J599WR square-flange receptacle and plug with black nickel-PTFE finish — Square-flange receptacle and plug, nickel-PTFE finish (representative image)

J599WR Marine-Grade 38999 Circular Connectors, Cadmium-Free

Cadmium-free nickel-PTFE finish · marine-grade · up to 5000 mating cycles

J599WR is our marine-grade version of the 38999 Series III-type connector. Its nickel-PTFE (T) finish replaces cadmium, resists scratching with 2.3 times the wear resistance of cadmium plating, and passes acid salt spray and acid atmosphere tests. It mates with and mounts in place of J599 Series III connectors. Earlier catalogs list the high-life version as J599HL.

Coupling: Triple-start thread
Shell sizes: 9 to 25
Insert arrangements: 105
Contact sizes: 22D to 10 (5–33 A)
Mating cycles: 500, 1500 or 5000
Acid salt spray: 240 h
Temperature: −65 to +175 °C

Key features

Cadmium-free nickel-PTFE (T) finish with 2.3 times the wear resistance of cadmium plating
Marine-grade: neutral salt spray 500 h, acid salt spray 240 h, acid atmosphere 28 days
Electrical, mating and mounting interfaces replace GJB 599B Series III (J599 Series III) connectors directly
500- or 5000-cycle versions for frequent mating
Reinforced interfacial seal keeps moisture away from the contacts
Triple-start threaded coupling with anti-decoupling, scoop-proof and keyed; master-key mark for installation
Removable crimp and solder contacts; matching J1784WR backshells and protective caps

Specifications

Electrical
Parameter	Value	Condition
Dielectric withstanding voltage, service rating M	1300 Vrms / 800 Vrms	Sea level / 21,000 m altitude, mated
Dielectric withstanding voltage, service rating N	1000 Vrms / 600 Vrms	Sea level / 21,000 m altitude, mated
Dielectric withstanding voltage, service rating I	1800 Vrms / 1000 Vrms	Sea level / 21,000 m altitude, mated
Dielectric withstanding voltage, service rating II	2300 Vrms / 1000 Vrms	Sea level / 21,000 m altitude, mated
Insulation resistance	≥ 5000 MΩ	500 VDC
Shell-to-shell conductivity	2.5 mΩ
EMI shielding	50 dB at 10 GHz

Mechanical
Parameter	Value	Condition
Coupling	Triple-start thread, self-locking
Durability	500, 1500 or 5000 mating cycles	G version 500, H/J contacts 1500, H version 5000
Shock	2940 m/s² peak, half-sine, 3 ± 1 ms

Environmental
Parameter	Value	Condition
Operating temperature	−65 to +175 °C
Sine vibration	10–2000 Hz, 60 g (140–2000 Hz), 3 × 12 h	With temperature cycling
Random vibration	50–2000 Hz, 1 g²/Hz (100–2000 Hz), 41.7 g rms, 2 × 8 h	At maximum temperature
Random vibration	25–2000 Hz, 5 g²/Hz (100–300 Hz), 49.5 g rms, 2 × 8 h	At ambient temperature
Damp heat, cyclic	Up to 98 % RH, 10 cycles of 24 h
Neutral salt spray	500 h
Acid salt spray	240 h	pH 3.5 ± 0.5
Acid atmosphere	28 days	pH 3.5 ± 0.5
Mould resistance	Grade 1, 84 days	GJB 150.10A-2009, fungus group 2 plus Scopulariopsis brevicaulis

GJB 599B-2012 — Chinese specification for Series III threaded circular connectors, the counterpart of MIL-DTL-38999 Series III. J599WR meets GJB 599B-2012 and adds marine environmental tests.

Values not listed above — for example vibration level, leak rate or other environmental tests — can be tested to your requirements, including third-party testing. Specifications are subject to change; contact us for the current datasheet.

Versions

Series code	Version	Notes
J599WR/26	Plug
J599WR/20	Square-flange receptacle	Panel up to 2.5 mm (rear mount) or 3.2 mm (front mount); no backshell with front mounting
J599WR/24	Jam-nut receptacle	Panel up to 3.2 mm
J599WR/98	Round-flange adapter receptacle
J599WR/32, /33	Protective caps for plug / receptacle	Stainless-steel cable, steel wire rope or nylon cord lanyard
J1784WR/14	Backshell, straight, non-shielded	Anti-rotation, no cable clamp
J1784WR/38, /38S, /39, /39S	Backshells with cable clamp, straight or 90°	S versions add anti-loosening
J1784WR/88, /90, /20G1–G4	Shielded backshells, straight or 90°	Optional Ti-Ni shape-memory band for 360° shield termination
J1784WR/69, /20	Shielded backshells, heat-shrink boot or band clamp
J1784WR/18, /79, HE, HK	Shielded backshells with cable clamp, straight or 90°

Shell materials and finishes

Code	Shell material	Finish	Shell conductivity	EMI shielding	Temperature	Salt spray
T	Aluminum alloy	Nickel-PTFE (cadmium-free)	2.5 mΩ	50 dB at 10 GHz	−65 to +175 °C	500 h neutral; 240 h acid

