- Standard / size
- API · 22
- Pitch / hand
- 4API 382 · Right
External
22ER 4API 382Internal
22NR 4API 382External & internal designation matrix
API Threading
Compare matching external and internal thread turning insert designations by standard, insert size, pitch, and handedness. Select the exact designation when requesting a quotation.
- Designations
- 22
- Available grade
- FH
Selection matrix
Match external and internal inserts
A dash means the source catalog does not list a matching designation for that side. No counterpart is inferred.
- Standard / size
- API · 22
- Pitch / hand
- 4API 383 · Right
External
22ER 4API 383Internal
22NR 4API 383- Standard / size
- API · 22
- Pitch / hand
- 4API 502 · Right
External
22ER 4API 502Internal
22NR 4API 502- Standard / size
- API · 22
- Pitch / hand
- 4API 503 · Right
External
22ER 4API 503Internal
22NR 4API 503- Standard / size
- API · 22
- Pitch / hand
- 5API 403 · Right
External
22ER 5API 403Internal
22NR 5API 403- Standard / size
- API · 22
- Pitch / hand
- 6API 551 · Right
External
22ER 6API 551Internal
22NR 6API 551- Standard / size
- API · 27
- Pitch / hand
- 4API 382 · Right
External
27ER 4API 382Internal
27NR 4API 382- Standard / size
- API · 27
- Pitch / hand
- 4API 383 · Right
External
27ER 4API 383Internal
27NR 4API 383- Standard / size
- API · 27
- Pitch / hand
- 4API 502 · Right
External
27ER 4API 502Internal
27NR 4API 502- Standard / size
- API · 27
- Pitch / hand
- 4API 503 · Right
External
27ER 4API 503Internal
27NR 4API 503- Standard / size
- API · 27
- Pitch / hand
- 5API 403 · Right
External
27ER 5API 403Internal
27NR 5API 403Need help confirming a threading designation?
Send the thread standard, size, pitch, hand, quantity, and delivery destination.