Monday, August21, 2017 L-36.com

Wood Screw Dimensions

For sizes 0-24: Head - Shank - Root - TPI


This page gives the basic physical dimensions of wood screws from #0 to #24. There is also a page on Wood Screw Pilot Hole Sizes that also lists the key dimensions as well as the various recommendations made for pilot hole sizes including ones that work for fine work as well as those that work for construction.

No. Of
Screw
Head
Diameter
Shank Diameter Root Diameter Threads
Per Inch
No. Of Screw
MinMax Basic
Dec. Size
Nearest Fractional
Equivalent
Average
Dec. Size
Nearest Fractional
Equivalent
0 .105 .119 .060 1/16 +.002 .040 3/64 +.007 32 0
1 .130 .146 .073 5/64 +.005 .046 3/64 28 1
2 .156 .172 .086 3/32 +.007 .054 1/16 +.008 26 2
3 .181 .199 .099 7/64 - .010 .065 1/16 - .002 24 3
4 .207 .225 .112 7/64 - .003 .075 5/64 +.003 22 4
5 .232 .252 .125 1/8 .085 5/64 - .007 20 5
6 .257 .279 .138 9/64 +.002 .094 3/32 18 6
7 .283 .305 .151 5/32 +.005 .102 7/64 +.007 16 7
8 .308 .332 .164 5/32 - .007 .112 7/64 - .003 15 8
9 .334 .358 .177 11/64 - .005 .122 1/8 +.003 14 9
10 .359 .385 .190 3/16 - .002 .130 1/8 - .005 13 10
11 .385 .411 .203 13/64 .139 9/64 +.001 12 11
12 .410 .438 .216 7/32 +.003 .148 9/64 - .007 11 12
14 .461 .491 .242 1/4 +.008 .165 5/32 - .009 10 14
16 .512 .544 .268 17/64 - .002 .184 3/16 +.003 9 16
18 .563 .597 .294 19/64 +.003 .204 13/64 - .001 8 18
20 .614 .650 .320 5/16 - .007 .223 7/32 - .004 8 20
24 .716 .756 .372 3/8 +.003 .260 1/4 - .010 7 24

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The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerious of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.