Industrial Catalog

Standard Tap Dimensions

(L)

(L)

(L)

(l  )

(l  )

(l  )

(l)

(l)

(l)

(a)

(d 1 )

(d 1 )

(d 1 )

Blank Design No. 1

Blank Design No. 2

Blank Design No. 3

Nominal Diameter Range Inches Over to (inc.)

0 (.0600) 1 (.0730) 2 (.0860) 3 (.0990) 4 (.1120) 5 (.1250) 6 (.1380) 8 (.1640) 10 (.1900) 12 (.2160) Machine Screw Size Number Inches

Nominal Fractional Diameter Inches

Nominal Metric Diameter Millimeters, Inches

Blank Overall Design Length

Thread Length

Square

Shank Square

Length Diameter

Size

No.

L

I

I 2

d 1

a

.052 .065 .078 .091 .104 .117 .130 .145 .171 .197 .223 .260 .323 .395 .448 .510 .573 .635 .709 .760 .823 .885

.065 .078 .091 .104 .117 .130 .145 .171 .197 .223 .260 .323 .395 .448 .510 .573 .635 .709 .760 .823 .885 .948

M1.6 M1.8

(.0630) (.0709)

1 1 1 1 1 1 1 1 1 1 2 2 2 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3

1.63 1.69 1.75 1.81 1.88 1.94 2.00 2.13 2.38 2.38 2.50 2.72 2.94 3.16 3.38 3.59 3.81 4.03 4.25 4.47 4.69 4.91 5.13 5.13 5.44 5.44 5.75 5.75 6.06 6.06 6.38 6.69 7.00 7.31 7.63 8.00 8.25 8.50 8.75 8.75 9.25 9.25 9.75 9.75

.31 .38 .44 .50 .56 .63 .69 .75 .88 .94

.19 .19 .19 .19 .19 .19 .19 .25 .25 .28 .31 .38 .44 .41 .44 .50 .56 .63 .69 .69 .75 .75 .81 .88 .88

.1410 .1410 .1410 .1410 .1410 .1410 .1410 .1680 .1940 .2200 .2550 .3180 .3810 .3230 .3670 .4290 .4800 .5420 .5900 .6520 .6970 .7600 .8000 .8960 .8960

.110 .110 .110 .110 .110 .110 .110 .131 .152 .165 .191 .238 .286 .242 .275 .322 .360 .406 .442 .489 .523 .570 .600 .672 .672 .766 .766 .831 .830 .925 .925 .979

M2 (.0787), M2.2 (.0866)

M2.5

(.0984)

M3

(.1181) (.1378) (.1575)

M3.5

M4

M4.5 (.1772), M5 (.1969)

1/4

(.2500) (.3125) (.3750) (.4375) (.5000) (.5625) (.6250) (.6875) (.7500) (.8125) (.8750) (.9375) (1.0000)

M6

(.2362)

1.00 1.13 1.25 1.44 1.66 1.66 1.81 1.81 2.00 2.00 2.22 2.22 2.50 2.50 2.56 2.56 2.56 2.56 3.00 3.00 3.00 3.19 3.19 3.56 3.56 3.56 3.56 4.00 4.00 4.00 4.00 4.00 4.56 4.56 4.56 4.56 4.94 4.94 5.31 5.31 5.31

5/16

M7 (.2756), M8 (.3150)

3/8

M10

(.3937)

7/16

1/2

M12 M14 M16 M18 M20 M22 M24 M25 M27

(.4724) (.5512) (.6299) (.7087) (.7874) (.8661) (.9449) (.9843) (1.0630)

9/16

5/8

11/16

3/4

13/16

7/8

15/16

.948 1.010 1.010 1.073 1.073 1.135 1.135 1.198 1.260 1.323 1.323 1.385 1.358 1.448 1.448 1.510 1.510 1.635 1.635 1.760 1.760 1.885 1.885 2.010 2.010 2.135 2.135 2.260 2.260 2.385 2.385 2.510 2.510 2.635 2.635 2.760 2.760 2.885 2.885 3.010 3.010 3.135 3.135 3.260 3.260 3.385 3.385 3.510 3.510 3.635 3.635 3.760 3.760 3.885 3.885 4.010

1

1-1/16 (1.0625)

1-1/8

(1.1250)

1-3/16 (1.1875)

M30

(1.1811)

1.00 1.00 1.06 1.06 1.13 1.13 1.13 1.25 1.25 1.38 1.38 1.44 1.44 1.50 1.50 1.56 1.56 1.63 1.63 1.75 1.75 2.00 2.00 2.13 2.13 2.25

1.0210 1.0210 1.1080 1.1080 1.2230 1.2230 1.3050 1.4300 1.5190 1.6440 1.7690 1.8940 2.0190 2.1000 2.2250 2.3500 2.4750 2.5430 2.6680 2.7930 2.8830 3.0080 3.1330 3.2170 3.3420 3.4670

Standard Tap Dimensions 1.198 1.260

1-1/4

(1.2500)

1-5/16 (1.3125)

M33

(1.2992)

1-3/8

(1.3750)

1-7/16 (1.4375)

M36

(1.4173)

1-1/2 1-5/8 1-3/4 1-7/8 2-1/8 2-1/4 2-3/8 2-1/2 2-5/8 2-3/4 2-7/8 3-1/8 3-1/4 3-3/8 3-1/2 3-5/8 3-3/4 3-7/8 2 3

(1.5000) (1.6250) (1.7500) (1.8750) (2.0000) (2.1250) (2.2500) (2.3750) (2.5000) (2.6250) (2.7500) (2.8750) (3.0000) (3.1250) (3.2500) (3.3750) (3.5000) (3.6250) (3.7500) (3.8750) (4.0000)

M39 M42

(1.5354) (1.6535)

1.072 1.139 1.233 1.327 1.420 1.514 1.575 1.669 1.762 1.856 1.907 2.001 2.095 2.162 2.256 2.350 2.413 2.506 2.600

M48

(1.8898)

M56

(2.2047)

M64

(2.5197)

M72

(2.8346)

M80

(3.1496)

10.00 10.00 10.25 10.25 10.50 10.50 10.75

M90

(3.5433)

4

M100

(3.9370)

12