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MIL-DTL-38999



Connectors, Electrical, Circular, Miniature, High Density, Quick Disconnect (Bayonet, Threaded, and Breech Coupling), Environment Resistant, Removable Crimp and Hermetic Solder Contacts, General Specification for (w/Amendment 2) FSC: 5935

This specification covers four series of miniature, high density, bayonet, threaded, or breech coupling, circular, environment resistant, electrical connectors using removable crimp or fixed hermetic solder contacts, and are capable of operation within a temperature range of -65°C to +200°C.



Points of Contact:

Circular Connector Group Phone: 614-692-7702 Email: CircularConnector@dla.mil

Document Downloads

  • MIL-DTL-38999
  • Connectors, Electrical, Circular, Miniature, High Density, Quick Disconnect (Bayonet, Threaded, and Breech Coupling), Environment Resistant, Removable Crimp and Hermetic Solder Contacts, General Specification for (w/Amendment 2) Revision: L, Dated: 10 May 2012 File Name: dtl38999.pdf, File Size: 1708 kb


  • MIL-DTL-38999M (2nd DRAFT) (Initial Draft) 
  • Connectors, Electrical, Circular, Miniature, High Density, Quick Disconnect (Bayonet, Threaded, and Breech Coupling), Environment Resistant, Removable Crimp and Hermetic Solder Contacts, General Specification For
    Dated: 07 January 2014
    File name: iddtl38999.pdf, File Size: 1971 kb

  • MIL-DTL-38999M Supplement 1 (Initial Draft) 
  • List of MIL-DTL-38999 Associated Specifications
    Dated: 06 June 2013
    File name: iddtl38999sup1.pdf, File Size: 97 kb

  • MIL-DTL-38999L Supplement 1A 
  • List of MIL-DTL-38999 Associated Specifications
    Dated: 10 May 2012
    File name: dtl38999sup1.pdf, File Size: 33 kb

  • MIL-DTL-38999/9B 
  • Connectors, Electrical, Circular, Receptacle, Dummy Stowage, Bayonet Coupling, (MIL-DTL-27599 Series I and MIL-DTL-38999 Series I)
    Dated: 14 February 2014
    File name: dtl38999ss9.pdf, File Size: 70 kb

  • MIL-DTL-38999/10B 
  • Connectors, Electrical, Circular, Receptacle, Dummy Stowage, Bayonet Coupling, (MIL-DTL-27599, Series II and MIL-DTL-38999, Series II)
    Dated: 15 June 2012
    File name: dtl38999ss10.pdf, File Size: 174 kb

  • MIL-DTL-38999/20G w/Amendment 2 
  • Connectors, Electrical, Circular, Receptacle, Wall Mounting Flange, Removable Crimp Contacts, Series III, Metric
    Dated: 31 October 2011
    File name: dtl38999ss20.pdf, File Size: 47 kb

  • MIL-DTL-38999/21C 
  • Connectors, Electrical, Circular, Threaded, Receptacle, Box Mounting Flange, Hermetic, Hermetic Solder Contacts, Series III, Metric
    Dated: 10 July 2008
    File name: dtl38999ss21.pdf, File Size: 61 kb

  • MIL-DTL-38999/22H 
  • Connectors, Electrical, Circular, Receptacle, Threaded, Dummy Stowage, Series III, Metric
    Dated: 14 June 2013
    File name: dtl38999ss22.pdf, File Size: 213 kb

  • MIL-DTL-38999/22J (Initial Draft) 
  • Connectors, Electrical, Circular, Receptacle, Threaded, Dummy Stowage, Series III, Metric
    Dated: 20 November 2014
    File name: iddtl38999ss22.pdf, File Size: 298 kb

  • MIL-DTL-38999/23C 
  • Connectors, Electrical, Circular, Threaded, Receptacle, Jam-Nut Mounting, Hermetic, Hermetic Solder Contacts, Series III, Metric
    Dated: 10 July 2008
    File name: dtl38999ss23.pdf, File Size: 102 kb

  • MIL-DTL-38999/24J 
  • Connectors, Electrical, Circular, Receptacle, Threaded, Jam-Nut Mounting, Removable Crimp Contacts, Series III, Metric
    Dated: 31 October 2011
    File name: dtl38999ss24.pdf, File Size: 101 kb

  • MIL-DTL-38999/25C 
  • Connector, Electrical, Circular, Threaded, Receptacle, Solder Mounting, Hermetic, Hermetic Solder Contacts, Series III, Metric
    Dated: 29 August 2011
    File name: dtl38999ss25.pdf, File Size: 37 kb

