Taps

CONTENTSPage No.

Screwing Taps - Nomenclature 190Hand and Short Machine Screwing Taps (Metric Coarse & Fine Pitch) 191sizes up to & inclu . 10 mmHand and Short Machine Screwing Taps (Metric Coarse Pitch) 192Hand and Short Machine Screwing Taps (Metric Fine Pitch) 193Hand Taps - BSW Form 196Hand Taps - BSF Form 197Hand Taps - UNC Form 198Hand Taps - UNF Form 199Hand Taps - BSCY Form 200Hand Taps - BS Conduit Form 201Hand Taps - BSP (Parallel) 202Hand Taps - BSP (Parallel) 'G' Series 203Hand Taps - BSP (Taper) Form (RC Series) 204Hand Taps - NPT 205Long Shank Machine Screwing Taps (Metric Coarse Pitch) 206Long Shank Machine Screwing Taps (Metric Fine Pitch) 207Nut Screwing Taps (Metric Coarse Pitch) 209Nut Taps - BSW Form 210Nut Taps - BSF Form 211Nut Taps - UNC Form 212Nut Taps - UNF Form 213Hand Taps to DIN 352 214Hand Taps to DIN 2181 215

Core Dia.Size ofSquare

Length ofSquare

Majordia.

Chamfer Relief

Shank dia. —'

Thread Lead Angle

Pitch dia..—

Cutting Edge

No Relief

Concentric

Heel

ConcentricMargin

Con-eccentricRelief

NegativeRake Angle

90 deg.

Radius

TangentialMeasurement

Hook Angle(chordal Measurement)

NegativeRake

radial PositiveRake

Hook

Back 190

TABLE I : ISO Metric Screw Threads Coarse Pitch TABLE II : ISO Metric Screw Threads Fine Pitch

NominalDiameter

3.04.04.55.06.07.08.09.0

10.0

Pitch Pitch

0.500.700.750.801.001.001.251.251.50

ThreadLength

111313161919222224

OverallLength

485353586666727280

ShankDia

3.154.004.505.006.307.108.009.00

10.00

SquareSize

2.503.153.554.005.005.606.307.108.00

NominalDiameter

4.04.55.05.56.07.08.08.09.09.0

10.010.010.0

0.500.500.500.500.750.750.751.000.751.000.751.001.25

ThreadLength

13131617191916191619172020

Overal lLength

53535862666666696669737676

ShankDia

4.04.55.05.66.37.18.08.09.09.0

10.010.010.0

SquareSize

3.153.554.004.505.005.606.306.307.107.108.008.008.00

Manufactured with straight flutes and a shank with square for driving,

1)

2)

Back

Unless otherwise specified, the Screwing taps shall be supplied with toleranceclass '6H', non-serial and with Straight flutes.

Usually supplied in sets consisting of three taps, viz. Taper, Second and Bottomingfor Coarse Pitch and Taper and Bottoming for Fine Pitch

191

High Speed SteelGROUND THREAD HAND AND SHORT

MACHINE SCREWING TAPSFor ISO Metric Screw Threads

Specifications conform toIS 6175 : Part 2 : 1992

Dimensions in mm

1) Unless otherwise specified, the Screwing taps shall be supplied with tolerance class '6H',Non-Serial and with Straight flutes.

2) Usually supplied in sets consisting of three taps viz, Taper, Second and Bottoming.

Back 192

NominalDiameter

1112141618202224273033

Pitch

1.501.752.002.002.502.502.503.003.003.503.50

ThreadLength

2529303237373845454851

OverallLength

858995

102112112118130135138151

ShankDia

8.09.0

11.212.514.014.016.018.020.020.022.4

SquareSize

6.37.19.0

10.011.211.212.514.016.016.018.0

NominalDiameter

36394245485256606468

Pitch

4.004.004.504.505.005.005.505.506.006.00

ThreadLength

57606067677070767979

OverallLength

162170170187187200200221224234

ShankDia

25.028.028.031.531.535.535.540.040.045.0

SquareSize

20.022.422.425.025.028.028.031.531.535.5


MACHINE SCREWING TAPSFor ISO Metric Coarse Pitch Threads


Dimensions in mm

Manufactured with straight flutes and a shank with square for driving.

