Hilti SID 2-A 12V Impact Driver Review

Hilti SID 2-A 12V Impact Driver Review

The Hilti SID 2-A 12V Impact Driver is one of the most popular types of impact gun available today. These guns are used in many different industries including construction, mining, oil & gas exploration, security guard protection and even law enforcement applications. They have been designed with durability and reliability in mind. A good quality impact gun will last for years to come without any problems or maintenance required!

The Hilti SID 2-A 12V Impact Gun is made from high strength plastic and features a solid metal barrel assembly. It comes equipped with a powerful motor which makes it capable of delivering massive amounts of force at close range. The gun uses two AA batteries (not included) which are easily accessible inside the gun’s body. There are several safety mechanisms built into the gun to prevent misuse or accidental discharge.

The Hilti SID 2-A 12V Impact Gun comes with a variety of accessories such as a carrying case, user manual and other useful items.

What Is An Impact Gun?

An impact gun is basically a weapon that creates high speed impacts using compressed air. The name “impact” refers to the fact that these weapons create very large forces when they hit something. They are also called air guns or nail guns.

The first types of impact guns were developed in the 19th century to drive nails into wood. These early designs were relatively heavy and very large, making them impractical for everyday use. In the 1970s, an American company called Fram Bros & Eckerhardt designed the first portable and practical impact gun which could be used by one person only.

Since then, several companies have released their own models of impact guns. These guns can be used for a wide variety of activities such as construction, maintenance, manufacturing and other industrial uses.

How It Works

Impact guns consist of three main components: the barrel, the compressed air cylinder and the trigger. After loading a magazine with nails, pins or other fasteners, you place it inside the gun’s barrel. Most guns have a magazine holder for storing the loaded magazines. You then take the magazine and slide it into the barrel. Using an Allen key or special tool, you tighten it in place.

You place a compressed air cylinder on your gun and then secure it with a latch or screw. Most guns require an air pressure of 90 to 120 pounds per square inch (PSI). The average construction air compressor can easily handle this task. However, some guns require more air pressure and may even require you to use a special high-pressure air compressor.

The trigger releases the compressed air from the cylinder and drives the fastener. There are various types of triggers such as single action and double action. Most of them are designed for right-handed use only. This means that if you’re left-handed you’ll have to spend a little more money to get a left-handed version of your gun.

Safety First!

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Safety is very important when working with an impact gun. You must always wear safety goggles to protect your eyes from flying debris or fasteners. Wearing ear defenders can also be highly recommended, especially in an industrial setting.

While impact guns are designed to prevent you from shooting your fingers, they can still cause serious hand and finger injuries. Always keep your hands away from the fastener when it is ejecting or releasing. Even when in a safety precaution, you should always handle impact guns with care and treat them like a loaded gun.

The fasteners can also be dangerous if they hit you at high speed. It’s best to wear long clothing to protect your legs and feet.

Before using the gun, always check the accuracy of your aim by sighting down the barrel. You should also wear gloves while handling and loading magazines to prevent skin oil from deteriorating the adhesive that keeps the nails, pins or fasteners in place. If this occurs, the magazine may become unreliable or jam during use.

Finally, always unload the gun when you finish using it and never leave it unattended with a magazine inserted.

Types of Impact Guns

There are four main types of impact guns: nail, pin, brad and stapler guns. Each one is designed to fire nails, pins or staples into wood, plastic, ceramic tile or other materials.

1. Nail Guns

Nail guns fire small, slim nails between 1 1/4 inches and 2 3/8 inches in length. They are available in standard, framing and finish sizes. The standard size is most commonly used for general construction. The finish size fires a smaller nail that is used for fine trim work. These types of guns generally cost between $80 and $200.

2. Brad Guns

These guns fire small, thin wood or plastic brads between 1/2 inches and 1 1/2 inches in length. These are generally used for filling holes in thin wood and are not as commonly used as other types of guns. They are similar in cost to other nail guns.

3. Pin Guns

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Pin guns fire small, thin metal pins between 3/8 inches and 1/2 inches in length. They are available in two common types: glassworking and picture hanging.

The glassworking pin gun is similar to the brad gun and is used for lightweight framing and construction tasks. It also fires 1/2-inch glass set pins, which are shorter than the common 1-inch brass pins used in picture frame hanging. Like the brad gun, it costs between $80 and $200.

The picture hanging pin gun is used primarily for hanging framed artwork on walls. It has a longer nose that allows it to reach pilot holes that are out of reach of other tools. This model costs between $100 and $250.

4. Staple Guns

Staple guns fire short, wide staples between 1/4 inches and 3/4 inches in length. They are designed for light construction tasks, such as securing insulation or building small fences. They cost between $40 and $80.

