
Pan head screws have a distinct broad head with rounded edges, resembling an inverted frying pan. They are versatile fasteners used in a variety of applications, from woodworking to machinery and industrial settings. With different sizes, lengths, and threading styles, these screws are a common choice for securing machine parts, metal components, guard rails, and even vehicle exterior parts like headlights or license plates. This topic will explore the characteristics, uses, and considerations when working with pan head screws, which are also often depicted in GIFs and pictures due to their unique shape and functionality.
Characteristics | Values |
---|---|
Head Shape | Broad with rounded edges, like an inverted frying pan |
Uses | Securing machine parts, woodworking, attaching metal, wood, fibreglass, and plastic |
Slot Type | Typically Phillips or crosshead, but other types are also used |
Threading | Various types, not usually self-tapping |
Coatings | Black phosphate, zinc, and others to protect against corrosion or for galvanization |
Size | Available in a multitude of sizes and lengths |
What You'll Learn
Pan head screw sizes and lengths
Pan head screws have a distinct broad head with rounded edges, resembling the shape of an inverted frying pan. They are commonly used to secure machine parts, especially those made of metal, and are also widely used in woodworking and automotive applications.
The size and length of pan head screws vary depending on their intended use. For example, a 2-inch (approximately 5 cm) pan head screw is suitable for hanging a picture on a wall with a metal stud. On the other hand, a very short pan head screw might be found inside a computer case, used to secure components or the case itself.
When selecting a pan head screw, it is essential to consider its strength and weight rating, as well as ensuring the correct size and threading. This is particularly important when working with machinery or any project that involves significant weight-bearing loads. The load capacity of the screw should be confirmed to ensure it can safely bear the required weight.
Additionally, when replacing a pan head screw, it is crucial to match the size and threading of the original screw. A variety of threading types are available, depending on the intended application. For machinery, pan head screws are typically not self-tapping, requiring pre-threaded holes.
Pan head screws are also available with different coatings, such as black phosphate to protect against corrosion, or zinc for galvanization, further enhancing their versatility and suitability for various applications.
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Phillips- or crosshead-slot
Phillips-head screws are commonly used in machine screws, with wide heads, a flat bearing surface, and vertical, chamfered, or curved sides. They are available in a range of sizes, typically distinguished by a number such as "Phillips #00". The corresponding screwdriver size is indicated by a number as well, with larger numbers indicating a larger tip. For example, a No. 2 Phillips screwdriver would be used for larger screws, while a No. 0 would be needed for very small screws.
One advantage of Phillips-head screws is that they can be driven with a standard flat-blade screwdriver in a pinch, although this may increase the risk of cam-out and damage to the screw head. It is important to match the driver size to the screw head to prevent damage. Additionally, Phillips-head screws are less likely to slip out compared to slotted screws, reducing the chance of scratching finish work.
When using Phillips-head screws, it is important to be aware of the potential for cam-out, especially at lower torque levels. This can be mitigated by using a hollow-ground screwdriver, which has a curved shape that helps to prevent the screwdriver from leaving the slot.
Overall, Phillips- or crosshead-slot screws offer a secure and convenient fastening option, particularly for machine screws and applications where a strong, flush mount is required.
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Vented screws
- Socket Head Cap
- Phillips Pan Head
- Phillips Flat Head
- Hexagonal Head
- Socket Set
They also come in different types, such as:
- Vented Cap Screw
- Vented Machine Screw
- Vented Shoulder Screw
- Vented Set Screw
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Picture hanging
Hanging a picture can be a daunting task, but it doesn't have to be. Here is a comprehensive guide to hanging pictures using pan head screws.
Planning Your Picture Placement
First, decide where you want to hang your picture. If you're hanging a gallery of photos, you can apply the 57-inch rule to the centermost picture. This rule states that hanging pictures 57 inches from the floor places them at eye level, which is a technique used in galleries and museums.
Gathering Your Tools and Materials
Before you begin, make sure you have the necessary tools and materials. These may include a drill, screwdriver, hammer, tape measure, level, and stud finder. You will also need screws, picture hangers, and anchors if your picture is heavy.
Choosing the Right Screw
When choosing a screw for picture hanging, consider the type of wall you have. If you have drywall, you may need to use a drywall anchor or drill into a stud for added support. For plaster walls, you will likely need to create a pilot hole before inserting screws. Wood panel walls typically require thin screws or nails, while brick walls require hammering into the mortar instead of the brick.
For hanging pictures, Bear Claw Screw Hangers are a popular choice. These are double-headed anchorless screws with a sharp self-drilling tip, so you don't need to create a pilot hole. They can be used on drywall, plaster walls, or lath and provide strong support.
Another option is concrete screws, which are designed for solid surfaces like concrete, brick, or stone. These screws have a serrated cutting thread that penetrates the surface and provides a secure hold.
If you're looking for a screw compatible with multiple surfaces, consider Wall Dog Screws. These one-piece screws can penetrate metal and wood studs, and you can install them without a drill on drywall, gypsum board, and plasterboard.
Installing the Screw
Now, you can begin the process of installing the screw. First, mark the wall where you want to install it. If you're using a Bear Claw Screw Hanger, puncture the screw into the wall and drive it in with a screwdriver.
For concrete screws, clean the hole to ensure it's free from debris before driving in the screw.
With Wall Dog Screws, the installation process differs depending on the substrate. If installing on a plaster wall, brick, or concrete, drill a 3/16" pilot hole first. On metal or wood substrates, skip the drill and use a Phillips screwdriver instead.
Hanging Your Picture
Once you've installed the screw, you can hang your picture. If you're using picture wire, attach it to your frame first. Then, hang the picture by hooking the wire onto the screw. Use a level to ensure your frame is straight, making slight adjustments as needed.
And that's it! You've successfully hung your picture using pan head screws. Enjoy your newly decorated space!
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Sheet metal screws
Type A sheet metal screws have a coarse thread, while Type AB has a fine thread. Both types are threaded to the very tip of the screw, allowing them to tap their own holes as they are driven into the material. This design makes them particularly useful for soft or sheet materials. Sheet metal screws can also have a pointed end, a drill point end, or a smooth shank and tapered point, depending on the application.
When selecting sheet metal screws, it is important to consider factors such as strength and weight ratings, correct size and threading, and proper replacement procedures, especially when working with machinery or weight-bearing projects. Sheet metal screws are available in various sizes and lengths to accommodate different needs, and they can be made with protective coatings like black phosphate or zinc to prevent corrosion and galvanisation.
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Frequently asked questions
Pan head screws have a broad head with rounded edges, resembling the shape of an inverted frying pan.
Pan head screws are used to secure machine parts, especially when the components are made of metal. They are also used in woodworking and for attaching exterior components to vehicles, such as headlights or license plates.
A variety of threading types are available for pan head screws, depending on their intended use. When used in machinery, they typically do not have self-tapping threads, so the holes need to be pre-threaded.