D38999 Size #20 Socket PCB Contacts

D38999 pc tail 20 socket contact

Product Description

D38999 PC Board ContactsPC Tail shielded contacts provide a cost effective packag­ing solution for limited space applications where connec­tors are attached to printed circuit boards. High reliability is assured with factory pre-assembled contacts and stan­dardized termination to the board. PC Tail contacts are available for MIL-DTL-38999 Series III.

For improved performance we recommend Milnec TX00 (D38999/20) and TX07 (D38999/24) style receptacles, which are fully compatible will all MIL-DTL-38999 Series III stye connectors.


  • SAE-AS39029: Socket meets or exceeds the requirements and specifications of M39029/56-351, except as indicated
  • Contact Material: Suitable copper alloy
  • Hood Material: Stainless Steel
  • Contact Finish: Gold plate per IAW ASTM B488-01, Type II, Code C, Class 1.25 (.000050 Min) over nickel IAW AMS QQ-N-290, Class 1, .000050-.000100 thick
  • Hood Finish: Passivated

Data Sheet

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D38999 Series III – #20 PCB Socket Contact Dimensions

Part NumberPopularABCD DiaShoulder StyleE (Tail Extension)
TXST20-101 1.284 (32.61).406 (10.31).257 (6.53).019 (.48)Beveled.133 (3.38)
TXST20-1021.360 (34.52).293 (7.44).445 (11.30).019 (.48)Beveled.208 (5.28)
TXST20-103 1.471 (37.363.474 (12.039.376 (9.5504.019 (.48)Beveled.320 (8.13)
TXST20-1041.494 (37.95).428 (10.87).445 (11.30).019 (.48)Beveled.343 (8.71)
TXST20-105 1.546 (39.27).480 (12.19).445 (11.30).019 (.48)Beveled.395 (10.03)
TXST20-1061.701 (43.21).635 (16.13).445 (11.30).019 (.48)Beveled.550 (13.97)

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Extension Tolerances: ± 0.02 (0.5mm)