to 10mm in metric or 1/16" to 3/8" in imperial) to cover common fastening tasks.
• Use ergonomic or folding hex key sets for ease of handling and portability, especially for maintenance or repair work on the go.

Trusted Supplier and Distributor of Hex Key Tools in Singapore

As a trusted supplier and distributor, RS Singapore offers a comprehensive range of hex key and Allen wrench solutions to meet the diverse needs of professionals across various industries. Our extensive catalogue features a wide selection of hex keys in all shapes and sizes, ensuring you can find the perfect fit for any application.

We partner with industry-leading brands known for their quality and durability, including BETA, SAM, and Facom, providing you with tools you can rely on. In addition to our broad range of hex keys and Allen key sets, we also stock essential complementary products such as hex bolts and hex socket sets, making RS your single source for a complete technical solution in Singapore.

Simply place your order online and enjoy fast delivery. For complete details on our delivery option and fees, please visit our delivery page.