Back 193

NominalDiameter

11111212121414141515161617171818182020202222

Pitch

0.751.001.001.251.501.001.251.501.001.501.001.501.001.501.001.502.001.001.502.001.001.50

ThreadLength

20202024292225302230223222322229372729372933

OverallLength

8080808489879095879592

10292

10297

104112102104112109113

ShankDia

8.08.09.09.09.0

11.211.211.211.211.212.512.512.512.514.014.014.014.014.014.016.016.0

SquareSize

6.36.37.17.17.19.09.09.09.09.0

10.010.010.010.011.211.211.211.211.211.212.512.5

NominalDiameter

22242424252525262727272828283030303032323333

Pitch

2.001.001.502.001.001,502.001.501.001.502.001.001.502.001.001,502.003.001.502.001.502.00

ThreadLength

38293535293535353037373037373037374837373737

OverallLength

118114120120114120120120120127127120127127120127127138137137137137

ShankDia

16.018.018.018.018.018.018.018.020.020.020.020.020.020.020.020.020.020.022.422.422.422.4

SquareSize

12.514.014.014,014.014.014.014.016.016.016.016.016.016.016.016.016.016.018.018.018.018.0


MACHINE SCREWING TAPSFor ISO Metric Fine Pitch Threads


Dimensions in mm

NominalDiameter

3335363636383939394040404242424245454545484848485050505252525255

Pitch

3.01.51.52.03.01.51.52.03.01.52.03.01.52.03.04.01.52.03.04.01.52.03.04,01.52.03.01.52.03.04.01.5

ThreadLength

5139393957393939603939603939606045456767454567674545674545707045

Overal lLength

151144144144162149149149170149149170149149170170165165187187165165187187165165187175175200200175

ShankDia

22.425.025.025.025.028.028.028.028.028.028.028.028.028.028.028.031.531.531.531.531.531.531.531.531.531.531.535.535.535.535.535.5

SquareSize

18.020.020.020.020.022.422.422.422,422.422.422.422.422.422.422.425.025.025.025.025.025.025.025.025.025.025.028.028.028.028.028.0

NominalDiameter

5555555656565658585858606060606262626264646464656565656868686870

Pitch

2.03.04.01.52.03.04.01,52.03.04.01.52.03.04.01.52.03.04.01.52.03.04.01.52.03.04.01.52.03,04,01,5

ThreadLength

4570704545707048486464484864644848646448486464484864644848646448

OverallLength

175200200175175200200193193209209193193209209193193209209193193209209193193209209203203219219203

ShankDia

35.535.535.535.535.535.535.540.040,040.040,040.040.040.040.040.040.040.040.040.040.040.040,040.040.040.040.045.045.045.045,045. 0

SquareSize

28. 0

28. 0

28.0

28.0

28. 0

28.0

28.0

31.5

31.5

31.5

31.5

31.5

31. 5

31.5

31.5

31.5

31.5

31.5

31.5

31.5

31.5

31.5

31.5

31.5

31.5

31.5

31. 5

35. 5

35. 5

35.5

35.5

35.5

Back 194




Dimensions in mm

Back

1) Unless otherwise specified, the Screwing taps shall be supplied withtolerance class '6H', Non-Serial and with Straight flutes.

2) Usually supplied in sets consisting of two taps viz. Taper andBottoming.

195

NominalDiameter

707070707272727272757575757676767676788080

Pitch

2.03.04.06.01.52.03.04.06.01.52.03.04.01.52.03.04 06.02.01.52.0

ThreadLength

486464794848646479484864645151676783515151

Overal lLength

203219219234203203219219234203203219219226226242242258226226226

ShankDia

454545454545454545454545455050505050505050

SquareSize

35.535.535.535.535.535.535.535.535.535.535.535.535.540.040.040.040.040.040.040.040.0