  • MIL-DTL-38999/26G 
  • Connectors, Electrical, Plug, Circular, Straight, Removable Crimp Contacts, Series III, Metric
    Dated: 31 October 2011
    File name: dtl38999ss26.pdf, File Size: 42 kb

  • MIL-DTL-38999/27C 
  • Connectors, Electrical, Circular, Threaded, Receptacle, Weld Mounting, Hermetic, Hermetic Solder Contacts, Series III, Metric
    Dated: 10 July 2008
    File name: dtl38999ss27.pdf, File Size: 111 kb

  • MIL-DTL-38999/28G 
  • Connectors, Electrical, Circular, Nut, Hexagon, Connector Mounting, Series III and IV, Metric
    Dated: 30 May 2008
    File name: dtl38999ss28.pdf, File Size: 88 kb

  • MIL-DTL-38999/29C 
  • Connectors, Electrical, Circular, Threaded, Plug, Lanyard Release, Fail-Safe, Removable Crimp Contacts, Pins, Series III, Metric
    Dated: 12 March 2014
    File name: dtl38999ss29.pdf, File Size: 65 kb

  • MIL-DTL-38999/30C 
  • Connectors, Electrical, Circular, Threaded, Plug, Lanyard Release, Fail-Safe, Removable Crimp Contacts, Sockets, Series III, Metric
    Dated: 12 March 2014
    File name: dtl38999ss30.pdf, File Size: 65 kb

  • MIL-DTL-38999/31E 
  • Connectors, Electrical, Circular, Threaded, Plug, Lanyard Release, Fail-Safe, Removable Crimp Contacts, Sockets, Shell Size 25, Series III, Metric
    Dated: 12 March 2014
    File name: dtl38999ss31.pdf, File Size: 195 kb

  • MIL-DTL-38999/32E 
  • Connector, Electrical Circular, Cover, Protective, Plug, Series III, Metric
    Dated: 04 October 2013
    File name: dtl38999ss32.pdf, File Size: 118 kb

  • MIL-DTL-38999/33E 
  • Connector, Electrical Circular, Cover, Protective, Receptacle, Series III, Metric
    Dated: 31 October 2011
    File name: dtl38999ss33.pdf, File Size: 109 kb

  • MIL-DTL-38999/34D 
  • Connectors, Receptacle, Electrical, Circular, Breakaway Jamnut Mounting, Removable Crimp Contacts, Sockets, Series III, Shell Size 25, Metric
    Dated: 10 July 2008
    File name: dtl38999ss34.pdf, File Size: 87 kb

  • MIL-DTL-38999/35D 
  • Connectors, Receptacle, Electrical, Circular, Breakaway Wall Mounting Flange, Removable Crimp Contacts, Sockets, Series III, Shell Size 25, Metric
    Dated: 10 July 2008
    File name: dtl38999ss35.pdf, File Size: 45 kb

  • MIL-DTL-38999/36 
  • Connectors, Electrical, Circular, Threaded, Plug, Lanyard Release, Fail-Safe, Removable Crimp Contacts, Pins, Shell Size 25, Series III, Metric
    Dated: 30 November 2006
    File name: dtl38999ss36.pdf, File Size: 452 kb

  • MIL-DTL-38999/40B 
  • Connectors, Electrical, Circular, Receptacle, Wall Mounting Flange, Breech Coupling, Removable Crimp Contacts, Series IV, Metr
    Dated: 14 August 2009
    File name: dtl38999ss40.pdf, File Size: 40 kb

  • MIL-DTL-38999/41B 
  • Connectors, Electrical, Circular, Receptacle, Box Mounting Flange, Hermetic, Breech Coupling, Hermetic Solder Contacts, Series IV, Metric
    Dated: 08 September 2010
    File name: dtl38999ss41.pdf, File Size: 41 kb

  • MIL-DTL-38999/42B 
  • Connectors, Electrical, Circular, Receptacle, Box Mounting Flange, Breech Coupling, Removable Crimp Contacts, Series IV, Metri
    Dated: 14 August 2009
    File name: dtl38999ss42.pdf, File Size: 61 kb

  • MIL-DTL-38999/43B 
  • Connectors, Electrical, Circular, Receptacle, Jam Nut Mounting, Hermetic, Breech Coupling, Hermetic Solder Contacts, Series IV, Metric
    Dated: 08 September 2010
    File name: dtl38999ss43.pdf, File Size: 53 kb

