Special Taps

Thread cutting taps are utilized to cut internal threads on product and machinery components. Thread Check Inc. offers thread cutting taps in a wide range of styles to suit many applications, including unified, metric, Acme, buttress, helical coil, nptf, npt, and special custom threads. Thread Check Inc. carries an extensive inventory of thread cutting taps and forming taps in a both plug and bottoming styles that can be used in a wide range of materials. Thread cutting taps are also available in tap and die sets. Pipe taps are used to thread and rethread materials including aluminum, brass, copper, magnesium and steel

8 and 12 Pitch Taps

Special Pitch Taps
EDP Number EDP Number Overall Length Thread Length Square Length Shank Diam Square Size
Plug Bottom Thread Pitch A B C D Style View
32001 32002 -8 5-7/16 2-9/16 7/8 0.896 0.672 Special Pitch Taps 8-12
32005 32006 -8 5-3/4 2-9/16 1 1.021 0.766
32009 32010 -8 6-1/16 3 1-1/16 1.108 0.831
32013 32014 -8 6-3/8 3 1-1/8 1.233 0.925
32017 32018 -8 6-11/16 3-3/16 1-1/8 1.305 0.979
32021 32022 -8 7 3-3/16 1-1/4 1.430 1.072
32025 32026 -8 7-5/16 3-9/16 1-1/4 1.519 1.139
32029 32030 -8 7-5/8 3-9/16 1-3/8 1.644 1.233
32033 32034 -8 8 3-9/16 1-3/8 1.769 1.327
32037 32038 -8 8-1/4 3-9/16 1-7/16 1.894 1.420
32041 32042 -8 8-1/2 4 1-7/16 2.019 1.514
32045 32046 -8 8-3/4 4 1-1/2 2.100 1.575
32049 32050 -8 8-3/4 4 1-1/2 2.225 1.669
32053 32054 -8 9-1/4 4 1-9/16 2.35 1.762
32057 32058 -8 9-1/4 4 1-9/16 2.475 1.856
32061 32062 -8 9-3/4 4-9/16 1-5/8 2.543 1.907 Special Pitch Taps
32065 32066 -8 9-3/4 4-9/17 1-5/8 2.668 2.001
32069 32070 -8 10 4-9/18 1-3/4 2.793 2.095
32073 32074 -8 10 4-9/19 1-3/4 2.883 2.162
32077 32078 -8 10-1/4 4-15/16 2 3.008 2.256
33001 33002 -12 4 1-1/2 1 1.021 0.672
33005 33006 -12 4 1-1/2 1 1.108 0.766
33013 33014 -12 4 1-1/2 1-1/8 1.305 0.831
33017 33018 -12 5 2 1-1/4 1.430 0.979
33009 33010 -12 5 2 1-1/4 1.519 1.072
33021 33022 -12 5 2 1-3/8 1.644 1.139
33025 33026 -12 5 2 1-3/8 1.769 1.233
33037 33038 -12 5-1/4 2 1-7/16 1.894 1.327
33033 33034 -12 5-1/4 2 1-7/16 2.019 1.420
33045 33046 -12 5-1/4 2 1-1/2 2.100 1.514
33029 33030 -12 5-1/4 2 1-1/2 2.100 1.575
33049 33050 -12 5-1/2 2 1-1/2 2.100 1.575
33041 33042 -12 5-1/2 2 1-1/2 2.100 1.575
33053 33054 -12 5-1/2 2 1-1/2 2.100 1.575
33057 33058 -12 5-1/2 2 1-1/2 2.100 1.575
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Special Long Series Taps

Special Long Series Taps
Inch Size Metric Size Overall Length Thread Length Square Length Shank Diam Square Size
#4 N/A Max TPI Flutes EDP Number A B C D Style View
#4 N/A 2 44008 1-7/8 9/16 3/16 0.141 0.110 Special Long Series Taps
#5 M3 3 44009
#5 M3 2 44010 1-15/16 5/8 3/16 0.141 0.110
#6 M3.5 3 44011
#6 M3.5 2 44012 2 11/16 3/16 0.141 0.110
#8 M4 3 44013
#8 M4 2 44014 2-1/8 3/4 1/4 0.168 0.131
#8 M4 3 44015
#10 M4.5,5 4 44016
#10 M4.5,5 2 44017 2-3/8 7/8 1/4 0.194 0.152
#10 M4.5,5 3 44018
#12 M5.5 4 44019
#12 M5.5 2 44020 2-3/8 15/16 9/32 0.220 0.165
#12 M5.5 3 44021
1/4 M6 4 44022
1/4 M6 64 2 44023 2-1/2 1 5/16 0.255 0.191
1/4 M6 64 3 44024 Special Long Series Taps
5/16 M7,8 64 4 44025
5/16 M7,8 64 2 44026 2-23/32 1-1/8 3/8 0.318 0.238
5/16 M7,8 64 3 44027
3/8 M9 64 4 44028
3/8 M9 64 2 44029 2-15/16 1-1/4 7/16 0.381 0.286
3/8 M9 64 3 44030
7/16 M10,11 64 4 44031
7/16 M10,11 64 3 44032 3-5/32 1-7/16 13/32 0.323 0.242
1/2 M12,13 64 4 44033
1/2 M12,13 64 3 44034 3-3/8 1-21/32 7/16 0.367 0.275
1/2 M12,13 64 4 44035
9/16 M14 64 6 44036
9/16 M14 64 3 44037 3-19/32 1-21/32 1/2 0.429 0.322
9/16 M14 64 4 44038
5/8 M15,16 64 6 44039
5/8 M15,16 64 3 44040 3-13/16 1-13/16 9/16 0.48 0.36
5/8 M15,16 64 4 44041
11/16 M17,18 64 6 44042
11/16 M17,18 64 3 44043 4-1/32 1-13/16 5/8 0.542 0.406
11/16 M17,18 64 4 44044
3/4 M19 64 6 44045
3/4 M19 64 3 44046 4-1/4 2 11/16 0.590 0.442
3/4 M19 64 4 44047
13/16 M20,21 64 6 44048
13/16 M20,21 64 3 44049 4-15/32 2 11/16 0.652 0.489
13/16 M20,21 64 4 44050
7/8 M22 64 6 44051
7/8 M22 64 3 44052 4-11/16 2-7/32 3/4 0.697 0.523 Special Long Series Taps
7/8 M22 64 4 44053
15/16 M23,24 64 6 44054
15/16 M23,24 64 3 44055 4-29/32 2-7/32 3/4 0.760 0.570
15/16 M23,24 64 4 44056
1 M25,26 64 6 44057
1 M25,26 64 3 44058 5-1/8 2-1/2 13/16 0.800 0.600
1 M25,26 64 4 44059
1 1/16 M27 64 6 44060
1 1/16 M27 13 4 44061 5-1/8 2-1/2 7/8 0.896 0.672
1 1/8 M28,29 13 6 44062
1 1/8 M28,29 13 4 44063 5-7/16 2-9/16 7/8 0.896 0.672
1 3/16 M30 13 6 44064
1 3/16 M30 13 4 44065 5-7/16 2-9/16 1 1.021 0.766
1 1/4 M31,32 13 6 44066
1 1/4 M31,32 13 4 44067 5-3/4 2-9/16 1 1.021 0.766
1 5/16 M33,34 13 6 44068
1 5/16 M33,34 13 4 44069 5-3/4 2-9/16 1-1/16 1.108 0.831
1 3/8 M35 13 6 44070
1 3/8 M35 13 4 44071 6-1/16 3 1-1/16 1.108 0.831
1 7/16 M36,37 13 6 44072
1 7/16 M36,37 13 4 44073 6-1/16 3 1-1/8 1.233 0.925 Special Long Series Taps
1 1/2 M38 13 6 44074
1 1/2 M38 13 4 44075 6-3/8 3 1-1/8 1.233 0.925
1 5/8 M40,41 13 6 44076
1 3/4 M44 9 6 44078 6-11/16 3-3/16 1-1/8 1.305 0.979
1 7/8 M47,48 9 6 44080 7 3-3/16 1-1/4 1.430 1.072
2 M49-51 9 6 44082 7-5/16 3-9/16 1-1/4 1.519 1.139
2 1/8 M52-54 9 6 44083 7-5/8 3-9/16 1-3/8 1.644 1.233
2 1/4 M55-58 9 6 44084 8 3-9/16 1-3/8 1.769 1.327
2 3/8 M59-61 9 6 44085 8-1/4 3-9/16 1-7/16 1.894 1.420
2 1/2 M62-64 9 6 44086 8-1/2 4 1-7/16 2.019 1.514
2 5/8 M65-67 9 6 44087 8-3/4 4 1-1/2 2.100 1.575
2 3/4 M68-70 9 6 44088 8-3/4 4 1-1/2 2.225 1.669
2 7/8 M71-74 9 6 44089 9-1/4 4 1-9/16 2.350 1.762
3 M75-77 9 6 44090 9-1/4 4 1-9/16 2.475 1.856
3 M75-77 9 6 44091 9-3/4 4-9/16 1-5/8 2.543 1.907
3 1/8 M78-80 9 8 44092
3 1/4 M81-83 9 8 44093 9-3/4 4-9/16 1-5/8 2.668 2.001
3 3/8 M84-86 9 8 44094 10 4-9/16 1-3/4 2.793 2.095
3 1/2 M87-89 9 8 44095 10 4-9/16 1-3/4 2.883 2.162
3 5/8 M90-92 9 8 44096 10-1/4 4-15/16 2 3.008 2.256
3 3/4 M93-96 9 8 44097 10-1/4 4-15/16 2 3.133 2.350
3 7/8 M97-99 9 8 44098 10-1/2 5-5/16 2-1/8 3.217 2.413
4 M100 9 8 44099 10-1/2 5-5/16 2-1/8 3.342 2.506
9 8 44100 10-3/4 5-5/16 2-1/4 3.467 2.600
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Special Short Series Taps

Special Short Series Taps
SIZE SIZE MAX NO OF EDP DIMENSIONS INCHES
INCHES METRIC TPI FLUTES NUMBER A B C D SQUARE STYLE
1-1/16 M27 55 4 45000 4.00 1.50 0.875 0.896 0.672 Special Short Series Taps style 3
1-1/16 M27 55 6 45001 4.00 1.50 0.875 0.896 0.672
1-1/8 M28,29 55 4 45002 4.00 1.50 0.875 0.896 0.672
1-1/8 M28,29 55 6 45003 4.00 1.50 0.875 0.896 0.672
1-3/16 M30 55 4 45004 4.00 1.50 1.000 1.021 0.766
1-3/16 M30 55 6 45005 4.00 1.50 1.000 1.021 0.766
1-1/4 M31,32 55 4 45006 4.00 1.50 1.000 1.021 0.766
1-1/4 M31,32 55 6 45007 4.00 1.50 1.000 1.021 0.766
1-5/16 M33,34 55 4 45008 4.00 1.50 1.000 1.108 0.831
1-5/16 M33,34 55 6 45009 4.00 1.50 1.000 1.108 0.831
1-3/8 M35 55 4 45010 4.00 1.50 1.000 1.108 0.831
1-3/8 M35 55 6 45011 4.00 1.50 1.000 1.108 0.831
1-7/16 M36,37 55 4 45012 4.00 1.50 1.000 1.233 0.925
1-7/16 M36,37 55 6 45013 4.00 1.50 1.000 1.233 0.925
1-1/2 M38 55 4 45014 4.00 1.50 1.000 1.233 0.925 Special Short Series Taps style 3
1-1/2 M38 55 6 45015 4.00 1.50 1.000 1.233 0.925
1-9/16 M39,40 55 6 45016
1-5/8 M41 55 6 45017 5.00 2.00 1.125 1.305 0.979
1-11/16 M42,43 55 6 45018
1-3/4 M44 55 6 45019 5.00 2.00 1.250 1.43 1.072
1-13/16 M45,46 55 6 45020
1-7/8 M47,48 55 6 45021 5.00 2.00 1.250 1.519 1.139
2 M49-51 47 6 45022 5.00 2.00 1.375 1.644 1.233
2-1/8 M52-54 47 6 45023 5.25 2.00 1.375 1.769 1.327
2-1/4 M55-58 47 6 45024 5.25 2.00 1.438 1.894 1.42
2-3/8 M59-61 47 6 45025 5.25 2.00 1.438 2.019 1.514
2-1/2 M62-64 47 6 45026 5.25 2.00 1.500 2.1 1.575
2-5/8 M65-67 47 6 45027 5.50 2.00 1.500 2.1 1.575 Special Short Series Taps style 3
2-3/4 M68-70 47 6 45028 5.50 2.00 1.500 2.1 1.575
2-7/8 M71-74 47 6 45029 5.50 2.00 1.500 2.1 1.575
3 M75-77 35 6 45030 5.50 2.00 1.500 2.1 1.575
3 M75-77 35 8 45031
3-1/8 M78-80 35 8 45032 5.75 2.00 1.500 2.1 1.575
3-1/4 M81-83 35 8 45033 5.75 2.00 1.500 2.1 1.575
3-3/8 M84-86 35 8 45034 5.75 2.00 1.500 2.1 1.575
3-1/2 M87-89 35 8 45035 5.75 2.00 1.500 2.1 1.575
3-5/8 M90-92 35 8 45036 6.00 2.00 1.500 2.1 1.575
3-3/4 M93-96 35 8 45037 6.00 2.00 1.500 2.1 1.575
3-7/8 M97-99 35 8 45038 6.00 2.00 1.500 2.1 1.575
4 M100 35 8 45039 6.00 2.00 1.750 2.1 1.575
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Popular Special Solid Carbide Taps

Popular Special Solid Carbide Taps
EDP NUMBER Thread Overall Thread Square Shank Square
Taper Plug Bottom Pitch Length Length Length Diam Size Style
A B C D
38018 -18 2.4375 1.0625 .4375 .5625 .421 Popular Special Solid Carbide Taps Style 2
38242 38243 38244 -20 2.5 1 .3125 0.255 0.191
38233 -20
38245 38246 38247 -28 2.5 1 .3125 0.255 0.191
38234 -28
38248 38249 38250 -18 2.71875 1.125 .375 0.318 0.238
38235 -28
38251 38252 38253 -24 2.71875 1.125 .375 0.318 0.238
38236 -24
38254 38255 38256 -16 2.9375 1.25 .4375 0.381 0.286
38237 -26
38257 38258 38259 -24 2.9375 1.25 .4375 0.381 0.286
38238 -24
38284 38285 38286 X1 2.5 1 .3125 0.255 0.191
38287 X1
38288 38289 38290 X1 2.71875 1.125 .375 0.318 0.238
38291 X1
38292 38293 38294 X1.25 2.71875 1.125 .375 0.318 0.238 Popular Special Solid Carbide Taps Style 3
38295 X1.25
38296 38297 38298 X1
38299 X1
38300 38301 38302 X1.5 2.9375 1.25 .4375 0.381 0.286
38303 X1.5
38260 38261 38262 -14 3.15625 1.4375 .40625 0.323 0.242
38239 -14
38263 38264 382665 -20 3.15625 1.4375 .40625 0.323 0.242
38240 -20
38266 38267 38268 -13 3.375 1.65625 .4375 0.367 0.275
38269 38270 38271 -20
38272 38273 38274 -12 3.59375 1.65625 .5 0.429 0.322
38275 38276 38277 -18
38278 38279 38280 -11 3.8125 1.8125 .375 0.480 0.360
38281 38282 38283 -18
38304 38305 38306 X1.75 3.375 1.65625 .4375 0.367 0.275
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Special Forming Taps

Special Forming Taps
Right or Left Hand EDP Overall Thread Square Shank Square without flutes
Size Size Number Length Length Length Diam Size Style
Inches Metric A B C D Special Forming Taps
#5 M3 30000 1.9375 .625 .1875 0.141 0.110
#6 M3.5 30001 2 .6875 .1875 0.141 0.110
#8 M4 30002 2.125 .75 .25 0.168 0.131
#10 M4.5,5 30003 2.375 .875 .25 0.194 0.152
#12 M5.5 30004 2.375 .9375 .28125 0.220 0.165
1/4 M6 30005 2.5 1 .3125 0.255 0.191
5/16 M7, M8 30006 2.71875 1.125 .375 0.318 0.238
3/8 M9 30007 2.9375 1.25 .4375 0.381 0.286
7/16 M10,11 30008 3.15625 1.4375 .40625 0.323 0.242
1/2 M12,13 30009 3.375 1.65625 .4375 0.367 0.275
9/16 M14 30010 3.59375 1.65625 .5 0.429 0.322
5/8 M15,16 30011 3.8125 1.8125 .5625 0.480 0.36
3/4 M19 30012 4.25 2 .6875 0.590 0.442
7/8 M22,23 30013 4.6875 2.21875 .75 0.697 0.523
1 M25,26 30014 5.125 2.5 .8125 0.800 0.600
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Special ACME HSS Taps - Right or Left Hand

Special ACME HSS Taps - Right or Left Hand
EDP Overall  Thread Square Shank Square 
Size Flutes Number Length Length Length Diam Size Style
A B C D
1/4 4 37225 2-1/2 1 5/16 0.255 0.191 Special ACME HSS Taps - Right or Left Hand
5/16 4 37228 2-23/32 1-1/8 3/8 0.318 0.238
3/8 4 37231 2-15/16 1-1/4 7/16 0.381 0.286
7/16 4 37233 3-5/32 1-7/16 13/32 0.323 0.242
1/2 4 37235 3-3/8 1-21/32 7/16 0.367 0.275
9/16 4 37238 3-19/32 1-21/32 1/2 0.429 0.322
5/8 4 37241 3-13/16 1-13/16 9/16 0.48 0.360
11/16 4 37244 4-1/32 1-13/16 5/8 0.542 0.406
3/4 4 37247 4-1/4 2 11/16 0.59 0.442
13/16 4 37250 4-15/32 2 11/16 0.652 0.489
7/8 4 37253 4-11/16 2-7/32 3/4 0.697 0.523
15/16 4 37256 4-29/32 2-7/32 3/4 0.760 0.57
1 4 37259 5-1/8 2-1/2 13/16 0.800 0.600
1-1/8 4 37263 5-7/16 2-9/16 7/8 0.896 0.672
1-1/4 4 37267 5-3/4 2-9/16 1 1.021 0.766
1-3/8 4 37271 6-1/16 3 1-1/16 1.108 0.831
1-1/2 4 37275 6-3/8 3 1-1/8 1.233 0.925
1-1/2 6 37276 6-3/8 3 1-1/8 1.233 0.925
*Standard threads per inch shown to allow us to give standard dimensions. We will make these taps to your specifications!
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Special Straight Flute Tandem Taps

Special Straight Flute Tandem Taps
GENERAL DIMENSIONS FOR ACME TANDEM TAPS             Max Depth
EDP Overall Thread         Round Shank Square Across Bronze & Brass &
Size Flutes Number Length Length Length Diameter Length Flats Steel Cast Iron
1/4 4 37159
5/16 4 37200
3/8 4 37157
7/16 4 37158
1/2 4 37141 5 2-9/16 2 0.367 7/16 0.275 1 1-1/2
9/16 4 37142
5/8 4 37143 6-1/4 3-3/16 2-1/2 0.480 9/16 0.360 1-1/4 1-7/8
11/16 4 37144
3/4 4 37145 7-15/16 4-5/16 3 0.573 5/8 0.430 1-1/2 2-1/4
13/16 4 37146
7/8 4 37147 8-5/8 4-3/8 3 1/2 0.697 3/4 0.523 1-3/4 2-5/8
15/16 4 37148
1 4 37149 10-1/8 5-1/4 4 0.730 7/8 0.547 2 3
1-1/8 4 37150 10-3/4 5-1/4 4-1/2 0.862 1 0.646 2-1/4 3-3/8
1-1/4 4 37151 11-1/8 5-1/4 4-3/4 0.959 1-1/8 0.719 2-1/2 3-3/4
1-3/8 4 37152 12-1/4 5-7/8 5-1/8 1.108 1-1/4 0.831 2-3/4 4-1/8
1-1/2 4 37153 12-5/8 5-7/8 5-1/2 1.233 1-1/4 0.925 3 4-1/2
1-5/8 6 37154
1-3/4 37155
1-7/8 37182
2 37156
2-1/4 37160
2-1/12 37161
3 37162
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Special Spiral Flute Tandem Taps

Special Spiral Flute Tandem Taps
GENERAL DIMENSIONS FOR ACME TANDEM TAPS             Max Depth
RH Cut LH Cut Overall Thread         Round Shank Square Across Bronze & Brass &
Size Flutes LH Spiral RH Spiral Length Length Length Diameter Length Flats Steel Cast Iron
EDP EDP
1/2 4 37166 37206 5 2-9/16 2 0.367 7/16 0.275 1 1-1/2
9/16 4 37167 37207
5/8 4 37168 37208 6-1/4 3-3/16 2-1/2 0.480 9/16 0.360 1-1/4 1-7/8
11/16 4 37169 37209
3/4 4 37170 37210 7-15/16 4-5/16 3 0.573 5/8 0.430 1-1/2 2-1/4
13/16 4 37171 37211
7/8 4 37172 37212 8-5/8 4-3/8 3-1/2 0.697 3/4 0.523 1-3/4 2-5/8
15/16 4 37173 37213
1 4 37174 37214 10-1/8 5-1/4 4 0.730 7/8 0.547 2 3
1-1/8 4 37175 37215 10-3/4 5-1/4 4-1/2 0.862 1 0.646 2-1/4 3-3/8
1-1/4 4 37176 37216 11-1/8 5-1/4 4-3/4 0.959 1-1/8 0.719 2-1/2 3-3/4
1-3/8 4 37177 37217 12-1/4 5-7/8 5-1/8 1.108 1-1/4 0.831 2-3/4 4-1/8
1-1/2 4 37178 37218 12-5/8 5-7/8 5-1/2 1.233 1-1/4 0.925 3 4-1/2
1-5/8 6 37179 37219
1-3/4 37180 37220
2 37181 37221
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Popular Special Screw Thread Insert Taps - Standard NC & NF

            EDP Number             EDP Number             EDP Number
Description Plug Bottom Description Plug Bottom Description Plug Bottom
#2-56 H1 3FL STI TAP 31011 31012 1/4-20 H2 3FL STI TAP 31067 31068 3/4-10 H3 4FL STI TAP 31123 31124
#2-56 H2 3FL STI TAP 31013 31014 1/4-20 H3 3FL STI TAP 31069 31070 3/4-10 H4 4FL STI TAP 31125 31126
#3-48 H1 3FL STI TAP 31015 31016 1/4-28 H2 3FL STI TAP 31071 31072 3/4-16 H3 4FL STI TAP 31127 31128
#3-48 H2 3FL STI TAP 31017 31018 1/4-28 H3 3FL STI TAP 31073 31074 3/4-16 H4 4FL STI TAP 31129 31130
#3-56 H1 3FL STI TAP 31019 31020 5/16-18 H3 4FL STI TAP 31075 31076 7/8-9 H3 4FL STI TAP 31131 31132
#3-56 H2 3FL STI TAP 31021 31022 5/16-18 H4 4FL STI TAP 31077 31078 7/8-9 H5 4FL STI TAP 31133 31134
#4-40 H1 3FL STI TAP 31023 31024 5/16-24 H2 4FL STI TAP 31079 31080 7/8-14 H3 4FL STI TAP 31135 31136
#4-40 H2 3FL STI TAP 31025 31026 5/16-24 H3 4FL STI TAP 31081 31082 7/8-14 H4 4FL STI TAP 31137 31138
#4-48 H1 3FL STI TAP 31027 31028 3/8-16 H3 4FL STI TAP 31083 31084 1-8 H3 4FL STI TAP 31139 31140
#4-48 H2 3FL STI TAP 31029 31030 3/8-16 H4 4FL STI TAP 31085 31086 1-8 H4 4FL STI TAP 31141 31142
#5-40 H1 3FL STI TAP 31031 31032 3/8-24 H2 4FL STI TAP 31087 31088 1-8 H6 4FL STI TAP 31143 31144
#5-40 H2 3FL STI TAP 31033 31034 3/8-24 H3 4FL STI TAP 31089 31090 1-12 H4 4FL STI TAP 31145 31146
#6-32 H2 3FL STI TAP 31035 31036 7/16-14 H3 4FL STI TAP 31091 31092 1-12 H6 4FL STI TAP 31147 31148
#6-32 H3 3FL STI TAP 31037 31038 7/16-14 H4 4FL STI TAP 31093 31094 1-14 H3 4FL STI TAP 31149 31150
#6-40 H1 3FL STI TAP 31039 31040 7/16-20 H3 4FL STI TAP 31095 31096 1-14 H4 4FL STI TAP 31151 31152
#6-40 H2 3FL STI TAP 31041 31042 7/16-20 H4 4FL STI TAP 31097 31098 1-14 H6 4FL STI TAP 31153 31154
#8-32 H1 3FL STI TAP 31043 31044 1/2-13 H3 4FL STI TAP 31099 31100 1 1/8-7 H4 4FL STI TAP 31155 31156
#8-32 H2 3FL STI TAP 31045 31046 1/2-13 H4 4FL STI TAP 31101 31102 1 1/8-7 H6 4FL STI TAP 31157 31158
#8-32 H3 3FL STI TAP 31047 31048 1/2-20 H3 4FL STI TAP 31103 31104 1 1/8-12 H4 6FL STI TAP 31159 31160
#8-36 H1 3FL STI TAP 31049 31050 1/2-20 H4 4FL STI TAP 31105 31106 1 1/8-12 H6 6FL STI TAP 31161 31162
#8-36 H2 3FL STI TAP 31051 31052 9/16-12 H3 4FL STI TAP 31107 31108 1 1/4-7 H4 4FL STI TAP 31163 31164
#8-36 H3 3FL STI TAP 31053 31054 9/16-12 H4 4FL STI TAP 31109 31110 1 1/4-7 H6 4FL STI TAP 31165 31166
#10-24 H2 3FL STI TAP 31055 31056 9/16-18 H3 4FL STI TAP 31111 31112 1 1/4-12 H4 6FL STI TAP 31167 31168
#10-24 H3 3FL STI TAP 31057 31058 9/16-18 H4 4FL STI TAP 31113 31114 1 1/4-12 H6 6FL STI TAP 31169 31170
#10-32 H2 3FL STI TAP 31059 31060 5/8-11 H3 4FL STI TAP 31115 31116 1 3/8-6 H6 6FL STI TAP 31173 31174
#10-32 H3 3FL STI TAP 31061 31062 5/8-11 H4 4FL STI TAP 31117 31118 1 3/8-6 H7 6FL STI TAP 31175 31176
#12-24 H2 3FL STI TAP 31063 31064 5/8-18 H3 4FL STI TAP 31119 31120 1 1/2-6 H6 6FL STI TAP 31179 31180
#12-24 H3 3FL STI TAP 31065 31066 5/8-18 H4 4FL STI TAP 31121 31122 1 1/2-6 H7 6FL STI TAP 31181 31182
1 1/2-12 H4 6FL STI TAP 31183 31184
1 1/2-12 H6 6FL STI TAP 31185 31186
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Popular Special Screw Thread Insert Taps - Spiral Point

EDP  EDP 
Description Plug Description Plug
#2-56 H1 2FL STI SPPT TAP 31187 1/4-20 H2 3FL STI SPPT TAP 31214
#2-56 H2 2FL STI SPPT TAP 31188 1/4-20 H3 3FL STI SPPT TAP 31215
#3-48 H1 2FL STI SPPT TAP 31189 1/4-28 H2 3FL STI SPPT TAP 31216
#3-48 H2 2FL STI SPPT TAP 31190 1/4-28 H3 3FL STI SPPT TAP 31217
#3-56 H1 2FL STI SPPT TAP 31191 5/16-18 H3 3FL STI SPPT TAP 31218
#3-56 H2 2FL STI SPPT TAP 31192 5/16-18 H4 3FL STI SPPT TAP 31219
#4-40 H1 2FL STI SPPT TAP 31193 5/16-24 H2 3FL STI SPPT TAP 31220
#4-40 H2 2FL STI SPPT TAP 31194 5/16-24 H3 3FL STI SPPT TAP 31221
#4-48 H1 2FL STI SPPT TAP 31195 3/8-16 H3 3FL STI SPPT TAP 31222
#4-48 H2 2FL STI SPPT TAP 31196 3/8-16 H4 3FL STI SPPT TAP 31223
#5-40 H1 2FL STI SPPT TAP 31197 3/8-24 H2 3FL STI SPPT TAP 31224
#5-40 H2 2FL STI SPPT TAP 31198 3/8-24 H3 3FL STI SPPT TAP 31225
#6-32 H2 2FL STI SPPT TAP 31199 7/16-14 H3 3FL STI SPPT TAP 31226
#6-32 H3 2FL STI SPPT TAP 31200 7/16-14 H4 3FL STI SPPT TAP 31227
#6-40 H1 2FL STI SPPT TAP 31201 7/16-20 H3 3FL STI SPPT TAP 31228
#6-40 H2 2FL STI SPPT TAP 31202 7/16-20 H4 3FL STI SPPT TAP 31229
#8-32 H2 2FL STI SPPT TAP 31203 1/2-13 H3 3FL STI SPPT TAP 31230
#8-32 H3 2FL STI SPPT TAP 31204 1/2-13 H4 3FL STI SPPT TAP 31231
#8-36 H1 2FL STI SPPT TAP 31205 1/2-20 H3 3FL STI SPPT TAP 31232
#8-36 H2 2FL STI SPPT TAP 31206 1/2-20 H4 3FL STI SPPT TAP 31233
#8-36 H3 2FL STI SPPT TAP 31207
#10-24 H2 2FL STI SPPT TAP 31208
#10-24 H3 2FL STI SPPT TAP 31209
#10-32 H2 2FL STI SPPT TAP 31210
#10-32 H3 2FL STI SPPT TAP 31211
#12-24 H2 2FL STI SPPT TAP 31212
#12-24 H3 2FL STI SPPT TAP 31213
Return to Special Taps

Special Nut Taps HSS Right or Left Hand

Overall  EDP
Size Length Flutes Number
1/4 5 4 52000
5/16 5-1/2 4 52001
3/8 6 4 52002
7/16 6-1/2 4 52003
1/2 7 4 52004
9/16 7-1/2 4 52005
5/8 8 4 52006
11/16 8-1/2 4 52007
3/4 9 4 52008
7/8 10 4 52009
1 11 4 52010
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Table 306 - Nut Taps

                  Thread Per Inch Dimensions - Inches
NS or Length Diameter Size
Diameter UNC UNF UN Overall Thread Square Shank Square
A B C D E
1/16 24 4-1/2 1-3/8 1/2 0.133 0.100
1/16 32 4-1/2 1 1/2 0.133 0.100
1/4 20 5 1-5/8 9/16 0.185 0.139
1/4 28 5 1-1/4 9/16 0.185 0.139
5/16 18 5-1/2 1-13/16 5/8 0.240 0.180
5/16 24 5-1/2 1-3/8 5/8 0.240 0.180
3/8 16 6 2 11/16 0.294 0.220
3/8 24 6 1-1/2 11/16 0.294 0.220
7/16 14 6-1/2 2-3/8 3/4 0.345 0.259
7/16 20 6-1/2 1-3/4 3/4 0.345 0.259
1/2 13 7 2-1/2 7/8 0.400 0.300
1/2 20 7 1-7/8 7/8 0.400 0.300
9/16 12 7-1/2 2-3/4 7/8 0.450 0.337
9/16 18 7-1/2 2 7/8 0.450 0.337
5/8 11 8 3 15/16 0.503 0.377
5/8 18 8 2-1/4 15/16 0.503 0.377
11/16 11 8-1/2 3 1 0.565 0.424
11/16 16 8-1/2 2-1/4 1 0.565 0.424
3/4 10 9 3-1/4 1 0.616 0.462
3/4 16 9 2-1/2 1 0.616 0.462
7/8 9 10 3-5/8 1-1/16 0.727 0.545
7/8 14 10 2-3/4 1-1/16 0.727 0.545
7/8 18 10 2-3/4 1-1/16 0.727 0.545
1 8 11 4 1-1/8 0.834 0.625
1 12 11 3-1/2 1-1/8 0.834 0.625
1 14 11 3 1-1/8 0.834 0.625
1-1/8 7 11-1/2 4-3/4 1-1/4 0.933 0.700
1-1/8 12 11-1/2 3-1/2 1-1/4 0.933 0.700
1-1/4 7 12 4-3/4 1-5/16 1.058 0.793
1-1/4 12 12 3-1/2 1-5/16 1.058 0.793
1-5/8 6 12-1/2 5-3/8 1-3/8 1.153 0.865
1-5/8 12 12-1/2 4 1-3/8 1.153 0.865
1-1/2 6 13 5-3/8 1-1/2 1.278 0.958
1-1/2 12 13 4 1-1/2 1.278 0.958
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Special Spiral Flute - HSS - Right Hand Only

Special Spiral Flute - HSS - Right Hand Only
                Flutes            EDP Number Thread Shank  Square 
Size Max Metric SLOW FAST SLOW FAST Overall Length Square Diam Size Style
A B C D
#4 80 2 3 61003 60008 1-7/8 9/16 3/16 0.141 0.110 Special Spiral Flute - HSS - Right Hand Only
#5 80 M3 2 3 61001 60009 1-15/16 5/8 3/16 0.141 0.110
#6 80 M3.5 2 3 61000 60001 2 11/16 3/16 0.141 0.110
#8 80 M4 2 3 61002 60003 2-1/8 3/4 1/4 0.168 0.131
#10 80 M4.5,5 2 3 61004 60005 2-3/8 7/8 1/4 0.194 0.152
#12 80 M5.5 2 3 61006 60007 2-3/8 15/16 9/32 0.220 0.165
#14 80 2 3 61008 2-1/2 1 9/32 0.247 0.185
1/4 80 M6 2 3 61010 60011 2-1/2 1 5/16 0.255 0.191
5/16 80 M7,8 3 3 61012 60013 2-23/32 1-1/8 3/8 0.318 0.238
3/8 80 M9 3 3 61014 60015 2-15/16 1-1/4 7/16 0.381 0.286
7/16 80 M10,11 3 4 61016 60017 3-5/32 1-7/16 13/32 0.323 0.242
1/2 80 M12,13 3 4 61018 60019 3-3/8 1-21/32 7/16 0.367 0.275
9/16 64 M14 3 4 61020 60021 3-19/32 1-21/32 1/2 0.429 0.322
5/8 64 M15,16 4 4 61022 60023 3-13/16 1-13/16 9/16 0.480 0.360
11/16 64 4 4 61023 60022 4-1/32 1-13/16 5/8 0.542 0.406
3/4 64 M19 4 4 61024 60025 4-1/4 2 11/16 0.590 0.442
13/16 64 M20,21 4 4 61025 60026 4-15/32 2 11/16 0.652 0.489
7/8 64 M22 4 4 61026 60028 4-11/16 2-7/32 3/4 0.697 0.523
15/16 64 M23,24 4 4 61028 60031 4-29/32 2-7/32 3/4 0.76 0.570
1 64 M25,26 4 4 61030 60032 5-1/8 2-1/2 13/16 0.800 0.600
Spiral Flute Blanks are up to 3" - Fast or Slow in Stock
Please consult sales for pricing
Slow Spiral Taps have a 30° Helix       Fast Spiral Taps have a 52° Helix
             Slow Spiral - 30° spiral in plug or bottom Fast Spiral - 52° spiral in bottoming only
           Slow spiral will provide a lifting action for chip removal in deep holes.
             Fast spiral will provide a greater lift action when tapping a deep or blind hole in soft steels.
          WE STOCK THE LARGEST SPIRAL FLUTE TAPS IN THE WORLD
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Pipe Taps, High Speed Steel

