Gagemaker's standard ball contact points are manufactured with spherical chrome balls with threaded shanks of 4-48 UNF.
Contact sizes are matched closely to thread inspection wire sizes. The contact diameters listed are used in the TDWIN Thread Disk for Windows software program for pitch diameter inspection.
| 90-T531TC | Acme or Stub Acme Thread | 1 | POA |
| 90-T344TC | Acme or Stub Acme Thread | 1.5 | POA |
| 90-T266TC | Acme or Stub Acme Thread | Acme or Stub Acme Thread 2 | POA |
| 90-T219TC | 2.5 | POA | |
| 90-T188TC | Acme or Stub Acme Thread | 3 | POA |
| 90-T144TC | Acme or Stub Acme Thread | 3.5 | POA |
| 90-T128TC | Acme or Stub Acme Thread | 4 | POA |
| 90-T105TC | 5 | POA | |
| 90-T090TC | 6, 7 | POA | |
| 90-T062TC | 8 | POA | |
| 90-T050TC | 10 | POA | |
| 90-T041TC | 12 / 14 | POA | |
| 90-T032TC | 16 | POA |
