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NPT<br />

Internal / External<br />

30°<br />

30°<br />

Internal<br />

h<br />

Le<br />

D<br />

D2<br />

90° 1º47’ 1.47’<br />

External<br />

Defined by: USAS B2.1:1968<br />

Tolerance class : Standard NPT<br />

TM Solid Carbide - Helical Flutes<br />

L<br />

Standard - Helical Flute<br />

Thread<br />

Pitch<br />

Ordering Code<br />

Dimensions Inch<br />

No. of Flutes<br />

Teeth<br />

Bore Dia.<br />

TMS Helical<br />

tpi<br />

Internal + External<br />

D<br />

D2<br />

L<br />

Le<br />

z<br />

Inch<br />

1/16"X27<br />

27<br />

H3/8".209"-EI27NPTTM...<br />

3/8"<br />

.209<br />

2.874<br />

.370<br />

3<br />

10<br />

.248<br />

1/8"X27<br />

27<br />

H1/2".295"-EI27NPTTM...<br />

1/2"<br />

.295<br />

3.268<br />

.370<br />

4<br />

10<br />

.335<br />

1/4"X18<br />

18<br />

H5/8".370"-EI18NPTTM...<br />

5/8"<br />

.370<br />

3.622<br />

.555<br />

4<br />

10<br />

.437<br />

3/8"X18<br />

18<br />

H5/8".500"-EI18NPTTM...<br />

5/8"<br />

.500<br />

3.622<br />

.555<br />

4<br />

10<br />

.571<br />

1/2"X14,3/4"X14<br />

14<br />

H3/4".610"-EI14NPTTM...<br />

3/4"<br />

.610<br />

4.094<br />

1.000<br />

5<br />

14<br />

.705, .921<br />

1"-2"X11.5<br />

11.5<br />

H3/4".746"-EI11.5NPTTM...<br />

3/4"<br />

.746<br />

4.094<br />

1.303<br />

5<br />

15<br />

1.158, 2.213<br />

2 1/2"X8<br />

8<br />

H3/4".746"-EI8NPTTM...<br />

3/4"<br />

.746<br />

4.094<br />

1.500<br />

4<br />

12<br />

2.618<br />

NPTF (Dry Seal)<br />

Internal / External<br />

30°<br />

30°<br />

Internal<br />

h<br />

Le<br />

D<br />

D2<br />

90° 1º47’ 1.47’<br />

External<br />

Defined by: ANSI 1.20.3-1976<br />

Tolerance class : Standard NPTF<br />

TM Solid Carbide - Helical Flutes<br />

L<br />

Standard - Helical Flute<br />

Thread<br />

Pitch<br />

Ordering Code<br />

Dimensions Inch<br />

No. of Flutes<br />

Teeth<br />

Bore Dia.<br />

tpi<br />

Internal + External<br />

D<br />

D2<br />

L<br />

Le<br />

z<br />

Inch<br />

1/16"X27<br />

27<br />

H3/8".209"-EI27NPTFTM...<br />

3/8"<br />

.209<br />

2.874<br />

.370<br />

3<br />

10<br />

.248<br />

1/8"X27<br />

27<br />

H1/2".295"-EI27NPTFTM...<br />

1/2"<br />

.295<br />

3.268<br />

.370<br />

4<br />

10<br />

.331<br />

1/4"X18<br />

18<br />

H5/8".370"-EI18NPTFTM...<br />

5/8"<br />

.370<br />

3.622<br />

.555<br />

4<br />

10<br />

.437<br />

3/8"X18<br />

18<br />

H5/8".500"-EI18NPTFTM...<br />

5/8"<br />

.500<br />

3.622<br />

.555<br />

4<br />

10<br />

.579<br />

1/2"X14,3/4"X14<br />

14<br />

H3/4".610"-EI14NPTFTM...<br />

3/4"<br />

.610<br />

4.094<br />

1.000<br />

5<br />

14<br />

.705, .921<br />

1"-2"X11.5<br />

11.5<br />

H3/4".746"-EI11.5NPTFTM...<br />

3/4"<br />

.746<br />

4.094<br />

1.303<br />

5<br />

15<br />

1.158, 2.213<br />

2 1/2"X8<br />

8<br />

H3/4".746"-EI8NPTFTM...<br />

3/4"<br />

.746<br />

4.094<br />

1.500<br />

4<br />

12<br />

2.638<br />

241

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