NominalDiameter

80808082858585859090909095959595

100100100100

Pitch

3.04.06.02.02.03.04.06.02.03.04.06.02.03.04.06.02.03.04.06.0

ThreadLength

6767835151676786516767865470708954707089

OverallLength

242242258226226242242261226242242261244260260279244260260279

ShankDia

5050505050505050505050505656565656565656

SquareSize

40.040.040.040.040.040.040.040.040.040.040.040.045.045.045.045.045.045.045.045.0




Dimensions in mm

NominalDiameter

Inch

3/161/45/163/87/161/29/165/811/163/47/8

ThreadperInch

242018161412121111109

ThreadLength

mm

1619222425293032373738

OverallLength

mm

58667280858995

102112112118

ShankDiamm

5.006.308.00

10.008.009.00

11.2012.5014.0014.0016.00

SquareSizemm

4.005.006.308.006.307.109.00

10.0011.2011.2012.50

NominalDiameter

Inch

11.1/81.1/41.3/81.1/21.3/422.1/42.1/22.3/43

ThreadperInch

8776654.1/2443.1/23.1/2

ThreadLength

mm

4548515760677076797983

OverallLength

mm

130138151162170187200221224234258

ShankDiamm

18.020.022.425.028.031.535.540.040.045.050.0

SquareSizemm

14.016.018.020.022.425.028.031.531.535.540.0

Taps upto and including 3/8" dia. are supplied with full diameter shank and a neck between threadedportion and shank


Usually supplied in sets consisting of three taps, viz. Taper, Second and Bottoming.

Back 196

High Speed SteelGROUND THREAD HAND TAPS

BSW Form

Specifications conform toBS 949 : Part 2 : 1979(Class 2, Corresponds to Zone 3)

Dimensions in inch / mm


Manufactured with straight flutes and a shank with square for driving

Usually supplied in sets consisting of three taps viz., Taper, Second and Bottoming.

Back 197

NominalDiameter

Inch

3/161/45/163/87/161/29/165/811/163/47/81

ThreadperInch

322622201816161414121110

ThreadLength

mm

161922242529303237373845

OverallLength

mm

58667280858995102112112118130

ShankDiamm

5.006.308.00

10.008.009.00

11.2012.5014.0014.0016.0018.00

SquareSizemm

4.005.006.308.006.307.109.00

10.0011.2011.2012.5014.00

NominalDiameter

Inch

1.1/81.1/41.3/81.1/21.5/81.3/422.1/42.1/22.3/43

ThreadperInch

99888776665

ThreadLength

mm

4851576060677076797983

OverallLength

mm

138151162170170187200221224234258

ShankDiamm

20.022.425.028.028.031.535.540.040.045.050.0

SquareSizemm

16.018.020.022.422.425.028.031.531.535.540.0


BSF Form



NominalDiameter

Inch

1/45/163/87/161/29/165/83/47/81

ThreadperInch

201816141312111098

ThreadLength

mm

19222425293032373845

OverallLength

mm

667280858995

102112118130

ShankDiamm

6,38.0

10.08.09.0

11.212.514.016.018.0

SquareSizemm

5.06.38.06.37.19.0

10.011.212.514.0

NominalDiameter

Inch

1.1/81.1/41.3/81.1/21.3/422.1/42.1/22.3/43

ThreadperInch

77665

4.1/24.1/2

444

ThreadLength

mm

48515760677076797983

OverallLength

mm

138151162170187200221224234258

ShankDiamm

20.022.425.028.031.535.540.040.045.050.0

SquareSizemm

16.018.020.022.425.028.031.531.535.540.0




Back 198


UNC Form



NominalDiameter

Inch

1/45/163/87/161/29/165/8

ThreadperInch

28242420201818

ThreadLength

mm

19192022242525

OverallLength

mm

66697682849095

ShankDiamm

6.38.0

10.08.09.0

11.212.5

SquareSizemm

5.06.38.06.37.19.010.0

NominalDiameter

Inch

3/47/811.1/81.1/41.3/81.1/2

ThreadperInch

16141212121212

ThreadLength

mm

29333537373939

OverallLength

mm

104113120127137144149

ShankDiamm

14.016.018.020.022.425.028.0

SquareSizemm

11.212.514.016.018.020.022.4




Back 199


UNF Form



NominalDiameter

1/45/163/87/161/29/165/811/163/4

ThreadsperInch

262626262626262626

ThreadLength

11.1/81.1/41.1/41.1/41.1/41.1/41.1/41.1/2

OverallLength

2.1/22.3/42.15/16333333.1/4

ShankDia

0.2530.3150.3770.3230.3670.4290.4800.5420.590

SquareSize

0.1970.2420.2940.2420.2750.3220.3600.4060.442

Nominal Thread Overall Shank SquareLength LengthDiameter

7/811.1/81.2901.3701.4501.9/161.5/8

Dia

2424262424262424

1.1/21.1/21.1/21.1/21.1/21.1/222

3.1/43.1/4444455

0.6970.8000.8961.0211.1081.2331.3051.305

Size

0.5230.6000.6720.7660.8310.9250.9790.979



Back 200

ThreadsperInch


BSCY Form

Specifications conform toBS 949 : 1951( Zone 3)