Contact sizes and current ratings

Contact size	Engaging diameter	Contact resistance	Current rating	Contact retention	Wire size
22D	0.775 mm	≤ 14.6 mΩ	5 A	44 N	—
20	1.02 mm	≤ 7.3 mΩ	7.5 A	67 N	—
16	1.59 mm	≤ 3.7 mΩ	13 A	111 N	—
12	2.39 mm	≤ 1.83 mΩ	23 A	111 N	—
10	3.18 mm	≤ 1 mΩ	33 A	111 N	—

How to order

J599WR [life] / [type] T [shell] [arrangement] [contact] [key] [options] [-lockwire]

Example: J599WRH/26TE35SN — Plug, 5000 mating cycles, nickel-PTFE finish, shell E (size 17), arrangement 17-35, socket contacts, key position N

Code segment	Options
Life	`G` 500 mating cycles `H` 5000 mating cycles
Type	`26` Plug `20` Square-flange receptacle `24` Jam-nut receptacle `98` Round-flange adapter receptacle
Finish	`T` Aluminum alloy, nickel-PTFE
Shell	`A B C D E F G H J` Shell size 9, 11, 13, 15, 17, 19, 21, 23, 25
Arrangement	`e.g. 35` See the insert arrangement table below
Contact	`P / S` Pin / socket
Key	`N` Normal key position `A B C D E` Alternate key positions
Options	`H` Solder contacts `C1` Fluorosilicone (oil-resistant) seals
Lockwire	`-S` Lockwire provision; square-flange receptacles supplied with M3 × 12.5 screws `-S10, -S14` Square-flange receptacle with M3 × 10 or M3 × 14 screws `-SC, -S10C` Countersunk M3 × 12.5 or M3 × 10 screws for countersunk panels

More examples: J599WRG/20TE35PN — square-flange receptacle, 500 cycles, shell 17, arrangement 17-35, pin contacts. J599WRH/26TE35SNC1 — as the plug example above, with fluorosilicone seals.

Earlier catalogs use J599HL/… for the 5000-cycle version (for example J599HL/26TE35SN = J599WRH/26TE35SN) and J599/…T with H (pin) or J (socket) contacts for the 1500-cycle version (for example J599/20TE35HN). We quote under either designation.

Insert arrangements

105 standard layouts, viewed from the mating face of the pin insert. The arrangement number is written as shell size – layout (for example 25-35). The service rating sets the withstanding voltage (see specifications).

