D38999 Series III Connectors

Conesys MIL-DTL-38999 Series III

NYKCS is a value-add distributor (VAD) for Conesys, assembling D38999 Series III circular connectors to meet your specific requirements. These are high-performance cable to panel interconnects, suitable for military, aerospace and harsh environment applications.

The MIL-DTL-38999 Series III  range of military connectors (commonly known as D38999 III) features a number of body styles, contact termination options, body materials and platings to suit a wide variety of electronic, mechanical and environmentally demanding applications. Up to 128 contacts are available in a number of defined high density insert arrangements with a reliable tri start coupling.

Need pricing?

We are the most competitively priced supplier of approved MIL-DTL-38999 Series III connectors. NYKCS is fully approved to AS9100 Rev D and can assemble to meet your requirements. Contact us now for fast turnaround in 24 hours from receipt of order.

Try our interactive online part number tools or view our 'how to order' guide hereThis will not only help you construct a part number but will also describe the variants and performance levels available within the range. If you need further guidance or to place an order please contact the team today.

Click here for information about the correct Crimp Tool for D38999 Series III contacts.

Amphenol Conesys CannonITTindustries Deutsch Glenair Sealtron TE

Approval Documentation

Conesys Franchised Distributor CertificationDLA 38999 Documentation - VQP-18-031857

 

  • View complete AS9100 and AS9120 certification documents here
38999 series iii Value Add Assembly Part Mark Shells

In house assembly

In-house assembly enables NYKCS to supply a huge range of approved components quickly and efficiently meeting each customer’s specific requirement for MIL-DTL 38999 Series III.

Value Add Assembly Routing Paperwork

Approved to AS9100 Rev D

The assembly facility is fully approved to AS9100 Rev D providing end to end traceability and documentation that meets the needs of the most demanding supply chain.

Value Add Assembly Kitting From Stores

Flexible scheduling

The latest workflow management solutions enable NYKCS to support complex order books and short production runs of MIL-DTL-38999 alongside their extensive range of mil-spec interconnect products.

Product Features

  • Scoop-Proof, Triple Start, Self-Locking
  • Body Platings: Black Zinc Nickel, Olive Drab, Electroless Nickel
  • Coupling: Triple-start threaded coupling design, rapid advance, self-locking and full-mate indicator, keyed
  • EMI shielding to 65dB minimum at 10 GHz
  • Mating Speed: 360°, one full turn to full mate
MIL-DTL-38999 Series III Connector Part Number

D38999 Connector Part Number Breakdown

How to Order a MIL-DTL-38999 series III connector

  1. How and where will this connector be used? Select your Shell Style 
  2. What environment will this connector be used in ? Select your Service Class
  3. What is your electrical requirement? Define your Shell Size, this will be dictated by your circuit demands so therefore your Contact Arrangement
  4. Which half of your circuit is active? This will define your Contact Style, i.e. whether your connector should have Pins or Sockets.

Do you need to prevent mis-mating with similar neighbour connectors? Define if your connector needs a Polarising Position or insert N for none.

The tables below will assist you to construct an official MIL spec part number for a MIL-DTL-38999 series III connector. Many of the connector OEM’s have their own proprietary part numbers which we can cross reference to from the Mil part numbers. NYK Component Solutions assembles in-house for Conesys and is also distributor for other leading OEM’s. We are in a unique position to provide unbiased advice for you to meet your technical and logistical requirements.

Part Number Breakdown Tables

D38999 / 20 F A 35 P N

D38999 /20 F A 35 P N
Connector Type Shell Style Service Class Shell Size Contact Arrangement Contact Style Polarizing Position

Ordering Information

Connector Type D38999 - MIL-DTL-38999 Series III
Shell Style see table  SHELL STYLE
Service Class see table SERVICE CLASS
Shell Size see table INSERT CONFIGURATIONS BY SHELL SIZE
Contact Arrangement see table INSERT CONFIGURATIONS BY SHELL SIZE
Contact Style (for contact ratings see table CONTACT RATINGS) P - Pin contact
S - Socket contact
A - Less Pin contacts
B - Less Socket contacts
Polarizing Position N (Normal), for other options see table POLARIZATION

Shell Style

Prefix Shell Style Description Available In Class
D38999/20 wall mount receptacle F,G,J,K,M,S,W
D38999/21 hermetic seal box mount receptacle H,N,Y
D38999/23 hermetic seal jam nut receptacle H,N,Y
D38999/24 jam nut receptacle F,G,J,K,M,S,W
D38999/25 hermetic seal solder mount receptacle H,N,Y
D38999/26 straight plus, self-locking F,G,J,K,M,S,W
D38999/27 hermetic seal weld mount receptacle H,N,Y
38999 series iii service class table
38999 series iii insert configuration table low
38999 series iii insert configuration table
38999 series iii contact rating table
38999 series iii polarization table

Polarization Notes: Numbers in table are angle of rotation in degrees.

  • from main key looking clockwise onto front face of plug
  • from main keyway looking anticlockwise onto front face of receptacle

Keyway identification ‘N’ is normal.

Insert arrangements do not rotate with the main keyway.

Crimp Tool Reference Table

Contact Type Size of Contacts Contacts Filler Plugs Plastic Tool Insertion/Removal Metal Tool Insertion Metal Tool Removal Crimp Tool Positioner- Turret Head Second Crimp Tool
Pin 22D M39029/58-360 MS27488-22-1 M81969/14-01 M81969/8-01 REV B M81969/8-02 REV B M22520/2-01 M22520/7-07
Socket 22D M39029/56-348 MS27488-22-1 M81969/14-01 M81969/8-01 REV B M81969/8-02 REV B M22520/2-01 M22520/7-05
Pin 20 M39029/58-363 MS27488-20-1 M81969/14-10 M81969/8-05 M81969/8-06 M22520/1-01 M22520/7-08
Socket 20 M39029/56-351 MS27488-20-1 M81969/14-10 M81969/8-05 M81969/8-06 M22520/1-01 M22520/7-08
Pin 16 M39029/58-364 MS27488-16-1 M81969/14-03 M81969/8-07 M81969/8-08 M22520/1-01 M22520/7-04
Socket 16 M39029/56-352 MS27488-16-1 M81969/14-03 M81969/8-07 M81969/8-08 M22520/1-01 M22520/7-04
Pin 12 M39029/58-365 MS27488-12-1 M81969/14-04 M81969/8-09 M81969/8-10 M22520/1-01 M22520/1-04
Socket 12 M39029/56-353 MS27488-12-1 M81969/14-04 M81969/8-09 M81969/8-10 M22520/1-01 M22520/1-04
Pin 8 Twinax M39029/90-529 MS27488-8-1 M81969/14-12 M81969/46-06 M81969/14-12 M22520/2-01 M22520/2-37 M22520/5-01
Socket 8 Twinax M39029/91-530 MS27488-8-1 M81969/14-12 M81969/46-06 M81969/14-12 M22520/2-01 M22520/2-37 M22520/5-01

 

EMI/RFI Environmental Backshells

Need accessories? These circular connectors can be ordered with a very broad range of compatible accessories to suit different cable and installation requirements. Some of these can be found on the Accessories Page. Your NYK Component Solutions specialist can advise you further.