D38999 Coax & Twinax Contacts

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Standard D38999 Type RF Contacts & Tooling Charts

D38999 Coax Contacts

Additional Resources

Data Sheets

  • D38999 Contacts (Power, Thermocouple, Coax, Twinax, Fiber Optic, PCB tail)
  • D38999 Catalog (15 MB) – For contact information please reference pages A-16 – A-18, and B-9 – B-14.

Description

Coaxial contacts are used in a wide range of military and aerospace connectors for analog radio frequency or microwave applications. Twinax and quadrax are high-speed differential impedance contacts used for advanced digital communications. Milnec’s D38999 compatible TX series connectors can be easily fitted with these specialized contacts. See the table below for contact and tooling information.

Compatibility

Compatible BrandsPlugsReceptacles
MIL-DTL-38999 Series IIID38999/26D38999/20, D38999/24
Aero/ConesysAE326AE320, AE324
AmphenolTV06, TVS06TVP00, TVPS00, TVP07, TVPS07
DeutschDTS26DTS20, DTS24
ITT CannonKJA6KJA0, KJA7
Souriau8D5, 8DS06G8D0, 8D1, 8D7, 8DS00, 8DS07

Contact Performance: Sizes #12 & #16

  • Dielectric withstanding voltage:
    Size 12: 1,000 VAC Rms at sea level, 250 VAC Rms at 50,000 ft
    Size 16: 800 VAC Rms at sea level, 250 VAC Rms at 50,000 ft
  • Typical VSWR: 1.5:1 maximum up to 700 MHz and 500 MHz for properly installed size 12 and 16 coaxial contacts in 38999 Series I, II, & III
  • Insulation resistance: 5,000 megohms minimum at 25°C
  • Contact resistance: See MIL-C-39029/27, /28, /75, /76, /77, /78

    • Contact Performance: Size #8

  • Dielectric withstanding voltage:
    1,300 VAC Rms at sea level, 250 VAC Rms at 50,000 ft
  • Typical VSWR when terminated to specified 50 ohm cable:
    1.5:1 maximum up to 3 GHz
  • Insulation resistance: 5,000 megohms minimum at 25°C
  • Contact resistance: See MIL-C-39029/59, /60

    • Coax Contacts

    CableContact SizePart NumberCrimping ToolsPositionersInstallation Tools
    PinSocketInnerOuterInnerOuterInsertionExtraction
    RG-178B/U#16TXPX16-002TXSX16-003TK201TK401TP235TP402TN807TX808
    RG-196A/U#16TXPX16-002TXSX16-003TK201TK401TP235TP402TN807TX808
    M17/093-RG178#16TXPX16-002TXSX16-003TK201TK401TP235TP402TN807TX808
    M17/169-00001#16TXPX16-002TXSX16-003TK201TK401TP235TP402TN807TX808
    RG-161/U#12TXPX12-006TXSX12-007TK201TK3101TP234TP3102TN809TX810
    RG-174A/U#12TXPX12-006TXSX12-007TK201TK3101TP234TP3102TN809TX810
    RG-179B/U#12TXPX12-006TXSX12-007TK201TK3101TP234TP3102TN809TX810
    RG-187A/U#12TXPX12-006TXSX12-007TK201TK3101TP234TP3102TN809TX810
    RG-188A/U#12TXPX12-006TXSX12-007TK201TK3101TP234TP3102TN809TX810
    RG-316/U#12TXPX12-006TXSX12-007TK201TK3101TP234TP3102TN809TX810
    Haveg 8100207#12TXPX12-006TXSX12-007TK201TK3101TP234TP3102TN809TX810
    Times (HS-179) AA3248#12TXPX12-006TXSX12-007TK201TK3101TP234TP3102TN809TX810
    Teledyne 11299#12TXPX12-006TXSX12-007TK201TK3101TP234TP3102TN809TX810
    Thermax 75-738-BCCWXE#12TXPX12-006TXSX12-007TK201TK3101TP234TP3102TN809TX810
    Tensolite 3088/L707YX-1#12TXPX12-006TXSX12-007TK201TK3101TP234TP3102TN809TX810
    M17/119-RG174#12TXPX12-006TXSX12-007TK201TK3101TP234TP3102TN809TX810
    M17/094-RG179#12TXPX12-006TXSX12-007TK201TK3101TP234TP3102TN809TX810
    M17/113-RG316#12TXPX12-006TXSX12-007TK201TK3101TP234TP3102TN809TX810
    RG-180B/U#12TXPX12-008TXSX12-009TK201TK3101TP234TP3102TN809TX810
    RG-195A/U#12TXPX12-008TXSX12-009TK201TK3101TP234TP3102TN809TX810
    Raychem 9528A1318#12TXPX12-008TXSX12-009TK201TK3101TP234TP3102TN809TX810
    Raychem 9527D1514-2L#12TXPX12-008TXSX12-009TK201TK3101TP234TP3102TN809TX810
    Microdot 293-3922#12TXPX12-008TXSX12-009TK201TK3101TP234TP3102TN809TX810
    M17/095-RG180#12TXPX12-008TXSX12-009TK201TK3101TP234TP3102TN809TX810
    M17/113-RG316#12TXPX12-010TXSX12-011TK992TK501TP1360TP503TN809TX810
    M17/094-RG179#12TXPX12-010TXSX12-011TK992TK501TP1360TP503TN809TX810
    RG-180B/U#8TXPX08-012TXSX08-013TK201TK501TP231TP505–TX814
    RG-195A/U#8TXPX08-012TXSX08-013TK201TK501TP231TP505–TX814
    Raychem 9527D1514-2L#8TXPX08-012TXSX08-013TK201TK501TP231TP505–TX814
    M17/095-RG180#8TXPX08-012TXSX08-013TK201TK501TP231TP505–TX814

    Twinax Contacts

    CableContact SizePart NumberCrimping ToolsPositionersInstallation Tools
    PinSocketInnerOuterInnerOuterInsertionExtraction
    M17/176-00002#8TXPW08-002TXSW08-003TK201TK501TP231TP505–TX2648

    Contact your distributor for D38999 quadrax options.