Dimensions in Inches

NominalDiameter

1/25/83/41

ThreadsperInch

18181616

ThreadLength

1.1/41.1/41.1/21,1/2

OverallLength

333.1/43,1/4

ShankDia

0.3670.4800.5900.800

SquareSize

0.2750.3600.4420.600

NominalDiameter

1.1/41.1/222.1/2

ThreadsperInch

16141414

ThreadLength

1.1/21.1/222

OverallLength

4455.1/4

ShankDia

1.0211.2331.6442.100

SquareSize

0.7660.9251.2331.575

Manufactured with whit worth thread form with straight flutes and a shank with square for driving


Back 201


BS Conduit Form

Specifications conform toBS 949 :1951(Zone 3)


NominalSiz e

1/81/43/81/25/83/47/811.1/4

ThreadsperInch

281919141414141111

ThreadLength

3/41.1/161.1/161.3/81.3/81.3/81.9/161.3/41.3/4

OverallLength

2.1/82.7/162.9/163.1/83.3/163.1/43.1/23.3/44

ShankDia

0.3180.4290.5420.6870.8000.9061.0931.1251.312

SquareSiz e

0.2380.3220.4060.5150.6000.6790.8120.8430.984

NominalSiz e

1.1/21.3/422.1/42.1/22.3/433.1/24

ThreadsperInch

111111111111111111

ThreadLength

1.3/41.3/41.3/42.1/8

2.9/162.9/162.5/8

2.11/162.3/4

OverallLength

4.1/44.3/84.1/255.1/25.3/466.1/26.3/4

ShankDia

1.5001.6251.8752.0002.2502.3752.6252.8123.000

SquareSize

1.1251.2181.4061.500

1.687

1.781

1.968

2.10 8

2.250


Usually supplied in sets consisting of two taps viz., Taper and Bottoming.

Back 202


BS (Parallel)

Specifications conform toBS 949 :1951(Zone 3)


NominalDiameter

inch

1/81/43/81/25/83/47/811.1/81.1/4

Threadsperinch

28191914141414111111

ThreadLength

mm

15192126262829333436

OverallLength

mm

596775879196

102109115119

ShankDiamm

8.010.012.516.018.020.022.425.028.031.5

SquareSizemm

6.38.0

10.012.5

14.016.018.020.022.425.0

NominalDiameter

inch

1.1/21.3/422.1/42.1/22.3/433.1/24

ThreadsperInch

111111111111111111

ThreadLength

mm

373941424546485053

OverallLength

mm

125132140142153160164173185

ShankDiamm

35.535.540.040.045.050.050.063.071.0

SquareSizemm

28.028.031.531.535.540.040.050.056.0



Back 203


BSP (Parallel) 'G' Series

Specifications conform toBS 949 :Part3 : 1982


NominalDiameter

Inch

1/81/43/81/23/41

ThreadsperInch

281919141411

ThreadLength

mm

151921262833

OverallLength

mm

5967758796

109

ShankDiamm

8.010.012.516.020.025.0

SquareSizemm

6.38.0

10.012.516.020.0

Nomina lDiameter

Inch

1.1/41.1/22

2.1/234

ThreadsperInch

111111111111

ThreadLength

mm

363741454853

Overal lLength

mm

119125140153164185

ShankDiamm

31.535.540.045.050.071.0

SquareSizemm

25.028.031.535.540.056.0


Usually supplied in sets consisting of two taps viz., Taper and Bottoming,

Back 204


BSP (Taper) Rc Series

Specifications conform toBS 949 : Part 3 : 1982


NominalSize

1/81/43/81/23/411.1/4

ThreadsperInch

271818141411.1/211.1/ 2

ThreadLength

3/41.1/161.1/161.3/81.3/81.3/41.3/4

OverallLength

2.1/82.7/162.9/163.1/83.1/43.3/44

ShankDia

0.3180.4290.5420.6870.9061.1251.312

SquareSize

0.2380.3220.4060.5150.6790.8430.984

NominalSize

1.1/222.1/233.1/24

ThreadsperInch

11.1/211.1/28888

ThreadLength

1.3/41.3/42.9/162.5/82.11/162.3/4

OverallLength

4.1/44.1/25.1/266.1/26.3/4

ShankDia

1.5001.8752.2502.6252.8123.000

SquareSize

1.1251.4061.6871.9682.1082.250

Manufactured with straight flutes and shank with square for driving


Back

205


American National Taper Pipe Taps (NPT)

