Are grub screws all the same size?

Table of Contents

Instead, they’re usually threaded right to the top, and are the same diameter all the way along their length, meaning that the grub screw can be fully driven into its hole to sit flush with (or even countersunk into, depending on the application) the workpiece.

What size is a grub screw?

You would need a 1.5, 2, 2.5 and 3mm for these grub screws.

Why is a grub screw called a grub screw?

A grub screw, also sometimes known as a ‘set-screw’ in North America and other countries, is actually rather confusingly a type of bolt. This is because it is grooved, so that it may be threaded into a pre-existing threaded hole, rather than driven into a surface, like a traditional screw would be.

How do you drill out a grub screw?

Turn the grub screw clockwise slightly with either an Allen wrench or flat-head screwdriver, depending on the screw.
Drill a hole through the center of the screw with an appropriate size drill bit.

How do I choose a set screw?

When selecting the set screw size, you should select a size where the indentation on the end of the screw is apparent on the cylindrical surface of the shaft. The following figure shows the correlation between the tightened shaft diameter and the set screw (half point).

Are set screws a standard size?

In our experience, Set Screws are most commonly available in sizes 2-56 through 1″ in imperial and M2-M24 in metric diameters with a hex socket drive on one end and a cup point on the other.

What are the different types of screws?

Choose from flat -, oval -, and soft-tip set screws. Also known as dog-point set screws, these set screws have a protruding tip that locks within a mating hole or slot to keep parts aligned.

What kind of screw do you use for a cup screw?

Cup point set screws have a thin edge that digs into the contact surface for a secure hold on a wide range of surfaces. Make frequent adjustments with minimal surface damage. Choose from flat -, oval -, and soft-tip set screws.

What are dog point screws?

Also known as dog-point set screws, these set screws have a protruding tip that locks within a mating hole or slot to keep parts aligned. For a secure hold on soft materials such as brass, the pointed tip wedges into the contact surface.