NPTF 60° Threading Inserts

Thread Form: American Standard Dryseal Taper Pipe (NPTF) 60°
Insert Style: Standard laydown threading insert
Versions: External and internal, right-hand and left-hand
Pitch Range: 28–8 TPI
Insert Sizes: IC 5/32″–3/8″
Grade: CP5225 — available in every size listed

60° Dryseal taper pipe thread (1°47′ taper) that seals by crest-and-root contact without sealant.

Right Hand	Left Hand	Pitch (TPI)	Insert Size INSL (mm)	PDX (mm)	PDY (mm)	IC (in)
2ER27NPTF	2EL27NPTF	27	11.0	0.8	0.7	1/4
2ER18NPTF	2EL18NPTF	18	11.0	1.0	0.8	1/4
2ER14NPTF	2EL14NPTF	14	11.0	1.0	0.8	1/4
3ER27NPTF	3EL27NPTF	28	16.0	0.8	0.7	3/8
3ER18NPTF	3EL18NPTF	18	16.0	1.0	0.8	3/8
3ER14NPTF	3EL14NPTF	14	16.0	1.0	0.8	3/8
3ER11.5NPTF	3EL11.5NPTF	11.5	16.0	1.5	1.1	3/8
3ER8NPTF	3EL8NPTF	8	16.0	1.8	1.2	3/8

Right Hand	Left Hand	Pitch (TPI)	Insert Size INSL (mm)	PDX (mm)	PDY (mm)	IC (in)
1.2NR27NPTF	1.2NL27NPTF	27	6.0	0.6	0.6	5/32
1.5NR27NPTF	1.5NL27NPTF	27	8.0	0.6	0.6	3/16
1.5NR18NPTF	1.5NL18NPTF	18	8.0	0.6	0.6	3/16
2NR27NPTF	2NL27NPTF	27	11.0	0.8	0.7	1/4
2NR18NPTF	2NL18NPTF	18	11.0	1.0	0.8	1/4
2NR14NPTF	2NL14NPTF	14	11.0	1.0	0.8	1/4
3NR27NPTF	3NL27NPTF	28	16.0	0.8	0.7	3/8
3NR18NPTF	3NL18NPTF	18	16.0	1.0	0.8	3/8
3NR14NPTF	3NL14NPTF	14	16.0	1.0	0.8	3/8
3NR11.5NPTF	3NL11.5NPTF	11.5	16.0	1.5	1.1	3/8
3NR8NPTF	3NL8NPTF	8	16.0	1.8	1.2	3/8

Workpiece Material	CP5230	CP5225	CP4324	NA10
P — Steel	Light intermittent — preferred	Light intermittent — preferred	Light intermittent — preferred	—
M — Stainless Steel	Light intermittent — alternative	Light intermittent — preferred	Light intermittent — alternative	—
K — Cast Iron	Light intermittent — preferred	Light intermittent — alternative	Light intermittent — preferred	—
N — Non-Ferrous Metals	—	—	—	Continuous — preferred
S — Heat-Resistant Alloys	—	—	—	—
H — Hardened Materials	—	Light intermittent — alternative	Light intermittent — preferred	—