ACME 29° Threading Inserts

Thread Form: American Acme 29°
Insert Style: Standard laydown threading insert
Versions: External and internal, right-hand and left-hand
Pitch Range: 16–4 TPI
Insert Sizes: IC 1/4″–5/8″
Grade: CP5225 — available in every size listed

29° trapezoidal Acme thread form for lead screws, jacks and power transmission.

Right Hand	Left Hand	Pitch (TPI)	Insert Size INSL (mm)	PDX (mm)	PDY (mm)	IC (in)
3ER16ACME	3EL16ACME	16	16.0	1.1	1.0	1/4
3ER14ACME	3EL14ACME	14	16.0	1.2	1.0	1/4
3ER12ACME	3EL12ACME	12	16.0	1.2	1.1	1/4
3ER10ACME	3EL10ACME	10	16.0	1.3	1.3	1/4
3ER8ACME	3EL8ACME	8	16.0	1.5	1.4	1/4
4ER6ACME	4EL6ACME	6	22.0	2.1	1.8	3/8
4ER5ACME	4EL5ACME	5	22.0	2.3	2.0	3/8
5ER4ACME	5EL4ACME	4	27.0	2.7	2.4	5/8

Right Hand	Left Hand	Pitch (TPI)	Insert Size INSL (mm)	PDX (mm)	PDY (mm)	IC (in)
3NR16ACME	3NL16ACME	16	16.0	1.1	1.0	1/4
3NR14ACME	3NL14ACME	14	16.0	1.2	1.0	1/4
3NR12ACME	3NL12ACME	12	16.0	1.2	1.1	1/4
3NR10ACME	3NL10ACME	10	16.0	1.3	1.3	1/4
3NR8ACME	3NL8ACME	8	16.0	1.5	1.4	1/4
4NR6ACME	4NL6ACME	6	22.0	2.1	1.8	3/8
4NR5ACME	4NL5ACME	5	22.0	2.3	2.0	3/8
5NR4ACME	5NL4ACME	4	27.0	2.7	2.4	5/8

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	—