Specifications conform toBS 949 : 1969

Dimensions in inches

Manufactured with straight flutes and a long shank with a driving square for machine tapping.

Type 'A' - 5 Deg. Taper Angle with Long Taper LeadType 'B' -10 Deg, Taper Angle with Spiral pointType 'C - 20 Deg. Taper Angle with Shorter Taper LeadType 'D' -10 Deg, Taper Angle without Spiral point

Unless otherwise specified the Screwing Taps shall be supplied withtolerance class 6H.

Back 206

NominalDiameter

6789

101112141618

2224

20

Pitch

1.001.001.251.251.501.501.752.002.00

3.00

2.502.502.50

ThreadLength

19192222242529303237373845

OverallLength

89.089.097.097.0

108.0115.0119.0127.0137.0149.0149.0158.0172.0

ShankDia

4.55.66.37.18.08.09.0

11.212.514.014.016.018.0

SquareSize

3.554.505.005.606.306.307.10

9.0010.0011.2011.2012.5014.00

NominalDiameter

27303336394245485256606468

Pitch

3.003.503.504.004.004.504.505.005.005.505.506.006.00

ThreadLength

45485157606067677070767979

OverallLength

180.0183.201.0

0

214.5225.0225.0247.0247.0265.0265.0293.5296.5311.5

ShankDia

20.020.022.425.028.028.031.531.535.535.540.040.045.0

SquareSize

16.016.018.020.022.422.425.025.028.028.031.531.535.5

High Speed SteelGROUND THREAD LONG SHANK

MACHINE SCREWING TAPSFor ISO Metric Coarse Pitch Threads


Dimensions in mm

Back 207

NominalDiameter

678899

10101011111212121414141515161617

Pitch

0.750.750.751.000.751.000.751.001.250.751.001.001.251.501.001.251.501.001.501.001.501.00

ThreadLength

19191619161917202020202024292225302230223222

OverallLength

898991979497

104108108110110110119119124127127124127127137127

ShankDia

4.55.66.36.37.17.18.08.08.08.08.09.09.09.0

11.211.211.211.211.212.512.512.5

SquareSize

3.554.505.005.005.605.606.306.306.306.306.307.107.107.109.009.009.009.009.00

10.0010.0010.00

NominalDiameter

17181818202020222222242424252525

Pitch

1.501.001.502.001.001.502.001.001.502.001.001.502.001.001.502.00

26 1.502627272728

2.001.001.502.001.00

ThreadLength

32222937272937293338293535293535353530373730

OverallLength

137135142149140142149149153158157172172157163163163163165172172165

ShankDia

12.514.014.014.014.014.014.016.016.016.018.018.018.018.018.018.018.018.020.020.020.020.0

SquareSize

10.011.211.211.211.211.211.212.512.512.514.014.014.014.014.014.014.014.016.016.016.016.0




Dimensions in mm

NominalDiameter

282830303030323233333335363636383939394040

Pitch

1.52.01.01.52.03.01.52.01.52.03.01.51.52.03.01.51.52.03.01.52.0

ThreadLength

373730373748373737375139393957393939603939

OverallLength

172.0172.0165.0172.0172.0183.0187.0187.0187.0187.0201.0196.5196.5196.5214.5204.0204.0204.0225.0204.0204.0

ShankDia

20.020.020.020.020.020.022.422.422.422.422.425.025.025.025.028.028.028.028.028.028.0

SquareSize

16.016.016.016.016.016.018.018.018.018.018.020.020.020.020.022.422.422.422.422.422.4

NominalDiameter

4042424242454545454848484850505052525252

Pitch

3.01.52.03.04.01.52.03.04.01.52.03.04.01.52.03.01.52.03.04.0

ThreadLength

6039396060454567674545676745456745457070

OverallLength

225.0204.0204.0225.0225.0225.0225.0247.0247.0225.0225.0247.0247.0225.0225.0247.0240.0240.0265.0265.0

