Types Of Machine Screws Heads

These are generally found on the screws with a hex drive on the top of their head.

Types of machine screws heads.

There are two types of hex screws. And there s a basic look at the various types of screws. A sheet metal screw is similar to a wood screw but has a pan head. A cross head features two full length slots that cross which allows a flat head screwdriver to be used and makes the screw usable even if one slot has been worn away.

A brief introduction to the different types of screw heads. A machine screw is generally a smaller fastener less than 1 4 inch 6 35 mm in diameter threaded the entire length of its shank that usually has a recessed drive type slotted phillips etc. Set screws machine screws with no head for screwing all the way into threaded holes. Machine screws are also made with socket heads see above in which case they may be referred to as socket head machine screws.

A robertson screw has a square shaped indention and requires a matching driver head. Machine screws come with different types of heads. An allen screw has a hexagonal indent in the head requiring an allen wrench and the other type has no indent in the hexagonal head and must be applied or removed with a socket wrench. At a minimum it is a set of shaped cavities and protrusions on the screw head that allows torque to be applied to it.

A screw drive is a system used to turn a screw. Mating screws mating screws have a shoulder that matches the diameter of the sex bolts they are used with. Know what kind you need for your project before going to the hardware store or home center. Slotted head screws are what most people refer to as flathead screws because they have one narrow opening for a flat screwdriver.

These are strongest and robust of all types of screws heads and are recognized for their durability and quality therefore made of high grade carbon and stainless steel. Hanger bolts hanger bolts have wood thread on one end and machine thread on the other end. Usually it also involves a mating tool such as a screwdriver that is used to turn it the following heads are categorized based on frequency with some of the less common drives being classified as tamper resistant. A screw is a shaft which has a groove on its surface.

There are different types of screw heads which have different applications such as robertson slotted and polydrive. Machine screws come in coarse thread which means they have 24 threads per inch and in fine thread which means they have 32 threads per inch. It is designed to hold objects in a certain alignment. Although many people refer to any screw head that has cross shaped grooves as a phillips head there are other types of screws that have similar slots.

The screws have cylindrical heads and long vertical sides. While there are a lot of choices available there are only a few different types of screws a woodworker will ever need.