Page 182 - Carmex - Inch Catalog 2018-19 Rev. B

®
Mill - Thread Inserts

NPT

Conical pipe thread inserts are one-
sided and may be used for both
External and Internal threading.

Insert Size = A
Pitch
TPI 12 mm 14 mm 21 mm 30 mm 40 mm
.472 .551 .827 1.181 1.575
18 12-18 NPT 14-18 NPT
14 14-14 NPT 21-14 NPT
11.5 21-11.5 NPT 30-11.5 NPT 40-11.5 NPT
8 30- 8 NPT 40- 8 NPT
Order example: 30-11.5 NPT MT7

NPTF

Conical pipe thread inserts are one-
sided and may be used for both
External and Internal threading.

Insert Size = A
Pitch
TPI 12 mm 14 mm 21 mm 30 mm 40 mm
.472 .551 .827 1.181 1.575
18 12-18 NPTF 14-18 NPTF
14 14-14 NPTF 21-14 NPTF
11.5 21-11.5 NPTF 30-11.5 NPTF 40-11.5 NPTF
8 30- 8 NPTF 40- 8 NPTF
Order example: 21-14 NPTF MT7
For conical preparation end mills see page 253

176