  • MIL-DTL-38999/44D w/Amendment 1 
  • Connectors, Electrical, Circular, Receptacle, Jam-Nut Mounting, Breech Coupling, Removable Crimp Contacts, Series IV, Metric
    Dated: 23 March 2011
    File name: dtl38999ss44.pdf, File Size: 74 kb

  • MIL-DTL-38999/45B 
  • Connectors, Electrical, Circular, Receptacle, Solder Mounting, Hermetic, Breech Coupling, Hermetic Solder Contacts, Series IV, Metric
    Dated: 08 September 2010
    File name: dtl38999ss45.pdf, File Size: 38 kb

  • MIL-DTL-38999/46B 
  • Connectors, Electrical, Circular, Plug, Breech Coupling, EMI Grounding, Removable Crimp Contacts, Series IV, Metric
    Dated: 30 July 2008
    File name: dtl38999ss46.pdf, File Size: 50 kb

  • MIL-DTL-38999/47B 
  • Connectors, Electrical, Circular, Plug, Breech Coupling, Removable Crimp Contacts, Series IV, Metric
    Dated: 14 August 2009
    File name: dtl38999ss47.pdf, File Size: 40 kb

  • MIL-DTL-38999/48B 
  • Connectors, Electrical, Circular, Receptacle, Weld Mounting, Hermetic, Breech Coupling, Hermetic Soler Contacts, Series IV, Metric
    Dated: 05 February 2014
    File name: dtl38999ss48.pdf, File Size: 38 kb

  • MIL-DTL-38999/49B 
  • Connectors, Electrical, Circular, Receptacle, in Line Cable, Breech Coupling, Removable Crimp Contacts, Series IV, Metric
    Dated: 05 February 2014
    File name: dtl38999ss49.pdf, File Size: 37 kb

  • MIL-DTL-38999/50C 
  • Connectors, Electrical, Circular, Receptacle, Dummy Stowage, Breech Coupling, Series IV, Metric
    Dated: 05 February 2014
    File name: dtl38999ss50.pdf, File Size: 41 kb

  • MIL-DTL-38999/51B 
  • Connector, Electrical, Circular, Cover, Protective, Plug, MIL-DTL-38999 Series IV
    Dated: 14 June 2013
    File name: dtl38999ss51.pdf, File Size: 72 kb

  • MIL-DTL-38999/52B 
  • Connector, Electrical Circular, Cover, Protective, Receptacle, MIL-DTL-38999 Series IV
    Dated: 04 October 2013
    File name: dtl38999ss52.pdf, File Size: 81 kb

  • MIL-DTL-38999/60 
  • Connectors, Electrical, Plug, Circular, Threaded, Straight, Removable Crimp Contacts, Fiber Optic Termini, Tight Tolerance, Series III, Shell Size 25, Metric
    Dated: 15 December 2004
    File name: dtl38999ss60.pdf, File Size: 115 kb

  • MIL-DTL-38999/61 
  • Connectors, Electrical, Circular, Receptacle, Threaded, Wall Mounting Flange, Removable Crimp Contacts, Fiber Optic Termini, Tight Tolerance, Series III, Shell Size 25, Metric
    Dated: 15 December 2004
    File name: dtl38999ss61.pdf, File Size: 133 kb

  • MIL-DTL-38999/62 
  • Sealing Boot, Size 8, Pin or Socket, Shielded Crimp Contacts, Electrical Connector, Circular, Metric
    Dated: 21 November 2014
    File name: dtl38999ss62.pdf, File Size: 50 kb

  • MS27342E w/Amendment 1 
  • Adapter, Electrical Connector, Series I and II
    Dated: 08 February 2008
    File name: ms27342.pdf, File Size: 87 kb

  • MS27466K 
  • Connector, Receptacle, Electrical, Wall Mounting Flange, Crimp Type, Bayonet Coupling, Series I
    Dated: 02 February 2012
    File name: ms27466.pdf, File Size: 78 kb

  • MS27467M 
  • Connector, Plug, Electrical, Straight, Crimp Type, Bayonet Coupling, Series I
    Dated: 02 February 2012
    File name: ms27467.pdf, File Size: 53 kb

  • MS27468K 
  • Connectors, Receptacle, Electrical, Jam Nut Mounting, Crimp Type, Bayonet Coupling, Series I
    Dated: 02 February 2012
    File name: ms27468.pdf, File Size: 119 kb

  • MS27469H 
  • Connector, Receptacle, Electrical, Wall Mounting Flange, Solder Type, Hermetic Seal, Series I
    Dated: 26 August 2011
    File name: ms27469.pdf, File Size: 103 kb

