ABUT 7°/45° Threading Inserts

Thread Form: American Buttress 7°/45°
Insert Style: Standard laydown threading insert
Versions: External and internal, right-hand and left-hand
Pitch Range: 20–6 TPI
Insert Sizes: IC 1/4″–5/8″
Grade: CP5225 — available in every size listed

7°/45° American Buttress thread form for high axial loads in one direction, such as breech locks, vises and oilfield connections.

Right Hand	Left Hand	Pitch (TPI)	Insert Size INSL (mm)	PDX (mm)	PDY (mm)	IC (in)
2ER20ABUT	2EL20ABUT	20	11.0	1.4	1.0	1/4
2ER16ABUT	2EL16ABUT	16	11.0	1.9	1.3	1/4
3ER20ABUT	3EL20ABUT	20	16.0	1.4	1.0	3/8
3ER16ABUT	3EL16ABUT	16	16.0	1.9	1.3	3/8
3ER12ABUT	3EL12ABUT	12	16.0	2.0	1.4	3/8
3ER10ABUT	3EL10ABUT	10	16.0	2.3	1.5	3/8
4ER8ABUT	4EL8ABUT	8	22.0	3.2	2.0	5/8
4ER6ABUT	4EL6ABUT	6	22.0	3.5	2.2	5/8

Right Hand	Left Hand	Pitch (TPI)	Insert Size INSL (mm)	PDX (mm)	PDY (mm)	IC (in)
2NR20ABUT	2NL20ABUT	20	11.0	1.4	1.0	1/4
2NR16ABUT	2NL16ABUT	16	11.0	1.9	1.3	1/4
3NR20ABUT	3NL20ABUT	20	16.0	1.4	1.0	3/8
3NR16ABUT	3NL16ABUT	16	16.0	1.9	1.3	3/8
3NR12ABUT	3NL12ABUT	12	16.0	2.0	1.4	3/8
3NR10ABUT	3NL10ABUT	10	16.0	2.3	1.5	3/8
4NR8ABUT	4NL8ABUT	8	22.0	3.2	2.0	5/8
4NR6ABUT	4NL6ABUT	6	22.0	3.5	2.2	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	—