DRILL GUIDE
Below you will find the included tap and extractor sizes as well as the drill bits that pair with them. Select the thread
pitch you intend to tap, then match it with the drill bit size listed below. In rare cases if your material is exceptionally
thin or thick, you may need to step up (thick) or down (thin) in drill size within the pouch provided, however the
below drill bit pairings work with the majority of applications. The chart below also includes part numbers for each
piece found in this kit.
Thread Size
4-40 NC
6-32 NC
8-32 NC
10-24 NC
10-32 NC
12-24 NC
1/4"-20 NC
1/4"-28 NF
5/16"-18 NC
5/16"-24 NF
3/8"-16 NC
3/8"-24 NF
7/16"-14 NC
7/16"-20 NF
1/2"-13 NC
1/2"-20 NF
M3x0.6
M3x0.5
M4x0.75
M4x0.7
M5x0.9
M5x0.8
M6x1.0
M7x1.0
M8x1.25
M8x1.0
M9x1.25
M9x1.0
M10x1.5
M10x1.25
M10x1.0
M11x1.5
M12x1.75
M12x1.5
M12x1.25
1/8"-27 NPT
1/8"-28 BSP
Extractor Size
Extractor #1
Extractor #2
Extractor #3
Extractor #4
Extractor #5
124 PIECE AUTO MASTER
TAP AND DIE SET
Tap Part #
Die Part #
MT440T
MT632T
MT832T
MT1024T
MT1032T
MT1224T
MT1420T
MT1428T
MT51618T
MT51618D
MT51624T
MT51624D
MT3816T
MT3824T
MT71614T
MT71614D
MT71620T
MT71620D
MT1213T
MT1220T
MT306T
MT305T
MT4075T
MT407T
MT509T
MT508T
MT610T
MT710T
MT8125T
MT810T
MT9125T
MT910T
MT1015T
MT10125T
MT10125D
MT1010T
MT1115T
MT12175T
MT12175D
MT1215T
MT12125T
MT12125D
MT1827T
MT1828T
Extractor part #
Page 2
Drill Bit Size
MT440D
No. 43
MT632D
No. 36
MT832D
No.29
MT1024D
No. 25
MT1032D
No. 21
MT1224D
No. 16
MT1420D
MT1428D
Letter F
Letter I
MT3816D
MT3824D
Letter Q
Letter U
25/64"
MT1213D
27/64"
MT1220D
29/64"
MT306D
No. 39
MT305D
No. 39
MT4075D
No. 30
MT407D
No. 30
MT509D
No. 20
MT508D
No. 19
MT610D
MT710D
Letter B
MT8125D
Letter J
MT810D
Letter H
MT9125D
MT910D
Letter O
MT1015D
Letter R
Letter S
MT1010D
Letter T
MT1115D
13/32"
MT1215D
Letter Z
7/16" *
MT1827D
Letter Q
MTBSP28
21/64"
Drill Bit Size
EO1A
EO2A
EO3A
EO4A
EO5A
19/64"
124MATDS
Drill Bit Part #
43A
36A
29A
25A
21A
16A
No. 7
No. 3
HDF
HDI
5/16"
HD20A
HDQ
HDU
HD2538A
HD2738A
HD2938A
39A
39A
30A
30A
20A
19A
No. 9
HDB
HDJ
HDH
5/16"
HD20A
HDO
HDR
HDSA
HDT
3/8"
HD24A
HD2638A
HDZRS
HD2838A
HDQ
HD21A
Drill Bit Part #
5/64"
HD510A
7/64"
HD710A
5/32"
HD1010A
1/4"
HD1610A
HD19A
* F/ material < 1/2" use 27/64"
7A
3A
9A
1812422-14