US Screw size conversion chart:
| Screw Size | Inch Decimal | Nearest Fraction | Metric Equivalent |
| #0 | 0.060 in. | 1/16" | 1.52 mm |
| #1 | 0.073 in. | 5/64" | 1.85 mm |
| #2 | 0.086 in. | 3/32" | 2.18 mm |
| #3 | 0.099 in. | 7/64" | 2.51 mm |
Full Answer
What is a size 6 screw in MM?
Metric versus Imperial equivalent screw dimensions.MetricImperialDiameter (mm)Length (mm)Nominal Size no.3.52063.52563.530627 more rows
What size is a number 8 screw in MM?
Metric Imperial Screw Conversion ChartDiameter (mm)Length (mm)Closest Imperial Size Gauge x Length3.5mm306 x 1 1/4406 x 1 1/24mm128 x 1/2168 x 5/852 more rows
What are the sizes of screws?
American Screw SizesTHREAD DIAMETERSizeNearest FractionInch#69/640.13#85/320.16#103/160.198 more rows•May 25, 2022
How do you identify screw sizes?
0:131:50How to Measure a Screw Size - YouTubeYouTubeStart of suggested clipEnd of suggested clipLine it up with a ruler and measure it from the tip of the screw to the head. If the screw has aMoreLine it up with a ruler and measure it from the tip of the screw to the head. If the screw has a rounded head measure to the flat.
Is a #8 or 10 screw bigger?
Machine screws are often found in sizes of: 0, 1, 2, 3, 4, 5, 6, 8, 10, 12, 14—the larger the number, the larger the screw.
What does a #8 screw mean?
The #8 gauge screw has a major diameter of 0.17" and 8 TPI. The screw is 1-1/4" long, a measurement taken from the bottom of the head to the point.
What does screw size M4 mean?
The M4 machine screw has a thread diameter of 4 millimetres, in simple terms the M stands for millimetres followed by the size – in this case 4 mm.
How are metric screws sized?
Metric nuts and bolts are commonly referenced using 'M' sizes, for example: M3, M8, M12. But the size of a metric fastener is more accurately specified using diameter, pitch and length dimensions, in millimeters. For nuts the size dimensions used are simply diameter and pitch.
What do screw size numbers mean?
The first number is the diameter. The bigger the number the bigger the screw. The second number is the number of threads per inch. Check your state and local codes before starting any project. Follow all safety precautions.
How long is a M6 screw?
Metric threads are used outside of the USA, and commonly in products by HP and other global entities. You can identify an M6 screw by measuring the diameter with a ruler. It'll be 6 mm, or slightly more than 7/32 inches (0.228″).
How do you measure a m8 screw?
0:202:15How to Read a Metric Screw Thread Callout - YouTubeYouTubeStart of suggested clipEnd of suggested clipAnd generally refers to the length from the bottom of the fasteners head to the end of the fastener.MoreAnd generally refers to the length from the bottom of the fasteners head to the end of the fastener.
What is M14 thread?
Tap sizeBasic major dia (mm)Basic major dia (inch)M12 x 1.2512mm.4724M14 x 214mm.5512M14 x 1.514mm.5512M16 x 216mm.629924 more rows
Metric and Imperial Screw Sizes
Most manufacturers put both the metric and imperial size on the box of screws which is very helpful, however when purchasing online, many retailers...
Imperial Screw Sizes Explained
A wood screw is sized by two different numbers. First is the Gauge of the screw which refers to the diameter – the larger the number, the larger th...
Metric Screw Sizes Explained
As you can imagine, the metric system is a little simpler to understand for the uninitiated however if you’re not used to it, or still working in I...
Metric Imperial Screw Conversion Chart
Please use this table to match the metric size to the imperial screw size. Please remember that the conversion is not exact, but this is generally...
Other Acronyms and Abbreviations Used to Describe Screws
There are a range of acronyms and letters that you often find on screw boxes or in their online descriptions. Here is a summary of the most common,...
Screw Size Identifiers
Find thread size, screw size, thread pitch, diameter, or drill bit size.
Wall-Mount Thread-It Screw, Bolt, and Nut Size Identifiers
Mount to a wall for easy access, and thread your fastener into holes or onto plugs for quick and accurate size identification.
Thread-It Screw, Bolt, and Nut Size Identifiers
Thread your fastener into holes or onto plugs for quick and accurate size identification.
Threads per Inch and Thread Pitch Identifiers
Determine threads per inch and thread pitch on a variety of external and internal threads.
Reference Charts
Style C charts list specifications and torque tightening guidelines for alloy steel socket screws.
What is ST screw?
ST – Self Tapping; These screws have a tip that will allow them to be screwed into (typically wood) without a pilot hole being drilled. This saves a lot of time!
Do you put metric and imperial on screws?
Most manufacturers put both the metric and imperial size on the box of screws which is very helpful, however when purchasing online, many retailers do not . This is largely because the title of the product becomes too long and cumbersome, so something has to go.