7 Common Types of Screws

September 27, 2023

What is a screw?

A screw also known as threaded screw, is a broad category of threaded fastener, acting as a wedge as it pushes into the fastened material. It usually has a head to be turned with a tool (such as screwdriver, hammer, or wrench), and a shank from the underside of the head to the tip.

7 Common Types-of-Screws

What are screws made of and how to use them?

Typically, screws are made from low to medium carbon steel due to its strength. However, other tough metals may also be substituted, such as stainless steel, brass, aluminum, titanium alloy. Screws may be coated or plated with cooper, zinc, nickel, or chromium for extra protection and strength.
The choice of screw materials depends on the intended application. For example, Low carbon steel is best for machine manufacturing, medical device manufacturing, and automotive manufacturing. Medium carbon steel is ideal for automotive parts. Stainless Steel has a wide selection of applications. Brass provides cosmetic appeal common in marine applications. Aluminum works well for binding lighter components. Titanium fasteners are common within the aerospace industry, medical applications and other heavy-duty applications.

What are the common types of screw?

​

No.

Type

Description

Application

Screw Image

1

Wood Screws

Wood screws are the most widely used screws. They have a fully threaded or semi-threaded shank and typically have a piercing tip for penetrating wood. Wood screws are commonly made of brass, steel, and bronze materials. They come in a wide variety of threads, sizes, and drives to suit your needs.

Wood screws  are used to attach wooden workpieces like wall studs, molding, or furniture.

 

 Wood screws are the most widely used screws. They have a fully threaded or semi-threaded shank and typically have a piercing tip for penetrating wood. Wood screws are commonly made of brass, steel, and bronze materials.

2

Machine Screws

Machine screws are used to join various machinery or electronic parts together with flat or rounded heads but without pointed tips. They are seen in various material including nylon, brass, stainless steel, and carbon steel. Machine screws range widely in size and drive types from tiny screws to large screws.

Machine screws are used to fasten various parts of machine industries such as electronics, engineering, and manufacturing equipment.

Machine screws are used to join various machinery or electronic parts together with flat or rounded heads but without pointed tips. They are seen in various material including nylon, brass, stainless steel, and carbon steel. Machine screws range widely in size and drive types from tiny screws to large screws.

3

Thread Cutting Machine Screws

Thread cutting machine screws are a type of self-tapping screw with sharp edges that creates threads in existing holes in metal. The purpose of using thread cutting machine screws is to reduce the build-up of internal tool stresses. They are ideal for extremely hard materials.

Thread cutting screws are often used with wood and metal.

 

Thread cutting machine screws are a type of self-tapping screw with sharp edges that creates threads in existing holes in metal. The purpose of using thread cutting machine screws is to reduce the build-up of internal tool stresses.

4

Sheet Metal Screws

Sheet metal screws secure and tighten metal objects with fully fine threads and pointed tips. The fine threads provide superior grip, while the sharp tips are made to penetrate tough metal surfaces. Sheet metal screws come in a range of sizes with different head styles, including flat, round, and hex.

Sheet metal screws are used to bind wood, plastic, or even other pieces of metal to a piece of sheet metal.

 

Sheet metal screws secure and tighten metal objects with fully fine threads and pointed tips. The fine threads provide superior grip, while the sharp tips are made to penetrate tough metal surfaces. Sheet metal screws come in a range of sizes with different head styles, including flat, round, and hex.

5

Self Drilling Screws

 

 

Self drilling screws are a type of self-tapping screw. They come with a highly sharp curved end that almost work as a twist drill bit so that they do not need pilot holes for installation. Self drilling screws can drill and tap their own holes in harder materials to save using tools.

Self drilling screws are typically used for quick drilling into metal or wood.

 

 

Self drilling screws are a type of self-tapping screw. They come with a highly sharp curved end that almost work as a twist drill bit so that they do not need pilot holes for installation.

6

Socket Screws

Socket screws, also known as socket cap screws and socket head screws, are a type of machine screw. They have cylindrical heads with a hexagonal internal drive. Due to the feature, they allow to use where externally dampening fasteners are not desirable. Socket screws are perfect for a fastener to sit under the material surface.

Socket screws are mainly used to fasten machine parts.

Socket screws, also known as socket cap screws and socket head screws, are a type of machine screw. They have cylindrical heads with a hexagonal internal drive.

7

Shoulder Screws

Shoulder screws, also known as stripper bolts or shoulder bolts, have round heads and machine ends. Shoulder screws are designed to be fitted firmly to one part without locking the other part and keeping axial clearance. Shoulder screws provide versatility by acting as shafts for rotating items.

Shoulder screws are used for rotating items such as shoulder bearings and bushings.

 Shoulder screws, also known as stripper bolts or shoulder bolts, have round heads and machine ends.

Screws are used everywhere, for its more information please contact us.
Cold forming is the molding process of screws, U-Need provides the molds and parts of cold forging to help you achieving better products. Welcome your inquiry (E-mail: info@uneedpm.com or send a message to us).