GJB599 ⅠSeries

GJB599 Series I (MIL-DTL-38999 Series I) Circular Electrical Connector
This series of circular electrical connectors complies with the requirements of Series I in GJB599A (MIL-DTL-38999K) standard, adopting bayonet-type quick connection. It features small size, light weight, high contact density, EMI/RFI shielding, and anti-misalignment insertion design. The contacts are available in crimp and solder types, among which crimp contacts are crimped and detachable. The receptacles offer multiple mounting forms including box-mounted, wall-mounted, front-mounted, rear-mounted, and nut-secured mounting. This product exhibits high-intensity vibration resistance, is compatible with standard rear accessories per GJB1784A, and is suitable for special rear accessories for shielded cable clamping (Ti-Ni alloy memory ring). With 9 shell sizes, the mating interface and rear part are equipped with sealing structures, providing excellent three-proof performance (moisture, mold, salt spray) with a protection class up to IP65. It adopts a five-keyway guiding mechanism with five anti-misinsertion keyways, and is widely used in military systems such as aerospace and ordnance, as well as other electronic equipment systems.

JY27468 Nut-Mounted Receptacle

Only Type T

JY27466 Wall-Mounted Square Flange Front-Mounted Receptacle

Only Type T

GJB599 Series I (MIL-DTL-38999 Series I) Circular Electrical Connector

JY27466 Wall-Mounted Square Flange Front-Mounted Receptacle
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JY27656 Wall-Mounted Square Flange Rear-Mounted Receptacle

Only Type T

GJB599 Series I (MIL-DTL-38999 Series I) Circular Electrical Connector

JY27656 Wall-Mounted Square Flange Rear-Mounted Receptacle
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JY27496 Box-Mounted Square Flange Front-Mounted Receptacle

Only Available in Type E

GJB599 Series I (MIL-DTL-38999 Series I) Circular Electrical Connector

JY27496 Box-Mounted Square Flange Front-Mounted Receptacle
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JY27505 Box-Mounted Square Flange Rear-Mounted Receptacle

Only Available in Type E

GJB599 Series I (MIL-DTL-38999 Series I) Circular Electrical Connector

JY27505 Box-Mounted Square Flange Rear-Mounted Receptacle
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Product Designation Code

TK JY 27467 T 17 - F 35 PN
① ②   ③     ④ ⑤ ⑥ ⑦ ⑧

1—Enterprise Designation of Shenzhen Xuntonghang Electronic Technology Co., Ltd.
2—Main Designation of Circular Crimp Connector
3—Type:
27467-Plug (Only Type T); 27466-Wall-Mounted Square Flange Front-Mounted Receptacle (Only Type T);
27656-Wall-Mounted Square Flange Rear-Mounted Receptacle (Only Type T); 27496-Box-Mounted Square Flange Front-Mounted Receptacle (Only Type E);
27505-Box-Mounted Square Flange Rear-Mounted Receptacle (Only Type E); 27468-Nut-Mounted Receptacle (Only Type T); 3475-RFI-Shielded Plug; 3476-Plug; 3479-Hermetically Sealed Nut Rear Mounting Receptacle
4—Shell Category:
T-Rear with Threads, Rear Accessories Mountable;
E-Rear without Threads, Rear Accessories Non-Mountable
5—Shell Size: 09, 11, 13, 15, 17, 19, 21, 23, 25
6—Shell Plating: B-Cadmium Plated (Military Green); C-Anodized; E-Stainless Steel Passivated; F-Electroless Nickel Plated; . F₁-Sandblasted Nickel Plated (Subscript 1); S-Copper-Nickel Plated;
C₃-Zinc-Nickel Alloy Plated (Black Chromium, Subscript 3);
C₁-Oxidized (Military Green, Subscript 1);
C₂-Oxidized (Black, Subscript 2)
7—Contact Arrangement: See "Contact Arrangement Diagram" for details
8—P-Crimp Pin (500 Mating Cycles); PH-Soldered Pin; PC-Short PCB Pin; PL-Long PCB Pin;
H-Crimp Pin (1500 Mating Cycles); HH-Soldered Pin; HC-Short PCB Pin; HL-Long PCB Pin;
S-Crimp Socket (500 Mating Cycles); SH-Soldered Socket; SC-Short PCB Socket; SL-Long PCB Socket;
J-Crimp Socket (1500 Mating Cycles); JH-Soldered Socket; JC-Short PCB Socket; L-Long PCB Socket;
CD-External Pin/Internal Socket, Flange Outside Cabin (Feedthrough Receptacle);
DC-External Socket/Internal Pin, Flange Outside Cabin (Feedthrough Receptacle)
9—N-Standard Keyway (A, B, C, D); E-Alternate Keyway
Note: Except for the different main designations, the model naming of GJB599A (National Military Standard) and MIL-DTL-38999K (U.S. Military Standard) is identical. The main designation of GJB599A is "JY", and that of MIL-DTL-38999K is "MS"; the two are interchangeable and compatible.

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