Graphite Taps

Offering orbiting and non-orbiting tapping electrodes for threaded EDM applications.

EDM Applications:

Used to burn threads into hardened/exotic materials

Tapping electrodes (orbiting and non-orbiting) are available in both english and metric sizes. Choose from graphite or copper impregnated graphite.

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STANDARD TAPS - ENGLISH

THREAD

PITCH DIA.

SHANK DIA.

FLUSH HOLE

4-40

.0020"

.1090"

--

5-40

.0020"

.1250"

--

6-32

.0030"

.1400"

--

8-32

.0030"

.1660"

.0625"

10-24

.0030"

.1870"

.0625"

10-32

.0030"

.1870"

.0625"

1/4-20

.0040"

.2500"

.0625"

1/4-28

.0040"

.2500"

.0625"

5/16-18

.0040"

.3120"

.1250"

5/16-24

.0040"

.3120"

.1563"

3/8-16

.0040"

.3750"

.1563"

3/8-24

.0040"

.3750"

.1875"

7/16-14

.0050"

.4370"

.1875"

7/16-20

.0050"

.4370"

.2500"

1/2-13

.0050"

.5000"

.2500"

1/2-20

.0050"

.5000"

.2500"

ORBITAL TAPS - ENGLISH

THREAD SIZE

PITCH DIA.

SHANK DIA.

FLUSH HOLE

4-40

.0890"

.0780"

--

5-40

.1015"

.0910"

--

6-32

.1065"

.0960"

--

8-32

.1360"

.1250"

--

10-24

.1470"

.1370"

--

10-32

.1590"

.1490"

--

1/4-20

.2010"

.1900"

.0625"

1/4-28

.2130"

.2030"

.0625"

5/16-18

.2570"

.2470"

.0938"

5/16-24

.2720"

.2620"

.0938"

3/8-16

.3125"

.3020"

.1250"

3/8-24

.3320"

.3220"

.1250"

7/16-14

.3680"

.3580"

.1875"

7/16-20

.3906"

.3790*

.1875"

1/2-13

.4218"

.4110"

.2500"

1/2-20

.4530*

.4430"

.2500"

STANDARD TAPS - METRIC

THREAD SIZE

TAP DRILL

DRILL DIA.

FLUSH HOLE

M2.5 x 0.45

--

--

--

M3.0 x 0.50

2.50 mm

.0984"

--

M3.5 x 0.60

2.90 mm

.1142"

--

M4.0 x 0.70

3.30 mm

.1299"

.0625"

M4.5 x 0.75

3.70 mm

.1770"

.0625"

M5.0 x 0.80

4.20 mm

.1654"

.0625"

M6.0 x 1.00

5.00 mm

.1969"

.0625"

M7.0 x 1.00

6.00 mm

.2362"

.0938"

M8.0 x 1.25

6.75 mm

.2657"

.1250"

M10.0 x 1.50

8.50 mm

.3346"

.1563"

M12.0 x 1.75

10.20 mm

.4016"

.2500"

M14.0 x 2.00

12.00 mm

.4724"

.2500"

M16.0 x 2.00

14.00 mm

.5512"

.2500"

M18.0 x 2.50

15.50 mm

.6102"

.2500"

M20.0 x 2.50

17.50 mm

.6890"

.2500"

ORBITAL TAPS - METRIC

THREAD SIZE

PITCH DIA.

SHANK DIA.

FLUSH HOLE

M2.5 x 0.45

--

--

--

M3.0 x 0.50

2.50 mm

.0984"

--

M3.5 x 0.60

2.90 mm

.1142"

--

M4.0 x 0.70

3.30 mm

.1299"

.0625"

M4.5 x 0.75

3.70 mm

.1770"

.0625"

M5.0 x 0.80

4.20 mm

.1654"

.0625"

M6.0 x 1.00

5.00 mm

.1969"

.0625"

M7.0 x 1.00

6.00 mm

.2362"

.0938"

M8.0 x 1.25

6.75 mm

.2657"

.1250"

M10.0 x 1.50

8.50 mm

.3346"

.1563"

M12.0 x 1.75

10.20 mm

.4016"

.2500"

M14.0 x 2.00

12.00 mm

.4724"

.2500"

M16.0 x 2.00

14.00 mm

.5512"

.2500"

M18.0 x 2.50

15.50 mm

.6102"

.2500"

M20.0 x 2.50

17.50 mm

.6890"

.2500"