RS PRO T Shape Metric Hex Key, 4mm

Introducing the range of RS PRO T-Handle Hex Keys. Designed with high-quality Silicon Chrome Vanadium steel, this hex key offers a dual-function long arm and short arm, dependant on the application it is required for and can withstand high torque transmission from the user, especially when being used on stubborn fasteners. This hex key is especially useful when working in tight spots with little space for movement because a higher amount of torque can be applied to the fastener without the risk of it rounding. The ergonomically designed bi-material handle offers superior comfort and lessens the fatigue for the user when working for extended periods of time, making this an ideal hand tool for professional and DIY users across a wide range of applications.

• This high-quality short arm hex key is suitable for use across a wide range of applications that require a hex fastener
• Ergonomically designed dual-function handle that allows greater torque application and greater access in enclosed spaces
• Soft grip bi-material handle for optimum comfort and reduced user fatigue
• Made from high-quality Silicon Chrome Vanadium steel for increased durability and strength
• Matt chrome finish for greater corrosion resistance against harsh working environments
• Ideal hand tool for mechanics, engineers and DIY enthusiasts
• Hex keys available in a wide range of metric sizes

Hex keys or Allen keys are most commonly used to tighten or loosen hex fasteners used in a variety of different applications. Hex fasteners are well known for having a 6-sided blade that helps prevent ’cam-out’ or slipping and rounding the fastener, and as a rule, higher torque can be applied to these types of fasteners. With this in mind, it is essential for hex keys to be able to withstand the amount of torque being applied by being more durable and stronger to ensure that it can loosen even the most stubborn fasteners or tighten up to the required torque spec. These keys are most commonly used by:

• Automotive mechanics
• Engineers
• Production and manufacturing operatives
• DIY enthusiasts

The RS PRO range of hex keys are available in the following sizes:

192-3642 T-Handle Hex Key 2 mm
192-3643 T-Handle Hex Key 2.5 mm
192-3644 T-Handle Hex Key 3 mm
192-3645 T-Handle Hex Key 4 mm
192-3646 T-Handle Hex Key 5 mm
192-3647 T-Handle Hex Key 6 mm

The main difference between Hex keys and Torx keys is that Hex keys have 6 sides and are shaped hexagonally, hence their name. Torx keys are generally star-shaped with the benefit of adding greater contact points for the fastener, hugely reducing the risk of rounding the fastener, which can be a common issue when applying a large amount of torque. Because of this, Torx keys are more expensive to produce and hex keys in comparison are cheaper and easier to manufacture, bringing the cost to the user down as well.

One of the benefits of using a short arm key is that with another hex key situated on the short end, it means that access in enclosed spaces is made much easier and more manageable, making it a versatile hand tool for a range of applications. Additionally, when comparing this hand tool to a screwdriver handle, much less user effort is required by using a T-handle key because a greater amount of torque can be applied in a comfortable way for the user when tightening or loosening the fastener.

RS PRO aims to be your go-to brand when you need quality, reliability and value for money. With all our parts subjected to rigorous testing by our in-house experts, we're confident we can supply you with the tools and parts you need for any purpose.

When it comes to tools, RS PRO is there to support you every step of the way, no matter how ambitious your project or installation.

Silicon Chrome Vanadium steel
Matt chrome finish
Soft grip handles made of PP/TPE