Power Tool Combo Kits

If you want to buy an impact gun that can also be used with other power tools, then it’s best to buy a power tool combo kit. These kits come with a range of attachments and allow you to switch between the different power options with ease.

Most kits contain an impact driver that allows you to use a wide range of hex shank drill bits and standard screwdriver bits. They also allow you to use a range of different sockets for driving and removing screws. It’s this flexibility that makes these tools so popular on construction sites.

Impact driver combos start at around $100 and can go up to around $400.

How to Choose an Impact Driver

If you decide to buy an impact driver instead of an impact gun, then there are several features you should look for to ensure you get the best results.

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The most important thing to consider is how much power the tool has. This is measured in volts (V) and amperes (A). The higher the voltage and amperes, the more power the tool uses and the more powerful it is.

Look for a model that has at least 12V and 2A. This is the bare minimum amount of power you should look for in any model. Additional features, such as a longer nose or an LED light, are available on higher-end models and are not necessary to buy if you are on a budget.

Types of Screws Used with an Impact Driver

Impact drivers allow you to use different types of screws other than standard wood screws. For example, there are long sheet metal screws that are thin and tough enough to hold metal sheets together.

Other types of screws are designed for very specific materials, such as masonry screws that are designed to grip tightly into mortar without penetrating through the back of the tile.

Buying an Impact Driver vs Buying a Power Tool Combo

The advantage of buying a combo kit is that you are buying everything you need in one package and you can start working right away.

The disadvantage is that you probably won’t be able to buy the specific attachments you need. For example, if you only want to use the impact driver to drive screws, then you are paying extra for the drill and other attachments you don’t plan to use.

Research different power tool combo kits before buying to make sure you are getting the features you need at a price that suits your budget.

What Impact Drive Size to Choose?

Impact drivers are usually measured by the diameter of the tip of the nose. For example, a 1/2 inch model has a 1/2 inch diameter tip, while a 20V model has a nose that is 20 mm in diameter.

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The size of the tip you need depends on the job you want to do. Heavier tips are better for working with masonry, while smaller tips are better for working in tighter spaces.

It’s important to have several different tips available so you have the right tip for every job. It’s not necessary to buy a complete set when you first buy your tool. You can buy them individually as required.

The most common sizes are:

1/2 inch

5/8 inch

3/4 inch

1/2 inch is the most common size and can be used in virtually any situation. It has a good combination of power and control and is the best all-round size to buy.

5/8 inch is good for driving larger screws into hard materials such as wood. It’s not as flexible as the smaller tips and is better for people with some experience using an impact driver.

3/4 inch is the next step up in terms of power. It’s mainly used for heavy-duty construction work.

The smaller the tip, the more control you have, which means you can use it in tighter spaces. The smaller tips also allow you to work with very small screws that a larger nose would not be able to handle comfortably.

The most common sizes are:

3 mm

2.5 mm

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1.5 mm

The smallest size is 1.5mm. These are mainly for very fine electronics work, such as putting in screws for an iPhone. They have almost no weight to them at all and are very easy to break if you are used to using something heavier.

Most people will be able to get by on the 1/2 inch or 5/8 inch impact driver. The 1/4 and 3/8 sizes tend to be more popular with hobbyists who are using their tools for model making and crafts.

What is a Quick-Change Socket?

Quick-change sockets are also known as clutch noses or impact sockets. The nose of the socket has a piece inside that moves in and out to grip the screw. This allows the tool to apply more or less power to the screw without the screw either slipping and going deeper into the material, or it snapping off completely.

These are mainly designed for working with soft materials such as wood. In harder materials, the repetitive jarring can damage the tool and it’s operator.

Quick-change sockets come in two main types:


The beveled socket has a tapered nose that allows it to fit in a confined space. They are generally used in impact drivers because the power from the tool is enough to drive the fasteners into the material.


The flat socket has a straight nose and is generally used in an impact wrench. The tool can apply more torque to the fastener because it’s not having to drive it into a confined space.

Most impact drivers come with beveled sockets, while most impact wrenches come with flat sockets. It’s also worth considering getting some quick-change sockets in different sizes. This will give you some flexibility in terms of fitting your fasteners.

Quick-change sockets are available in metric (mm) and Imperial (.050″) sizes. You will generally find either the standard 1/4 inch or the more unusual 9/32 inch size.

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Both types are convenient, with pros and cons for both:

Metric quick-change sockets are generally cheaper and more readily available. They also do not slip as much when starting a fastener, especially if there is any oil or grease on them.

Sources & references used in this article: