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Special Thread Taps over 1-1/8

HSS Special Pitch Taps, 1-3/16 to 4 inch

Special Pitch Thread-Cutting Taps.
For cutting "Special" Unified Thread Standard (a.k.a.: Imperial / "Inch" / SAE) threads.
'Special Pitch' sizes are any UTS sizes that are NOT the "National Course/ National Fine" standards.
High Speed Steel, Ground Thread.
Plug-chamfered taps will be provided where available, but Taper or Bottoming taps may be shipped, depending on our stock.

The following larger sizes are usually available as well:
4-1/4"-8 or 12 tpi; 4-1/2"-8 or 12; 4-3/4"-8 or 12; 5"-8 or 12.
Email us for price and availability of these sizes.

To determine the proper drill size for 75% thread on a special pitch tap use the following formula:
Major Diameter minus (0.975 divided by the number of threads-per-inch) = "Theoretical Ideal" Drill Size.
For example, for a 1/4" - 32 tpi tap:
0.250" - (0.975/32) = Drill Size
0.250" - (.0305) = 0.2195"
Now consult a drill chart (there is a "Metalworking Reference" link on the left) and find the nearest size drill that actually exists, etc.
For 0.2195", you'd probably want to choose 7/32" or #2 drill size.
Quantity Price Model Description Size Threads Per Inch

$73.70 TAST-1-3/16-7
1-3/16"-7 HSS Special Tap 1-3/16" 7

$73.70 TAST-1-3/16-8
1-3/16"-8 HSS Special Tap, 0307-0180 1-3/16" 8

$73.70 TAST-1-3/16-10
1-3/16"-10 HSS Special Tap, 0307-0185 1-3/16" 10

$73.70 TAST-1-3/16-12
1-3/16"-12 HSS Special Tap, 0307-0190 1-3/16" 12

$73.70 TAST-1-3/16-14
1-3/16"-14 HSS Special Tap, 0307-1815 1-3/16" 14

$73.70 TAST-1-3/16-16
1-3/16"-16 HSS Special Tap, 0307-0195 1-3/16" 16

$73.70 TAST-1-3/16-18
1-3/16"-18 HSS Special Tap - NEF, 0307-0198 1-3/16" 18

$73.70 TAST-1-3/16-20
1-3/16"-20 HSS Special Tap, 0307-0200 1-3/16" 20

$73.70 TAST-1-3/16-24
1-3/16"-24 HSS Special Tap, 0307-0202 1-3/16" 24

$73.70 TAST-1-3/16-27
1-3/16"-27 HSS Special Tap, 0307-0203 1-3/16" 27

$73.70 TAST-1-3/16-32
1-3/16"-32 HSS Special Tap, 0307-0204 1-3/16" 32

$71.40 TAST-1-1/4-8
1-1/4"-8 HSS Special Tap, 0307-0205 1-1/4" 8

$71.40 TAST-1-1/4-10
1-1/4"-10 HSS Special Tap, 0307-0206 1-1/4" 10

$71.40 TAST-1-1/4-14
1-1/4"-14 HSS Special Tap, 0307-0217 1-1/4" 14

$71.40 TAST-1-1/4-16
1-1/4"-16 HSS Special Tap, 0307-0215 1-1/4" 16

$71.40 TAST-1-1/4-18
1-1/4"-18 HSS Special Tap - NEF, 0307-0216 1-1/4" 18

$71.40 TAST-1-1/4-20
1-1/4"-20 HSS Special Tap, 0307-0218 1-1/4" 20

$71.40 TAST-1-1/4-24
1-1/4"-24 HSS Special Tap, 0307-0219 1-1/4" 24

$71.40 TAST-1-1/4-26
1-1/4"-26 HSS Special Tap, 0307-1835 1-1/4" 26

$71.40 TAST-1-1/4-27
1-1/4"-27 HSS Special Tap, 0307-1840 1-1/4" 27

$71.40 TAST-1-1/4-28
1-1/4"-28 HSS Special Tap, 0307-1845 1-1/4" 28

$71.40 TAST-1-1/4-32
1-1/4"-32 HSS Special Tap, 0307-1850 1-1/4" 32
Out of stock
$78.00 TAST-1-1/4-36
1-1/4"-36 HSS Special Tap 1-1/4" 36

$78.00 TAST-1-1/4-40
1-1/4"-40 HSS Special Tap, 0307-1855 1-1/4" 40

$90.70 TAST-1-5/16-6
1-5/16"-6 HSS Special Tap, 0307-1860 1-5/16" 6

$83.00 TAST-1-5/16-8
1-5/16"-8 HSS Special Tap, 0307-0220 1-5/16" 8

$83.00 TAST-1-5/16-12
1-5/16"-12 HSS Special Tap, 0307-0225 1-5/16" 12

$90.70 TAST-1-5/16-14
1-5/16"-14 HSS Special Tap, 0307-1875 1-5/16" 14

$90.70 TAST-1-5/16-16
1-5/16"-16 HSS Special Tap, 0307-0227 1-5/16" 16

$90.70 TAST-1-5/16-18
1-5/16"-18 HSS Special Tap - NEF, 0307-0229 1-5/16" 18

$90.70 TAST-1-5/16-20
1-5/16"-20 HSS Special Tap, 0307-1880 1-5/16" 20

$90.70 TAST-1-5/16-24
1-5/16"-24 HSS Special Tap, 0307-1885 1-5/16" 24

$90.70 TAST-1-5/16-32
1-5/16"-32 HSS Special Tap, 0307-1900 1-5/16" 32

$90.70 TAST-1-3/8-8
1-3/8"-8 HSS Special Tap, 0307-0230 1-3/8" 8

$90.70 TAST-1-3/8-10
1-3/8"-10 HSS Special Tap, 0307-0235 1-3/8" 10

$90.70 TAST-1-3/8-14
1-3/8"-14 HSS Special Tap, 0307-0238 1-3/8" 14

$90.70 TAST-1-3/8-16
1-3/8"-16 HSS Special Tap, 0307-0240 1-3/8" 16

$90.70 TAST-1-3/8-18
1-3/8"-18 HSS Special Tap - NEF, 0307-0241 1-3/8" 18

$90.70 TAST-1-3/8-20
1-3/8"-20 HSS Special Tap, 0307-0242 1-3/8" 20

$90.70 TAST-1-3/8-24
1-3/8"-24 HSS Special Tap, 0307-1915 1-3/8" 24

$106.00 TAST-1-3/8-27
1-3/8"-27 HSS Special Tap, 0307-1920 1-3/8" 27

$106.00 TAST-1-3/8-32
1-3/8"-32 HSS Special Tap, 0307-1930 1-3/8" 32

$104.90 TAST-1-7/16-8
1-7/16"-8 HSS Special Tap, 0307-1945 1-7/16" 8

$104.90 TAST-1-7/16-12
1-7/16"-12 HSS Special Tap, 0307-0243 1-7/16" 12

$115.00 TAST-1-7/16-14
1-7/16"-14 HSS Special Tap, 0307-1950 1-7/16" 14

$104.90 TAST-1-7/16-16
1-7/16"-16 HSS Special Tap, 0307-0244 1-7/16" 16

$104.90 TAST-1-7/16-18
1-7/16"-18 HSS Special Tap - NEF, 0307-0247 1-7/16" 18

$104.90 TAST-1-7/16-20
1-7/16"-20 HSS Special Tap, 0307-1955 1-7/16" 20

$115.00 TAST-1-7/16-24
1-7/16"-24 HSS Special Tap, 0307-1960 1-7/16" 24

$104.90 TAST-1-7/16-27
1-7/16"-27 HSS Special Tap, 0307-1965 1-7/16" 27

$103.90 TAST-1-1/2-8
1-1/2"-8 HSS Special Tap, 0307-0245 1-1/2" 8

$103.90 TAST-1-1/2-10
1-1/2"-10 HSS Special Tap, 0307-0250 1-1/2" 10

$103.90 TAST-1-1/2-14
1-1/2"-14 HSS Special Tap, 0307-1980 1-1/2" 14

$103.90 TAST-1-1/2-16
1-1/2"-16 HSS Special Tap, 0307-0251 1-1/2" 16

$103.90 TAST-1-1/2-18
1-1/2"-18 HSS Special Tap - NEF, 0307-0252 1-1/2" 18

$103.90 TAST-1-1/2-20
1-1/2"-20 HSS Special Tap, 0307-0253 1-1/2" 20

$103.90 TAST-1-1/2-24
1-1/2"-24 HSS Special Tap, 0307-1985 1-1/2" 24

$118.00 TAST-1-1/2-27
1-1/2"-27 HSS Special Tap 1-1/2" 27

$103.90 TAST-1-1/2-28
1-1/2"-28 HSS Special Tap, 0307-1990 1-1/2" 28

$103.90 TAST-1-1/2-32
1-1/2"-32 HSS Special Tap, 0307-1995 1-1/2" 32

$118.00 TAST-1-1/2-40
1-1/2"-40 HSS Special Tap, 0307-2000 1-1/2" 40

$122.40 TAST-1-9/16-8
1 9/16"-8 HSS Special Tap, 0307-2010 1-9/16" 8

$122.40 TAST-1-9/16-12
1 9/16"-12 HSS Special Tap, 0307-0256 1-9/16" 12

$122.40 TAST-1-9/16-16
1-9/16"-16 HSS Special Tap, 0307-2025 1-9/16" 16

$122.40 TAST-1-9/16-18
1 9/16"-18 HSS Special Tap, 0307-0258 1-9/16" 18

$122.40 TAST-1-9/16-20
1-9/16"-20 HSS Special Tap, 0307-0259 1-9/16" 20
Out of stock
$122.40 TAST-1-9/16-28
1-9/16"-28 HSS Special Tap 1-9/16" 28

$122.40 TAST-1-9/16-32
1-9/16"-32 HSS Special Tap, 0307-2035 1-9/16" 32

$119.60 TAST-1-5/8-5-1/2
1-5/8"-5-1/2" HSS Special Tap, 0307-0261 1-5/8" 5 1/2

$119.60 TAST-1-5/8-8
1-5/8"-8 HSS Special Tap, 0307-0260 1-5/8" 8

$119.60 TAST-1-5/8-10
1-5/8"-10 HSS Special Tap, 0307-0265 1-5/8" 10

$119.60 TAST-1-5/8-12
1-5/8"-12 HSS Special Tap, 0307-0270 1-5/8" 12

$119.60 TAST-1-5/8-14
1-5/8"-14 HSS Special Tap, 0307-0275 1-5/8" 14

$119.60 TAST-1-5/8-16
1-5/8"-16 HSS Special Tap, 0307-0277 1-5/8" 16

$119.60 TAST-1-5/8-18
1-5/8"-18 HSS Special Tap, 0307-0279 1-5/8" 18

$119.60 TAST-1-5/8-20
1-5/8"-20 HSS Special Tap, 0307-0280 1-5/8" 20

$129.00 TAST-1-5/8-24
1-5/8"-24 HSS Special Tap, 0307-2045 1-5/8" 24

$129.00 TAST-1-5/8-27
1-5/8"-27 HSS Special Tap 1-5/8" 27

$129.00 TAST-1-5/8-32
1-5/8"-32 HSS Special Tap, 0307-0283 1-5/8" 32

$118.50 TAST-1-11/16-12
1-11/16"-12 HSS Special Tap, 0307-0282 1-11/16" 12

$139.00 TAST-1-11/16-14
1-11/16"-14 HSS Special Tap 1-11/16" 14

$118.50 TAST-1-11/16-16
1-11/16"-16 HSS Special Tap, 0307-0284 1-11/16" 16

$118.50 TAST-1-11/16-18
1-11/16"-18 HSS Special Tap, 0307-2060 1-11/16" 18

$118.50 TAST-1-11/16-20
1-11/16"-20 HSS Special Tap, 0307-2065 1-11/16" 20

$139.00 TAST-1-11/16-32
1-11/16"-32 HSS Special Tap, 0307-2080 1-11/16" 32

$132.00 TAST-1-3/4-5
1-3/4"-5 HSS Special Tap, 0307-0285 1-3/4" 5

$132.00 TAST-1-3/4-6
1-3/4"-6 HSS Special Tap, 0307-0287 1-3/4" 6

$132.00 TAST-1-3/4-8
1-3/4"-8 HSS Special Tap, 0307-0290 1-3/4" 8

$132.00 TAST-1-3/4-10
1-3/4"-10 HSS Special Tap, 0307-0295 1-3/4" 10

$132.00 TAST-1-3/4-12
1-3/4"-12 HSS Special Tap, 0307-0300 1-3/4" 12

$132.00 TAST-1-3/4-14
1-3/4"-14 HSS Special Tap, 0307-0301 1-3/4" 14

$132.00 TAST-1-3/4-16
1-3/4"-16 HSS Special Tap, 0307-0302 1-3/4" 16

$132.00 TAST-1-3/4-18
1-3/4"-18 HSS Special Tap, 0307-0304 1-3/4" 18

$132.00 TAST-1-3/4-20
1-3/4"-20 HSS Special Tap, 0307-0306 1-3/4" 20

$132.00 TAST-1-3/4-24
1-3/4"-24 HSS Special Tap, 0307-0308 1-3/4" 24

$134.00 TAST-1-13/16-10
1-13/16"-10 HSS Special Tap, 0307-2115 1-13/16" 10

$134.00 TAST-1-13/16-12
1-13/16"-12 HSS Special Tap, 0307-2120 1-13/16" 12

$134.00 TAST-1-13/16-16
1-13/16"-16 HSS Special Tap, 0307-0311 1-13/16" 16

$134.00 TAST-1-13/16-18
1-13/16"-18 HSS Special Tap, 0307-0312 1-13/16" 18

$181.00 TAST-1-7/8-5
1-7/8"-5 HSS Special Tap, 0307-0310 1-7/8" 5

$181.00 TAST-1-7/8-8
1-7/8"-8 HSS Special Tap, 0307-0315 1-7/8" 8

$181.00 TAST-1-7/8-10
1-7/8"-10 HSS Special Tap, 0307-0320 1-7/8" 10

$181.00 TAST-1-7/8-14
1-7/8"-14 HSS Special Tap, 0307-2140 1-7/8" 14

$181.00 TAST-1-7/8-16
1-7/8"-16 HSS Special Tap, 0307-0330 1-7/8" 16

$181.00 TAST-1-7/8-18
1-7/8"-18 HSS Special Tap, 0307-0335 1-7/8" 18

$181.00 TAST-1-7/8-20
1-7/8"-20 HSS Special Tap, 0307-0337 1-7/8" 20

$181.00 TAST-1-7/8-24
1-7/8"-24 HSS Special Tap, 0307-2145 1-7/8" 24

$181.00 TAST-1-15/16-8
1-15/16"-8 HSS Special Tap, 0307-2160 1-15/16" 8

$159.00 TAST-1-15/16-12
1-15/16"-12 HSS Special Tap, 0307-2170 1-15/16" 12

$159.00 TAST-1-15/16-16
1-15/16"-16 HSS Special Tap, 0307-0338 1-15/16" 16

$159.00 TAST-1-15/16-18
1-15/16"-18 HSS Special Tap, 0307-2180 1-15/16" 18

$181.00 TAST-1-15/16-20
1-15/16"-20 HSS Special Tap, 0307-2185 1-15/16" 20

$159.00 TAST-2-4-1/2
2"-4-1/2 HSS Special Tap, 0307-0340 2" 4 1/2

$159.00 TAST-2-6
2"-6 HSS Special Tap, 0307-2200 2" 6

$159.00 TAST-2-8
2"-8 HSS Special Tap, 0307-0345 2" 8

$159.00 TAST-2-10
2"-10 HSS Special Tap, 0307-0350 2" 10

$129.00 TAST-2-12
2"-12 HSS Special Tap, 0307-0355 2" 12

$139.00 TAST-2-14
2"-14 HSS Special Tap, 0307-2205 2" 14

$139.00 TAST-2-16
2"-16 HSS Special Tap, 0307-0362 2" 16

$139.00 TAST-2-18
2"-18 HSS Special Tap, 0307-2210 2" 18

$139.00 TAST-2-20
2"-20 HSS Special Tap, 0307-0364 2" 20

$159.00 TAST-2-1/16-12
2-1/16"-12 HSS Special Tap, 0307-2230 2-1/16" 12

$217.00 TAST-2-1/8-4-1/2
2-1/8"-4-1/2 HSS Special Tap, 0307-2240 2-1/8" 4-1/2

$217.00 TAST-2-1/8-8
2-1/8"-8 HSS Special Tap, 0307-0365 2-1/8" 8

$217.00 TAST-2-1/8-12
2-1/8"-12 HSS Special Tap, 0307-0370 2-1/8" 12

$217.00 TAST-2-1/8-16
2-1/8"-16 HSS Special Tap, 0307-2245 2-1/8" 16

$217.00 TAST-2-1/8-20
2-1/8"-20 HSS Special Tap, 0307-2255 2-1/8" 20
Out of stock
$217.00 TAST-2-1/8-32
2-1/8"-32 HSS Special Tap (limited quantity) 2-1/8" 32

$269.00 TAST-2-1/4-4-1/2
2-1/4"-4-1/2" HSS Special Tap, 0307-0380 2-1/4" 4 1/2

$269.00 TAST-2-1/4-8
2-1/4"-8 HSS Special Tap, 0307-0385 2-1/4" 8

$207.00 TAST-2-1/4-12
2-1/4"-12 HSS Special Tap, 0307-0390 2-1/4" 12

$207.00 TAST-2-1/4-16
2-1/4"-16 HSS Special Tap, 0307-0393 2-1/4" 16

$207.00 TAST-2-1/4-18
2-1/4"-18 HSS Special Tap, 0307-2270 2-1/4" 18

$321.00 TAST-2-1/4-20
2-1/4"-20 HSS Special Tap, 0307-2275 2-1/4" 20
Out of stock
$207.00 TAST-2-1/4-32
2-1/4"-32 HSS Special Tap (limited quantity) 2-1/4" 32

$215.00 TAST-2-5/16-14
2-5/16"-14 HSS Special Tap, 0307-2295 2-5/16" 14

$215.00 TAST-2-5/16-18
2-5/16"-18 HSS Special Tap, 0307-2305 2-5/16" 18

$242.00 TAST-2-3/8-8
2-3/8"-8 HSS Special Tap, 0307-0395 2-3/4" 8

$242.00 TAST-2-3/8-12
2-3/8"-12 HSS Special Tap, 0307-0400 2-3/4" 12

$210.00 TAST-2-3/8-16
2-3/8"-16 HSS Special Tap, 0307-2315 2-3/4" 16

$210.00 TAST-2-3/8-18
2-3/8"-18 HSS Special Tap, 0307-2320 2-3/4" 18

$289.00 TAST-2-1/2-4
2-1/2"-4 HSS Special Tap, 0307-0410 2-1/2" 4

$289.00 TAST-2-1/2-8
2-1/2"-8 HSS Special Tap, 0307-0420 2-1/2" 8

$269.00 TAST-2-1/2-12
2-1/2"-12 HSS Special Tap, 0307-0423 2-1/2" 12
Out of stock
$269.00 TAST-2-1/2-14
2-1/2"-14 HSS Special Tap (limited quantity) 2-1/2" 14

$269.00 TAST-2-1/2-16
2-1/2"-16 HSS Special Tap, 0307-2340 2-1/2" 16

$284.00 TAST-2-5/8-8
2-5/8"-8 HSS Special Tap, 0307-0424 2-5/16" 8

$284.00 TAST-2-5/8-12
2-5/8"-12 HSS Special Tap, 0307-0426 2-5/16" 12

$284.00 TAST-2-5/8-16
2-5/8"-16 HSS Special Tap, 0307-2370 2-5/16" 16

$284.00 TAST-2-5/8-20
2-5/8"-20 HSS Special Tap, 0307-2380 2-5/16" 20
Out of stock
$324.00 TAST-2-3/4-3
2-3/4"-3 HSS Special Tap (limited quantity) 2-3/4" 3

$324.00 TAST-2-3/4-4
2-3/4"-4 HSS Special Tap, 0307-2385 2-3/4" 4

$324.00 TAST-2-3/4-8
2-3/4"-8 HSS Special Tap, 0307-0425 2-3/4" 8

$324.00 TAST-2-3/4-12
2-3/4"-12 HSS Special Tap, 0307-0435 2-3/4" 12

$324.00 TAST-2-3/4-16
2-3/4"-16 HSS Special Tap, 0307-2390 2-3/4" 16

$359.00 TAST-2-7/8-8
2-7/8"-8 HSS Special Tap, 0307-2410 2-7/8" 8

$359.00 TAST-2-7/8-12
2-7/8"-12 HSS Special Tap, 0307-2415 2-7/8" 12

$419.00 TAST-2-7/8-16
2-7/8"-16 HSS Special Tap, 0307-2420 2-7/8" 16

$429.00 TAST-3-4
3"-4 HSS Special Tap, 0307-0439 3" 4

$429.00 TAST-3-8
3"-8 HSS Special Tap, 0307-0440 3" 8

$429.00 TAST-3-12
3"-12 HSS Special Tap, 0307-0445 3" 12

$429.00 TAST-3-16
3"-16 HSS Special Tap, 0307-2435 3" 16

$429.00 TAST-3-18
3"-18 HSS Special Tap, 0307-2440 3" 18

$499.00 TAST-3-1/8-8
3-1/8"-8 HSS Special Tap, 0307-2455 3-1/8" 8

$479.00 TAST-3-1/8-12
3-1/8"-12 HSS Special Tap, 0307-2460 3-1/8" 12
Out of stock
$520.00 TAST-3-3/16-12
3-3/16"-12 HSS Special Tap (limited quantity) 3-3/16" 12

$690.00 TAST-3-1/4-4
3-1/4"-4 HSS Special Tap, 0307-2480 3-1/4" 4

$520.00 TAST-3-1/4-8
3-1/4"-8 HSS Special Tap, 0307-2485 3-1/4" 8

$520.00 TAST-3-1/4-12
3-1/4"-12 HSS Special Tap, 0307-2490 3-1/4" 12

$525.00 TAST-3-3/8-8
3-3/8"-8 HSS Special Tap, 0307-2515 3-3/8" 8

$525.00 TAST-3-3/8-12
3-3/8"-12 HSS Special Tap, 0307-2520 3-3/8" 12

$620.00 TAST-3-1/2-4
3-1/2"-4 HSS Special Tap, 0307-2530 3-1/2" 4

$620.00 TAST-3-1/2-8
3-1/2"-8 HSS Special Tap, 0307-0450 3-1/2" 8

$620.00 TAST-3-1/2-12
3-1/2"-12 HSS Special Tap, 0307-0455 3-1/2" 12

$790.00 TAST-3-3/4-4
3-3/4"-4 HSS Special Tap, 0307-2560 3-3/4" 4

$790.00 TAST-3-3/4-8
3-3/4"-8 HSS Special Tap, 0307-2565 3-3/4" 8

$790.00 TAST-3-3/4-12
3-3/4"-12 HSS Special Tap, 0307-2570 3-3/4" 12

$880.00 TAST-4-4
4"-4 HSS Special Tap, 0307-2600 4" 4

$880.00 TAST-4-8
4"-8 HSS Special Tap, 0307-0460 4" 8

$880.00 TAST-4-12
4"-12 HSS Special Tap, 0307-0465 4" 12