  • MS27470H 
  • Connector, Receptacle, Electrical, Jam Nut Mounting, Solder Type, Hermetic Seal, Series I
    Dated: 13 April 2012
    File name: ms27470.pdf, File Size: 71 kb

  • MS27471G 
  • Connector, Receptacle, Electrical, Solder Mounting, Solder Type, Hermetic Seal, Series I
    Dated: 13 April 2012
    File name: ms27471.pdf, File Size: 74 kb

  • MS27472J w/Amendment 1 
  • Connector, Receptacle, Electrical, Wall Mounting Flange, Crimp Type, Bayonet Coupling, Series II
    Dated: 15 November 2012
    File name: ms27472.pdf, File Size: 99 kb

  • MS27473N w/Amendment 1 
  • Connector, Plug, Electrical, Straight, Crimp Type, Bayonet Coupling, Series II
    Dated: 15 November 2012
    File name: ms27473.pdf, File Size: 68 kb

  • MS27474H w/Amendment 1 
  • Connector, Receptacle, Electrical, Jam Nut Mounting, Crimp Type, Bayonet Coupling, Series II
    Dated: 15 November 2012
    File name: ms27474.pdf, File Size: 162 kb

  • MS27475G 
  • Connector, Receptacle, Electrical, Wall Mounting Flange, Solder Type, Hermetic Seal, Series II
    Dated: 13 April 2012
    File name: ms27475.pdf, File Size: 130 kb

  • MS27476G 
  • Connector, Receptacle, Electrical, Box Mounting, Solder Type, Hermetic Seal, Series II
    Dated: 13 April 2012
    File name: ms27476.pdf, File Size: 113 kb

  • MS27477J 
  • Connector, Receptacle, Electrical, Jam Nut Mounting, Solder Type, Hermetic Seal, Series II
    Dated: 13 April 2012
    File name: ms27477.pdf, File Size: 172 kb

  • MS27478G 
  • Connector, Receptacle, Electrical, Solder Mounting, Solder Type, Hermetic Seal, Series II
    Dated: 13 April 2012
    File name: ms27478.pdf, File Size: 103 kb

  • MS27479G 
  • Connector, Receptacle, Electric, Wall Mounting Flange, Crimp Type, Bayonet Coupling, Series II
    Dated: 27 June 2012
    File name: ms27479.pdf, File Size: 170 kb

  • MS27480H 
  • Connector, Plug, Electric, Straight, Crimp Type, Bayonet Coupling, Series II
    Dated: 27 June 2012
    File name: ms27480.pdf, File Size: 158 kb

  • MS27481F Notice 2 
  • Connector, Receptacle, Electric, Jam Nut Mounting, Crimp Type, Bayonet Coupling, Series II (Cancellation Notice)
    Dated: 27 June 2012
    File name: ms27481not2.pdf, File Size: 19 kb

  • MS27484N w/Amendment 1 
  • Connector, Plug, Electrical, Straight, Crimp Type, Bayonet Coupling, EMI, Series II
    Dated: 15 November 2012
    File name: ms27484.pdf, File Size: 137 kb

  • MS27487F 
  • Connectors, Adapter, Electrical, Threaded, Kit, Straight and 90 Degrees, EMR Hardware, Series I and II
    Dated: 06 August 2012
    File name: ms27487.pdf, File Size: 47 kb

  • MS27489E Notice 2 
  • Connectors, Adapter, Electrical, Reducer, EMR Hardware, Series I and II (Cancellation Notice)
    Dated: 06 August 2012
    File name: ms27489.pdf, File Size: 16 kb

  • MS27496H 
  • Connectors, Receptacle, Electrical, Box Mounting, Crimp Type, Bayonet Coupling, Series I
    Dated: 02 February 2012
    File name: ms27496.pdf, File Size: 116 kb

  • MS27497P w/Amendment 1 
  • Connector, Receptacle, Electrical, Back Panel Wall Mounting Flange, Crimp Type, Bayonet Coupling, Series II
    Dated: 15 November 2012
    File name: ms27497.pdf, File Size: 112 kb

  • MS27499J 
  • Connector, Receptacle, Electrical, Box Mounting Flange, Crimp Type, Bayonet Coupling, Series II
    Dated: 24 November 2008
    File name: ms27499.pdf, File Size: 68 kb

  • MS27500H w/Amendment 1 
  • Connector, Plug, Electrical, 90 Deg. Elbow, Crimp Type, Bayonet Coupling, Series II
    Dated: 15 November 2012
    File name: ms27500.pdf, File Size: 88 kb

