# What size are metric screws?

## What size are metric screws?

Metric clearance and tapping drill hole sizes.

Size Clearance Hole mm Tapping Drill (fine pitch)
M6 6.5 5.25 mm
M8 9 7 mm
M10 11 9.0 or 8.75 mm
M12 14 10.5 mm

## How are machine screw sizes measured?

Measuring Bolts and Screws Length is measured from the point at which the head sits flat with the surface, to the tip of the threads. Hex, pan, truss, button, socket cap, and round head screws are measured from right under the head to the end of the threads.

## Are machine screws metric?

A metric machine screw is actually a metric bolt. With a flat point and many different styles, they can fit a large range of applications. These screws are commonly utilized in machinery giving them their name.

## What do metric screw sizes mean?

Taking a closer look at this description, let’s explore its meaning: M = This designates the fastener is a metric size. 10 = The nominal diameter in millimeters. 1.0 = The thread pitch, or distance between threads, in millimeters.

## What is a size 8 screw in metric?

Metric Imperial Screw Conversion Chart

Gauge Metric diameter (mm) Pilot Hole size (mm)
8 4 2.5
10 5 3
12 5.5 3.5
14 6.5 4

## What are the sizes of screws?

Screw sizes are designated by a number that indicates the diameter and the length of the screw in inches (Table 10-2). The smallest diameter screw is 0, and the largest commonly available is 24. For bench work, the most useful sizes are 4 through 12. Of those sizes, 6, 8, and 10 are probably used more than any others.

## How is screw thickness measured?

Use a ruler or measuring tape to measure from one side of a thread to the other using the nearest fraction of an inch. For example, a #0 gauge screw is 1/16 of an inch in diameter, #1 is 5/64 of an inch, a #2 is 3/32 of an inch, and so on.

## What is a M2 screw?

M2 screws are typically used in the manufacture of small items of electrical equipment, laptops, cameras and mobile phones. The “M” designation for metric screws indicates the outer diameter of the screw in millimetres, so for an M2 screw, the outer diameter is 2mm.