206125-1 is a standard numbering plug designed for CPC (Circular Plastic Connector) circular connectors in the 17-28 arrangement configuration. This plug features a shell size 17 with 28 contact positions and accepts Size 20 DM or DF socket contacts. Key dimensions include A: 1.040 in (26.42 mm), B: 1.050 in (26.67 mm), C: 0.188 in (4.78 mm), D: 1.125 in (28.58 mm), and E: 1.435 in (36.45 mm), with a thread size of 15/16-20 UNEF-2A. The connector operates over a temperature range of -40°C to +105°C and is UL 94V-0 rated. It is commonly used in commercial signal and power applications where quick connect/disconnect capability with thread assist and positive detent coupling is required.