  • MS27501H 
  • Connectors, Electrical, Circular, Cover, Protective, Plug, Bayonet Coupling, Series I
    Dated: 15 June 2012
    File name: ms27501.pdf, File Size: 121 kb

  • MS27502J w/Amendment 1 
  • Cover, Electrical Connector, Protective, Receptacle, Bayonet Coupling, Series I
    Dated: 23 March 2011
    File name: ms27502.pdf, File Size: 54 kb

  • MS27503C(USAF) 
  • Connector, Receptacle, Electric, Solder Mounting, Solder Type, Hermetic Seal, Series II
    Dated: 04 May 1990
    File name: ms27503.pdf, File Size: 130 kb

  • MS27504D Notice 2 
  • Connector, Receptacle, Electric, Box Mounting Flange, Crimp Type, Bayonet Coupling, Series II (Cancellation Notice)
    Dated: 27 June 2012
    File name: ms27504not2.pdf, File Size: 16 kb

  • MS27505G w/Amendment 1 
  • Connector, Receptacle, Electrical, Back Panel, Box Mounting Flange, Crimp Type, Bayonet Coupling, Series I
    Dated: 08 February 2008
    File name: ms27505.pdf, File Size: 72 kb

  • MS27508H 
  • Connector, Receptacle, Electrical, Back Panel Box Mounting Flange, Crimp Type, Bayonet Coupling, Series II
    Dated: 24 November 2008
    File name: ms27508.pdf, File Size: 72 kb

  • MS27510H 
  • Connectors, Electrical, Circular, Cover, Protective, Plug, Bayonet Coupling, Series II
    Dated: 15 June 2012
    File name: ms27510.pdf, File Size: 195 kb

  • MS27511L 
  • Cover, Electrical Connector, Protective, Receptacle Bayonet Coupling, Series II
    Dated: 02 February 2010
    File name: ms27511.pdf, File Size: 107 kb

  • MS27512G 
  • Connectors, Electrical, Circular, Nut, Hexagon, Connector Mounting, Series II
    Dated: 12 July 2002
    File name: ms27512.pdf, File Size: 18 kb

  • MS27512G Notice 1 
  • Connectors, Electrical, Circular, Nut, Hexagon, Connector Mounting, Series II (Reactivation Notice)
    Dated: 10 June 2005
    File name: ms27512not1.pdf, File Size: 18 kb

  • MS27513F w/Amendment 1 
  • Connector, Receptacle, Electrical, Box Mounting Flange, Extended Grommet, Crimp Type Bayonet Coupling, Series II
    Dated: 15 November 2012
    File name: ms27513.pdf, File Size: 70 kb

  • MS27514E 
  • Nut, Slotted, Hexagon Connector Mounting, Series I
    Dated: 26 July 1990
    File name: ms27514.pdf, File Size: 84 kb

  • MS27515C w/Amendment 1 
  • Connector, Receptacle, Electric, Crimp Type, Back Panel Wall Mounting Flange, Series I
    Dated: 08 February 2008
    File name: ms27515.pdf, File Size: 121 kb

  • MS27652B w/Amendment 1 
  • Connector, Receptacle, Electric, Wall Mounting Flange, Crimp Type, Bayonet Coupling, Series I
    Dated: 08 February 2008
    File name: ms27652.pdf, File Size: 124 kb

  • MS27653B w/Amendment 1 
  • Connector, Plug, Electric, Straight, Crimp Type, Bayonet Coupling, Series I
    Dated: 08 February 2008
    File name: ms27653.pdf, File Size: 126 kb

  • MS27654D w/Amendment 1 
  • Connector, Receptacle, Electric, Back Panel Wall Mounting Flange, Crimp Type, Bayonet Coupling, Series I
    Dated: 08 February 2008
    File name: ms27654.pdf, File Size: 155 kb

  • MS27656E 
  • Connectors, Receptacle, Electrical, Back Panel Wall Mounting Flange, Crimp Type, Bayonet Coupling, Series I
    Dated: 02 February 2012
    File name: ms27656.pdf, File Size: 54 kb

  • MS27661F 
  • Connector, Plug, Electrical, Crimp Type, Lanyard Release, Fail-Safe, Series I
    Dated: 29 August 2011
    File name: ms27661.pdf, File Size: 59 kb

  • MS27662E w/Amendment 1 
  • Connector, Receptacle, Electrical, Thru-Bulkhead Mounting, Bayonet Coupling, Series I
    Dated: 08 February 2008
    File name: ms27662.pdf, File Size: 64 kb


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