ShankDia

28.028.028.028.028.031.531.531.531.531.531.531.531.531.531.531.535.535.535.535.5

SquareSize

22.422.422.422.422.425.025.025.025.025.025.025.025.025.025.025.028.028.028.028.0

Type 'A' - 5 Deg. Taper Angle with Long Taper LeadType 'B' -10 Deg. Taper Angle with Spiral pointType 'C'- 20 Deg. Taper Angle with Shorter Taper LeadType 'D' - 10 Deg. Taper Angle without Spiral point.

Unless otherwise specified the Screwing Taps shall be supplied withtolerance class 6H.

Back 208




Dimensions in mm

Manufactured with straight flutes and a long shank with a square for machine tapping of nuts.

Unless otherwise specified the screwing taps shall be supplied with Tolerance class 6H

Back 209

NominalDiameter

6789

10111214161820

Pitch

1 001.001.251.251.501.501.752.002.002.502.50

ThreadLength

3236404045455056636370

OverallLength

110110125140140160180200200220250

ShankDia

4.55.66.37.18.08.09.0

11.212.514.014.0

SquareSize

3.554.505.005.606.306.307.109.00

10.0011.2011.20

NominalDiameter

22242730333639424548

Pitch

2.503.003.003.503.504.004.004.504.505.00

ThreadLength

808090

100110110125125140140

OverallLength

280280315315355400400450500500

ShankDia

16.018.020.020.022.425.028.028.031.531.5

SquareSize

12.514.016.016.018.020.022.422.425.025.0

High Speed SteelGROUND THREAD NUT SCREWING TAPS

For ISO Metric Coarse Pitch Threads


Dimensions in mm


Back 210

NominalDiameter

Inch

1/45/1 6

3/87/1 6

1/29/1 6

5/83/4

ThreadsperInch

2018161412121110

ThreadLength

mm

3842485564647076

OverallLength

mm

110120140160180200200250

ShankDiamm

4.506.007.008.009.50

11.2012.5014.00

SquareSizemm

3.554.505.606.307.509.00

10.0011.20

NominalDiameter

Inch

7/811.1/81.1/41.1/ 21.3/42

ThreadsperInch

987765

4.1/2

ThreadLength

mm

8595

109109127153170

OverallLength

mm

280280315355400500560

ShankDiamm

16.018.020.022.428.031.5

35.5

SquareSizemm

12.5

14.0

16.018.0

22.425.028.0

High Speed SteelGROUND THREAD NUT TAPS

BSW Form

Specifications conform toBS 949-1969(Zone 3)



Back 211

NominalDiameter

Inch

1/45/163/87/161/29/165/83/47/8

ThreadsperInch

262220181616141211

ThreadLength

mm

303538434848556470

OverallLength

mm

110120140160180200200250280

ShankDiamm

4.506.007.008.009.50

11.2012.5014.0016.00

SquareSizemm

3.554.505.606.307.509.00

10.0011.2012.50

NominalDiameter

Inch

11.1/81.1/41.3/81.1/21.5/81.3/42

ThreadsperInch

109988877

ThreadLength

mm

768585959595

109109

OverallLength

mm

280315355400400450500560

ShankDiamm

18.020.022.425.028.028.031.535.5

SquareSizemm

14.016.018.020.022.422.425.028.0


BSF Form




Back 212

NominalDiameter

Inch

1/45/163/87/161/29/165/83/4

ThreadsperInch

ThreadLength

mm

OverallLength

mm

110125140160180200200250

ShankDiamm

4.56.07.08.09.5

11.212.514.0

SquareSizemm

3.554.505.606.307.509.00

10.0011.20

NominalDiameter

Inch

1.1/81.1/41.3/81.1/21.3/42

ThreadsperInch

89

776654.1/2

ThreadLength

mm

9585

109109127127153170

OverallLength

mm

280280315355400400500560

ShankDiamm

16.018.020.022.425.028.031.535.5

SquareSizemm

12.514.016.018.020.022.425.028.0


UNC Form



20 384348555964

7076

18

161413121110

7/81

Manufactured with straight flutes an d a long shank with a square for machine tapping of nuts.