Pipe Taps test
Threads Nom. NPT Drill NPT Drill
No. Of EDP EDP Overall Thread Square Shank Size of Per  OD NPS Drill Size Size w/o
Size Flutes NPS NPT Length Length Length Dim. Square Inch* Inch* Size w/reamer reamer
1/16 4 62000 62001 2-1/8 11/16 3/8 0.3125 0.234 27 0.313 1/4 15/64 C
1/16 4 62002 62003 2-1/8 11/16 5/16 0.2550 0.191 27 0.313
1/8 4 62004 62005 2-1/8 3/4 3/8 0.4375 0.328 27 0.405 11/32 21/64 Q
1/8 4 62006 62007 2-1/8 3/4 3/8 0.3125 0.234 27 0.405
1/4 4 62008 62009 2-7/16 1-1/16 7/16 0.5625 0.421 18 0.540 7/16 27/64 7/16
3/8 4 62010 62011 2-9/16 1-1/16 1/2 0.7000 0.531 18 0.675 19/32 9/16 37/64
1/2 4 62012 62013 3-1/8 1-3/8 5/8 0.6875 0.515 14 0.840 23/32 11/16 45/64
3/4 5 62014 62015 3-1/4 1-3/8 11/16 0.9063 0.679 14 1.050 15/16 57/64 29/32
1 5 62016 62017 3-3/4 1-3/4 13/16 1.1250 0.843 11-1/2 1.315 1-5/32 1-1/8 1-9/32
1-1/4 5 62018 62019 4 1-3/4 15/16 1.3125 0.984 11-1/2 1.660 1-1/2 1-15/16 1-31/64
1-1/2 7 62020 62021 4-1/4 1-3/4 1 1.5000 1.125 11-1/2 1.900 1-3/4 1-23/32 1-23/32
2 7 62022 62023 4-1/2 1-3/4 1-1/8 1.8750 1.406 11-1/2 2.375 2-3/16 2-5/32 2-3/16
2-1/2 7 62024 62025 5-1/2 2-9/16 1-1/4 2.2500 1.687 8 2.875 2-5/8 2-25/32 2-5/8
3 8 62026 62027 6 2-5/8 1-3/8 2.6250 1.968 8 3.500 3-1/4 3-9/32 3-1/4
3-1/2 8 62028 62029 6-1/2 2-11/16 1-1/2 2.8125 2.108 8 4.000 3-3/4 3-3/4 3-3/4
4 10 62030 62031 6-3/4 2-3/4 1-5/8 3.0000 2.250 8 4.500 4-1/4 4-1/4 4-1/4
5 10 62034 62035 8 5.563 5-5/16 5-1/4 5-9/32
6 10 62036 62037 8 6.625 6-3/8 6-1/4 6-11/32
*Standard Threads Per Inch are shown to allow drill size dimensions. We will make these taps and any dies to your specifications.
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Special Extension Taps - HSS Right or Left Hand