Shell sizeMinimum contactsContact size

105 layouts

Arrangement	Contacts	Contact sizes	Service rating
9-03	3	3 × size 20	I
9-35	6	6 × size 22D	M
9-44	4	4 × size 22	M
9-98	3	3 × size 20	I
11-02	2	2 × size 16	I
11-04	4	4 × size 20	I
11-05	5	5 × size 20	I
11-08a	8	4 × size 20, 4 × size 22D	M
11-35	13	13 × size 22D	M
11-98	6	6 × size 20	I
11-99	7	7 × size 20	I
13-03	3	3 × size 16	II
13-04	4	4 × size 16	I
13-06	6	2 × size 12, 4 × size 20	M
13-06A	6	2 × size 16, 4 × size 20	M
13-08	8	8 × size 20	I
13-08A	8	4 × size 16, 4 × size 20	M
13-12A	12	12 × size 20	N
13-16	16	3 × size 16, 13 × size 22D	N
13-35	22	22 × size 22D	M
13-98	10	10 × size 20	I
15-03	3	3 × size 12	M
15-04A	4	4 × size 12	M
15-05	5	5 × size 16	II
15-06A	6	6 × size 16	M
15-13	13	4 × size 16, 2 × size 20, 7 × size 22D	M
15-14	14	6 × size 16, 8 × size 22D	N
15-15	15	1 × size 16, 14 × size 20	I
15-18	18	18 × size 20	I
15-19	19	19 × size 20	I
15-23	23	3 × size 16, 2 × size 20, 18 × size 22D	M
15-32	32	9 × size 20, 23 × size 22D	M
15-35	37	37 × size 22D	M
15-97	12	4 × size 16, 8 × size 20	I
17-06	6	6 × size 12	I
17-06C	6	4 × size 12, 2 × size 22	I
17-08	8	8 × size 16	II
17-14	14	2 × size 12, 4 × size 16, 8 × size 20	M
17-19	19	4 × size 16, 11 × size 20, 4 × size 22D	M
17-20	20	4 × size 12, 16 × size 22D	M
17-26	26	26 × size 20	I
17-28A	28	3 × size 12, 25 × size 22D	M
17-30	6	3 × size 10, 3 × size 20	N
17-35	55	55 × size 22D	M
17-42	42	42 × size 22	M
17-99	23	2 × size 16, 21 × size 20	I
19-11	11	11 × size 16	II
19-13	13	8 × size 12, 5 × size 20	I
19-17	17	2 × size 12, 15 × size 20	M
19-20	20	8 × size 16, 4 × size 20, 8 × size 22D	M
19-22	22	7 × size 12, 15 × size 22D	M
19-28	28	2 × size 16, 26 × size 20	I
19-30	30	1 × size 16, 29 × size 20	I
19-32	32	32 × size 20	I
19-35	66	66 × size 22D	M
19-45	67	67 × size 22D	M
19-53	53	53 × size 22	M
19-96	9	9 × size 12	I
21-11	11	11 × size 12	I
21-13	13	2 × size 10, 7 × size 12, 4 × size 20	M
21-16	16	16 × size 16	II
21-24	24	24 × size 20	I
21-25	25	25 × size 20	I
21-27	27	27 × size 20	I
21-28	28	3 × size 10, 25 × size 22D	I
21-35	79	79 × size 22D	M
21-39	39	2 × size 16, 37 × size 20	I
21-41	41	41 × size 20	I
21-61	61	6 × size 16, 55 × size 22D	M
21-75A	4	4 × size 12	I
23-02	85	85 × size 22	M
23-06H	6	6 × size 10	II
23-14	14	14 × size 12	I
23-21	21	21 × size 16	II
23-26	26	8 × size 12, 18 × size 20	M
23-32	32	32 × size 20	I
23-34	34	34 × size 20	I
23-34A	34	4 × size 12, 16 × size 16, 14 × size 22D	M
23-35	100	100 × size 22D	M
23-36	36	36 × size 20	I
23-44a	44	2 × size 10, 4 × size 12, 38 × size 22D	M
23-53	53	53 × size 20	I
23-55	55	55 × size 20	I
23-70	70	10 × size 20, 60 × size 22D	M
23-86	86	16 × size 20, 70 × size 22D	M
23-97	16	16 × size 16	I
23-99	11	11 × size 16	II
25-02	100	100 × size 22	M
25-04	56	8 × size 16, 48 × size 20	I
25-10	10	6 × size 10, 4 × size 12	N
25-11	11	9 × size 10, 2 × size 20	N
25-19	19	19 × size 12	I
25-24	24	12 × size 12, 12 × size 16	I
25-29	29	29 × size 16	I
25-32	32	6 × size 10, 10 × size 16, 16 × size 20	M
25-35	128	128 × size 22D	M
25-39	39	2 × size 12, 17 × size 16, 20 × size 20	M
25-43	43	20 × size 16, 23 × size 20	I
25-45	45	8 × size 12, 37 × size 20	M
25-61	61	61 × size 20	I
25-64a	64	8 × size 16, 40 × size 20, 16 × size 22D	M
25-69	69	10 × size 16, 15 × size 20, 44 × size 22D	M
25-92	92	4 × size 20, 88 × size 22D	M
25-93	118	8 × size 16, 110 × size 22D	M
25-118G	118	8 × size 16, 110 × size 22D	N

Typical applications

Marine and offshore equipment
Wind turbines and outdoor energy systems
Rail rolling stock and wayside equipment
Industrial robots and test interfaces with frequent mating
Portable field instruments

Frequently asked questions

Can J599WR replace my existing J599 Series III or 38999 Series III connectors?

Yes for J599 Series III: J599WR has the same electrical, mating and mounting interfaces as GJB 599B Series III connectors and replaces them directly. For D38999 parts, send us the part number and we will propose the matching configuration and samples for your mating test.

Why choose the nickel-PTFE finish instead of cadmium?

It is cadmium-free, resists scratching with 2.3 times the wear resistance of cadmium plating, and passes 240 h acid salt spray and 28 days acid atmosphere.

Which version should I use for frequent mating?

Choose the H version (5000 mating cycles), for example J599WRH/26TE35SN.

Is J599HL the same as J599WR?

Yes. J599HL is the earlier name of the high-life J599WR version: same company standard, nickel-PTFE (T) finish, types, shells and ratings. J599HL/26TE35SN corresponds to J599WRH/26TE35SN. A 1500-cycle version with H/J contacts is also available.

Do you supply matching backshells?

Yes. J1784WR backshells in the same nickel-PTFE finish come in straight and 90° versions, with or without cable clamp and shield termination.

Selection guides

From sample to production

Send your requirement
Part number, drawing, pin-out or a short description of your application.
Configuration and quote
Our engineers match the configuration and reply with a drawing and quotation.
Samples
Samples are made to your order. Third-party testing to your specification is available on request.
Your approval
You test the samples in your own equipment and approve them.
Series production
Production follows the approved sample configuration.

Need a quote or a drawing?

Send your part number, pin-out or drawing. An engineer will reply by email.

Request a quote

J599WR Marine-Grade 38999 Circular Connectors, Cadmium-Free

Key features

Specifications

Versions

Shell materials and finishes

Contact sizes and current ratings

How to order

Insert arrangements

Typical applications

Frequently asked questions

Selection guides

From sample to production

Send your requirement

Configuration and quote

Samples

Your approval

Series production

Need a quote or a drawing?

Related series

J1784 Backshells for 38999-Type Connectors

J599 Series III Circular Connectors (38999 Series III Type)

Protective Caps for 38999-Type Plugs and Receptacles