Types of Screws and Their Uses [with Pictures]

What is Screws?

Types of Screws and Their Uses [with Pictures] :- A Screw is a sharp-pointed short metal pin of certain pitch length with helical threads running round of it. It is used to fasten two pieces together or join them for a desired working. It can fasten any type of piece made of either wood or metal. There are number of types of screws used to fasten various types of parts performing different functions. ( Types of Screw Heads )

It is usually made of metal with sharp point at one end and a head at another end. At the middle section which is known as shank has thread around it from the sharp point to the certain length that is partially of fully covered. To tightened the parts the majority of rotation of screw is towards clockwise direction and a screwdriver is required to perform this action.

Different Types of Screws

Wood Screws
Deck Screws
Drywall Screws
Sheet Metal Screws
Eye Screws
Double Ended Screws
Concrete Screws
Lag Screws
Set Screws
Machine Screws
Security Screws
Hammer Drive Screws
Mirror Screws

1. Wood Screws: ( Types of Screws )

Wood screw is a common type of screw which is made up of brass, steel and bronze material. They are mainly used for wooden applications and very useful to fasten wooden pieces of work. It is very easy to fasten wooden parts by digging them into wood. It is slightly tapered as we move towards head of the screw the diameter of the screw is thicker in comparison of the tip. It comes with both partially or fully covered threads at the shank. The shape of the head of this screw depends upon the various applications.

2. Deck Screws: ( Types of Screws )

They are just like wood screws. These screws are mainly for outdoor applications used in wooden decks. They have a property to resist corrosion and rust like coating due to which they can withstand moisture environment conditions. They are mostly come with partially covered threads with sharp edges and narrow point.

3. Drywall Screws: ( Types of Screws )

Drywall screws are used to fasten drywall panels with soft woods. The have comparatively Hight pitch and length. But they don’t have corrosion resistant property in comparison of deck screws. It is not necessary to pre drill hole as they have self drilling tip which eliminates the pre-drilling.

4. Sheet Metal Screws: ( Types of Screws )

Sheet metal screws is used to fasten hard surfaces as they are able to dig easily into hard metal surfaces. They are mainly used to tighten metal pieces but usable also in plastic, rubber and wooden type of materials. They have various shapes and sized with different head styles like flat, truss, hex, oval, etc. depends upon the applications. They are fully covered with threads with sharp pointing edge. They comes under two categories, In first category pre drilling is required before entering into the material while in second category, self drilling is dominant which does not required pre drilling.

5. Eye Screws: ( Types of Screws )

The eye screw consist with a loop at the top end and the threads running around the shank of the screw. The are very easy to go inside a metal and provides stability and strength so that an object can be easily to pull out or lifted with the help of rope. The eye shape loop are mainly to tie ropes for lifting purposes.

6. Double Ended Screws: ( Types of Screws )

These screws are used to fasten wooden parts or where two pieces are able to spin together. They are headless screws with threads running around at both the ends. They have a combination of either woodless screw or wood screw with machine screw at both ends. These are used to hide the joints. They are easily attachable or detachable with the hands of operator, so they are very easy to use. But in these type of screws, a pre drilled pilot hole required for insertion.

7. Concrete Screws: ( Types of Screws )

Concrete screws are used to fasten concrete or masonry with metal, wood or any other material. They are consist of stainless steel or carbon screw with Philips head or slotted hex washer screws. They comes in blue color without corrosion resistant coating. Concrete screws are named as masonry screws or anchors. In these screws, pre drilling is required.

8. Lag Screws: ( Types of Screws )

Lag screws are used in heavy working designed to fasten wooden pieces. They are the toughest screws comes in hex or square headed with coarse threaded and massive in size, which are able to sustain heavy work pieces. Lag screws are a type of self-tapping screws.

9. Set Screws: ( Types of Screws )

These are headless screws used to resist relative motion between two rotating objects or resist a motion to secure an object within or against another object. They are generally headless with completely covered with threads running around it. They comes with different types of tip styles such as cup point, flat point, half dog point, cone point. These styles are utilizes according to various applications. Along with different tip styles, they come under various drive styles also such as straight slot, hex slot, square slot. The type of screws passes through a threaded hole in the outer workpiece and is tightened against the inner workpiece to prevent it from moving relative to the outer workpiece. It produces clamping force through the bottom tip which projects through the hole.

10. Machine Screws: ( Types of Screws )

Machine screw is a unique type of screw which are much stronger in comparison of other types of screws, used to fasten various types of metal parts in different machinery or construction. It is used like other fasteners to join two or more metal objects. There size of diameter is defined by (ASME) American society of mechanical engineers is featuring up to 0.75 inches.

They come under the range of 0.75 inches but can’t exceed 0.75 inches in diameter. They come smaller in size in comparison of most other types of screws. Machine screws have uniform threading from the top of the screw to the bottom. Machine screws preferred over other larger screws because they come with varieties of applications and used to join countless types of objects, products and surfaces. Machine screws are made up of different materials like stainless steel, aluminum, etc.

11. Security Screws: ( Types of Screws )

Security screws are unique type of screws also called as tamper resistant screw. They are standard screws with unique styles of head which are possible to remove with common tools. A special type of tools is required to remove these types of screws that’s why they are known as anti-thief screw. Any type of screw which are unable to remove with Philips head driver or slot style driver could be considered as a security screw. These type of fasteners are used in public areas where assembly is easily accessible to the public.

12. Hammer Drive Screws: ( Types of Screws )

They find applications in heavy type of fastenings. They are also known by the name U-drive screws, drive screws or non-slotted round screws. They come with round heads and unique structure which ensures that durable, strong and able to sustain for long period. They are use for general house operations like attach sign board on the wall, name plates or other similar purposes. They have multiple start heads and consist of large helical angles. To easily drive these types of screws such tools like hammer, mallet or hammer drive are very usable.

13. Mirror Screws: ( Types of Screws )

These are special types of screws used to fasten mirrors on the walls and any additional brackets. They are a type of wood screws or machine screws which are partially covered with internal threads and comes with slotted countersunk head.

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