GJB599 ⅡSeries

GJB599 Series II (MIL-DTL-38999 Series II) Circular Electrical Connector
This series of circular electrical connectors complies with the requirements of Series II 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.

JY27473-JY27484 JY27473-JY27484 Plugs

Only Type T

JY27472-JY27497 JY27472-JY27497 Wall-Mounted Square Flange Receptacles

Only Type T

JY27513-JY27508 " JY27508-JY27513 Box-Mounted Square Flange Receptacles "

Only Type E

JY27474 JY27474 Nut-Mounted Receptacle

Available in Type T and Type E (Threadless, Customized per Customer Request)

GJB599 ⅡSeries

JY27474 Nut-Mounted Receptacle
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Product Designation Code

XTH JY 27472 T 14 F   35 P N
    ① ②     ③   ④ ⑤ ⑥ ⑦ ⑧ ⑨

1—Enterprise Designation of Shenzhen Xuntonghang Electronic Technology Co., Ltd.
2—Main Designation of Circular Crimp Connector
3—Type:
27473-Plug (Only Type T); 27484-Shielded Plug (Only Type T); 27472-Wall-Mounted Square Flange Front-Mounted Receptacle (Only Type T);
27513-Box-Mounted Square Flange Front-Mounted Receptacle (Only Type E); 27497-Wall-Mounted Square Flange Rear-Mounted Receptacle (Only Type T); . 27508-Box-Mounted Square Flange Rear-Mounted Receptacle (Only Type E);
27474-Nut-Mounted Receptacle (Available in Type T; Type E is Threadless, Customized per Customer Request)

4—Category:
T-Rear with Threads and Rear Accessory Detent Teeth, Rear Accessories Mountable;
E-Rear without Threads and Rear Accessory Detent Teeth, Rear Accessories Non-Mountable
5— Shell Size: 08, 10, 12, 14, 16, 18, 20, 22, 24
6— B-Aluminum Alloy Shell (Cadmium Plated, Military Green); F₁-Sandblasted Nickel Plated (Subscript 1);
C-Aluminum Alloy Shell (Anodized); C₃-Zinc-Nickel Alloy Plated (Black Chromium, Subscript 3);
F-Aluminum Alloy Shell (Electroless Nickel Plated); C₁-Oxidized (Military Green, Subscript 1);
E-Stainless Steel Shell (Passivated); C₂-Oxidized (Black, Subscript 2)

7— 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—Keying: 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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