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Tap and die
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===Tap drill sizes=== {{Main|Drill and tap size chart}} {| width="90%" border="0" align="center" cellspacing="5" summary="Tap drill bit size table" |- ! Imperial tap and drill bit size table !! Metric tap and drill bit size table !!<ref> {{cite web |url = http://www.boltdepot.com/fastener-information/US-Tap-Drill-Size.aspx |title = US Tap and Drill Bit Size Table |publisher = BoltDepot.com |access-date = 2006-12-03 |url-status = live |archive-url = https://web.archive.org/web/20061201191035/http://www.boltdepot.com/fastener-information/US-Tap-Drill-Size.aspx |archive-date = 2006-12-01 }}</ref><ref> {{cite web |url = http://www.boltdepot.com/fastener-information/Metric-Tap-Drill-Size.aspx |title = Metric Tap and Drill Bit Size Table |publisher = BoltDepot.com |access-date = 2006-12-03 |url-status = live |archive-url = https://web.archive.org/web/20061110035435/https://www.boltdepot.com/fastener-information/Metric-Tap-Drill-Size.aspx |archive-date = 2006-11-10 }}</ref> |- | valign="top" | {| align="center" border="1" style="border-collapse: collapse; text-align: center; nowrap" |- class="infotableheader" bgcolor="#eee8c6" ! Tap !! Fractional drill bit !! Number drill bit !! Letter drill bit |- ! 0-80 | {{frac|3|64}} || - || - |- bgcolor="#EEEEEE" ! 1-64 | - || 53 || - |- ! 2-56 | - || 50 || - |- bgcolor="#EEEEEE" ! 3-48 | - || 47 || - |- ! 4-40 | {{frac|3|32}} || 43 || - |- bgcolor="#EEEEEE" ! 5-40 | - || 38 || - |- ! 6-32 | {{frac|7|64}} || 36 || - |- bgcolor="#EEEEEE" ! 8-32 | - || 29 || - |- ! 10-24 | {{frac|9|64}} || 25 || - |- bgcolor="#EEEEEE" ! 10-32 | {{frac|5|32}} || 21 || - |- ! 12-24 | {{frac|11|64}} || 16 || - |- bgcolor="#EEEEEE" ! {{frac|1|4}}-20 | {{frac|13|64}} || 7 || - |- ! {{frac|1|4}}-28 | {{frac|7|32}} || 3 || - |- bgcolor="#EEEEEE" ! {{frac|5|16}}-18 | {{frac|17|64}} || - || F |- ! {{frac|5|16}}-24 | - || - || I |- bgcolor="#EEEEEE" ! {{frac|3|8}}-16 | {{frac|5|16}} || - || - |- ! {{frac|3|8}}-24 | {{frac|21|64}} || - || Q |- bgcolor="#EEEEEE" ! {{frac|7|16}}-14 | {{frac|23|64}} || - || U |- ! {{frac|7|16}}-20 | {{frac|25|64}} || - || - |- bgcolor="#EEEEEE" ! '''{{frac|1|2}}-13''' | {{frac|27|64}} || - || - |- ! {{frac|1|2}}-20 | {{frac|29|64}} || - || - |- bgcolor="#EEEEEE" ! {{frac|9|16}}-12 | {{frac|31|64}} || - || - |- ! {{frac|9|16}}-18 | {{frac|33|64}} || - || - |- bgcolor="#EEEEEE" ! {{frac|5|8}}-11I | {{frac|17|32}} || - || - |- ! {{frac|5|8}}-18 | {{frac|37|64}} || - || - |- bgcolor="#EEEEEE" ! {{frac|3|4}}-10 | {{frac|21|32}} || - || - |- ! {{frac|3|4}}-16 | {{frac|11|16}} || - || - |- bgcolor="#EEEEEE" | colspan="4" | <span style="font-size:87%;">Drill sizes are for 75% depth of thread.</span> |} | valign="top" | {| align="center" border="1" style="border-collapse: collapse; text-align: center; nowrap" |- class="infotableheader" bgcolor="#eee8c6" ! Tap !! Metric drill !! Imperial drill |- ! 3 mm - 0.5 | 2.5 mm || - |- bgcolor="#EEEEEE" ! 4 mm - 0.7 | 3.3 mm || - |- ! 5 mm - 0.8 | 4.2 mm || - |- bgcolor="#EEEEEE" ! 6 mm - 1.0 | 5.0 mm || - |- ! 7 mm - 1.0 | 6.0 mm || 15/64 |- bgcolor="#EEEEEE" ! 8 mm - 1.25 | 6.8 mm || 17/64 |- ! 8 mm - 1.0 | 7.0 mm || - |- bgcolor="#EEEEEE" ! 10 mm - 1.5 | 8.5 mm || - |- ! 10 mm - 1.25 | 8.8 mm || 11/32 |- bgcolor="#EEEEEE" ! 10 mm - 1.0 | 9.0 mm || - |- ! 12 mm - 1.75 | 10.3 mm || - |- bgcolor="#EEEEEE" ! 12 mm - 1.5 | 10.5 mm || 27/64 |- ! 14 mm - 2.0 | 12.0 mm || - |- bgcolor="#EEEEEE" ! 14 mm - 1.5 | 12.5 mm || 1/2 |- ! 16 mm - 2.0 | 14.0 mm || 35/64 |- bgcolor="#EEEEEE" ! 16 mm - 1.5 | 14.5 mm || - |- | colspan="3" | <span style="font-size:87%;">Drill sizes are for 75% depth of thread.</span> |} |}
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