NPT 60° Threading Inserts

Thread Form: American Standard Taper Pipe (NPT) 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° American Standard taper pipe thread (1°47′ taper) for pipe fittings and pressure connections.

Right Hand	Left Hand	Pitch (TPI)	Insert Size INSL (mm)	PDX (mm)	PDY (mm)	IC (in)
2ER27NPT	2EL27NPT	27	11.0	0.8	0.7	1/4
2ER18NPT	2EL18NPT	18	11.0	1.0	0.8	1/4
2ER14NPT	2EL14NPT	14	11.0	1.0	0.8	1/4
3ER27NPT	3EL27NPT	28	16.0	0.8	0.7	3/8
3ER18NPT	3EL18NPT	18	16.0	1.0	0.8	3/8
3ER14NPT	3EL14NPT	14	16.0	1.0	0.8	3/8
3ER11.5NPT	3EL11.5NPT	11.5	16.0	1.5	1.1	3/8
3ER8NPT	3EL8NPT	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)
1.2NR27NPT	1.2NL27NPT	27	6.0	0.6	0.6	5/32
1.5NR27NPT	1.5NL27NPT	27	8.0	0.6	0.6	3/16
1.5NR18NPT	1.5NL18NPT	18	8.0	0.6	0.6	3/16
2NR27NPT	2NL27NPT	27	11.0	0.8	0.7	1/4
2NR18NPT	2NL18NPT	18	11.0	1.0	0.8	1/4
2NR14NPT	2NL14NPT	14	11.0	1.0	0.8	1/4
3NR27NPT	3NL27NPT	28	16.0	0.8	0.7	3/8
3NR18NPT	3NL18NPT	18	16.0	1.0	0.8	3/8
3NR14NPT	3NL14NPT	14	16.0	1.0	0.8	3/8
3NR11.5NPT	3NL11.5NPT	11.5	16.0	1.5	1.1	3/8
3NR8NPT	3NL8NPT	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	—