Back 213

NominalDiameter

Inch

1/45/163/87/161/29/165/8

ThreadsperInch

28242420201818

ThreadLength

mm

28323238384343

OverallLength

mm

110125140160180200200

ShankDiamm

4.56.07.08.09.5

11.212.5

SquareSizemm

3.554.505.606.307.509.00

10.00

NominalDiameter

Inch

3/47/811.1/81.1/41.3/81.1/2

ThreadsperInch

16141212121212

ThreadLength

mm

48556464646464

OverallLength

mm

250280280315355400400

ShankDiamm

14.016.018.020.022.425.028.0

SquareSizemm

11.212.514.016.018.020.022.4


UNF Form




Usually supplied in sets consisting of Three serial Hand taps viz., Rougher, Intermediate and Finisher tapUnless otherwise Specified , the screwing taps shall be supplied with tolerance class '6H'

Back 214

NominalDiameter

3.03.54.04.55.06.07.08.09.0

10.011.012.014.016.018.020,0

Pitch

0.50.60.70.750.81.01.01.251.251.51.51.752.02.02.52.5

ThreadLength

11131316161919222224242930324040

OverallLength

40454550505050566370707580809595

ShankDia

3.54.04.56.06.06.06.06,07.07.08.09.0

11.012.014.016.0

SquareSize

2.73.03.44.94.94.94.94.95.55.56.27.09.09.0

11.012.0

NominalDiameter

222427303336394245485256606468

Pitch

2.53.03.03.53.54.04.04.54.55.05.05.55.56.06.0

ThreadLength

405050565663636370757585859090

OverallLength

100110110125125150150150160180180200200220220

ShankDia

18.018.020.022.025.028.032.032.036.036.040.045.045.050.050.0

SquareSize

14.514.516.018.020.022.024.024.029.029.032.035.035.039.039.0


For ISO Metric Coarse Pitch Threads

Specifications conform toDIN 352 - 1981

Dimensions in mm


Usually supplied in sets consisting of Two serial Hand taps viz., Rougher and Finisher tapUnless otherwise Specified, the screwing taps shall be supplied with tolerance class '6H'

Back 215

NominalDiameter

4.05.05.56.07.08.08.09.09.0

10.010.010.011.011.012.012.0

Pitch

0.50.50.50.750.750.751.00.751.00.751.01.250.751.01.01.25

ThreadLength

10121214141922192220202420202222

OverallLength

45505050505056566363637063637070

ShankDia

4.56.06.06.06.06.06.07.07.07.07.07.08.08.09.09.0

SquareSize

3.44.94.94.94.94.94.95.55.55.55.55.56.26.27.07.0

NominalDiameter

12

141414151516161818202022222424

Pitch

1.5

1.01.251.51.01.51.01.51.01.51.01.51.01.51.01.5

ThreadLength

22

222222222222222222222222222222

OverallLength

70

707070707070708080808080809090

ShankDia

9.0

11.011.011.012.012.012.012.014.014.016.016.018.018.018.018.0

SquareSize

7.0

9.09.09.09.09.09.09.0

11.011.012.012.014.514.514.514.5

High Speed SteelGROUND THREAD HAND TAPSFor ISO Metric Fine Pitch Threads


Dimensions in mm

Back 216

NominalDiameter

24252527272828303032323333363636393939

Pitch

2.01.52.01.52.01.52.01.52.01.52.01.52.01.52.03.01.52.03.0

ThreadLength

22222222222222222222222525254040254040

Overal lLength

9090909090909090909090

100100100125125110125125

ShankDia

18181820202020222222222525282828323232

SquareSize

14.514.514.516.016.016.016.018.018.018.018.020.020.022.022.022.024.024.024.0

Nomina lDiamete r

404040424242454545484848505050525252

Pitch

1.52.03.01.52.03.01.52.03.01.52.03.01.52.03.01.52.03.0

ThreadLength

254040254040254040404040404040404040

Overal lLength

110125125110125125110125125140140140140140140140140140

ShankDia

323232323232363636363636363636404040

SquareSize

24.024.024.024.024.024.029.029.029.029.029.029.029.029.029.032.032.032.0

High Speed SteelGROUND THREAD HAND TAPSFor ISO Metric Fine Pitch Threads


Dimensions in mm

Taps

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