Special Extension Taps - HSS Right or Left Hand
Overall EDP Number   Overall EDP Number
Size Length Flutes Pulley Extension S/Shank   Size Length Flutes Pulley Extension S/Shank
1/4 6 2 59030 56120 56123   13/16 10 3 56266
1/4 6 3 59031 56121 56124   13/16 10 4 56267
1/4 6 4 59032 56122 56125   13/16 10 6 56268
1/4 8 2 59033 56126 56129   13/16 12 3 56269
1/4 8 3 59034 56127 56130   13/16 12 4 56270
1/4 8 4 59035 56128 56131   13/16 12 6 56271
1/4 10 2 56132 56135   7/8 6 3 59088 56272
1/4 10 3 56133 56136   7/8 6 4 59089 56273
1/4 10 4 56134 56137   7/8 6 6 59090 56274
1/4 12 2 56138 56141   7/8 8 3 59091 56275
1/4 12 3 56139 56142   7/8 8 4 59092 56276
1/4 12 4 56140 56143   7/8 8 6 59093 56277
5/16 6 2 59036 56144 56147   7/8 10 3 56278
5/16 6 3 59037 56145 56148   7/8 10 4 56279
5/16 6 4 59038 56146 56149   7/8 10 6 56280
5/16 8 2 59039 56150 56153   7/8 12 3 56281
5/16 8 3 59040 56151 56154   7/8 12 4 56282
5/16 8 4 59041 56152 56155   7/8 12 6 56283
5/16 10 2 56156 56159   15/16 6 3 59094 56284
5/16 10 3 56157 56160   15/16 6 4 59095 56285
5/16 10 4 56158 56161   15/16 6 6 59096 56286
5/16 12 2 56162 56165   15/16 8 3 59097 56287
5/16 12 3 56163 56166   15/16 8 4 59098 56288
5/16 12 4 56164 56167   15/16 8 6 59099 56289
3/8 6 2 59042 56345 56346   15/16 10 3 56290
3/8 6 3 59043 56168 56170   15/16 10 4 56291
3/8 6 4 59044 56169 56171   15/16 10 6 56292
3/8 8 2 59045 56347 56348   15/16 12 3 56293
3/8 8 3 59046 56172 56174   15/16 12 4 56294
3/8 8 4 59047 56173 56175   15/16 12 6 56295
3/8 10 3 56176 56178   1 6 3 59100 56296
3/8 10 4 56177 56179   1 6 4 59101 56297
3/8 12 3 56180 56182   1 6 6 59102 56298
3/8 12 4 56180 56183   1 8 3 59103 56299
7/16 6 3 59048 56184   1 8 4 59104 56300
7/16 6 4 59049 56185   1 8 6 59105 56301
7/16 8 3 59050 56188   1 10 3 56302
7/16 8 4 59051 56189   1 10 4 56303
7/16 10 3 56190   1 10 6 56304
7/16 10 4 56191   1 12 3 56305
7/16 12 3 56192   1 12 4 56306
7/16 12 4 56193   1 12 6 56307
1/2 6 3 59052 56194   1-1/8 8 4 56308
1/2 6 4 59053 56195   1-1/8 8 6 56309
1/2 6 6 59054 56196   1-1/8 10 4 56310
1/2 8 3 59055 56200   1-1/8 10 6 56311
1/2 8 4 59056 56201   1-1/8 12 4 56312
1/2 8 6 59057 56202   1-1/8 12 6 56313
1/2 10 3 56203   1-1/4 8 4 56314
1/2 10 4 56204   1-1/4 8 6 56315
1/2 10 6 56205   1-1/4 10 4 56316
1/2 12 3 56206   1-1/4 10 6 56317
1/2 12 4 56207   1-1/4 12 4 56318
1/2 12 6 56208   1-1/4 12 6 56319
Overall EDP Number   Overall EDP Number
Size Length Flutes Pulley Extension S/Shank   Size Length Flutes Pulley Extension S/Shank
9/16 6 3 59058 56209   1-3/8 8 4 56320
9/16 6 4 59059 56210   1-3/8 8 6 56321
9/16 6 6 59060 56211   1-3/8 10 4 56322
9/16 8 3 59061 56212   1-3/8 10 6 56323
9/16 8 4 59062 56213   1-3/8 12 4 56324
9/16 8 6 59063 56214   1-3/8 12 6 56325
9/16 10 3 56215   1-1/2 8 4 56326
9/16 10 4 56216   1-1/2 8 6 56327
9/16 10 6 56217   1-1/2 10 4 56328
9/16 12 3 56218   1-1/2 10 6 56329
9/16 12 4 56219   1-1/2 12 4 56330
9/16 12 6 56220   1-1/2 12 6 56331
5/8 6 3 59064 56221   1-5/8 8 6 56332
5/8 6 4 59065 56222   1-5/8 10 6 56333
5/8 6 6 59066 56223   1-5/8 12 6 56334
5/8 8 3 59067 56227   1-3/4 8 6 56335
5/8 8 4 59068 56228   1-3/4 10 6 56336
5/8 8 6 59069 56229   1-3/4 12 6 56337
5/8 10 3 56230   1-7/8 10 6 56338
5/8 10 4 56231   1-7/8 12 6 56339
5/8 10 6 56232   2 10 6 56340
5/8 12 3 56233   2 12 6 56341
5/8 12 4 56234  
5/8 12 6 56235  
11/16 6 3 59070 56236  
11/16 6 4 59071 56237  
11/16 6 6 59072 56238  
11/16 8 3 59073 56239  
11/16 8 4 59074 56240  
11/16 8 6 59075 56241  
11/16 10 3 56242  
11/16 10 4 56243  
11/16 10 6 56244  
11/16 12 3 56245  
11/16 12 4 56246  
11/16 12 6 56247  
3/4 6 3 59076 56248  
3/4 6 4 59077 56249  
3/4 6 6 59078 56250  
3/4 8 3 59079 56251  
3/4 8 4 59080 56252  
3/4 8 6 59081 56253  
3/4 10 3 56254  
3/4 10 4 56255  
3/4 10 6 56256  
3/4 12 3 56257  
3/4 12 4 56258  
3/4 12 6 56259  
13/16 6 3 59082 56260  
13/16 6 4 59083 56261  
13/16 6 6 59084 56262  
13/16 8 3 59085 56263  
13/16 8 4 59086 56264  
13/16 8 6 59087 56265  
Return to Special Taps

Special Extension Pipe Taps - HSS Right or Left Hand

Pipe Taps - HSS Right or Left Hand
Overall           EDP Number
Size Flutes Length NPT NPS
1/16 4 6 57000 57001
1/16 4 8 57002 57003
1/16 4 10 57004 57005
1/16 4 12 57006 57007
1/8 4 6 57008 57009
1/8 4 8 57010 57011
1/8 4 10 57012 57013
1/8 4 12 57014 57015
1/8 4 6 57072 57073
1/8 4 8 57074 57075
1/8 4 10 57076 57077
1/8 4 12 57078 57079
1/4 4 6 57016 57017
1/4 4 8 57018 57019
1/4 4 10 57020 57021
1/4 4 12 57022 57023
3/8 4 6 57024 57025
3/8 4 8 57026 57027
3/8 4 10 57028 57029
3/8 4 12 57030 57031
1/2 4 6 57032 57033
1/2 4 8 57034 57035
1/2 4 10 57036 57037
1/2 4 12 57038 57039
3/4 5 6 57040 57041
3/4 5 8 57042 57043
3/4 5 10 57044 57045
3/4 5 12 57046 57047
1 5 6 57048 57049
1 5 8 57050 57051
1 5 10 57052 57053
1 5 12 57054 57055
1-1/4 5 6 57056 57057
1-1/4 5 8 57058 57059
1-1/4 5 10 57060 57061
1-1/4 5 12 57062 57063
1-1/2 7 6 57064 57065
1-1/2 7 8 57066 57067
1-1/2 7 10 57068 57069
1-1/2 7 12 57070 57071

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