MIL-DTL-38999 Series III circular fire-proof electrical connectors class K and S series Connector

Total > CONNECTORS > D-SUB (Rectangle) > JQ15 Rectangular Electrical Connector series > MIL-DTL-38999 series > MIL-DTL-38999 Series III circular fire-proof electrical connectors class K and S series

— High density miniature circular electrical connector, including from one contact to 128 contacts

Product solid picture
Brief introduction
specification
how to order
Product Outline Dimensions
Contact Arrangements
Main key/Keyway
Terminal Accessories

Product solid picture

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Brief introduction

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— High density miniature circular electrical connector, including from one contact to 128 contacts

— contact codes including #22D、#20、#16、#12、#16coaxial and #8 tri-coaxial;

Threaded coupling, releasing-proof
—scoop-proof, 100% lighter than aluminum shell
— Shock-proof and vibration-proof
— Fire-proof：The lowest temperature 1093℃

IIIApply widely in aviation, space and military systems, especially in fire-proof environment.

Meet the US military standard: MIL-DTL-38999series III

specification

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Mechanical characteristics

— Shell: Aluminum alloy
Finishing：Nickel（S） passivation（K）

— Insert interface：plastic

— Gasket：Silicon rubber elastomer— contact：copper alloy

Finishing ：Nickel plate followed by—gold plate

— Life ：500 cycles

— shock： 2940m/s² 3ms

—shock：
Sine： 254 m/s² 10～50Hz; 588 m/s²

140～2000Hz

Random： 96(m/s² )²/ Hz，408 m/s²,

100～1000Hz at high temperature

Random： 480(m/s²)²/ Hz,100～300Hz at ambient

— Contact retention force(min)： #22D:45N #16:111N #8:111N

electrical characteristics

— (Vrms)：

Ratings	Sea level	21000m
M N Ⅰ Ⅱ	1300 1000 1800 2300	800 600 1000 1000

contact resistance：

#22D:14.6mΩ #20:7.3mΩ

#16:3.8mΩ #12:1.7mΩ

— insulate resistance：≥5000MΩ(500V DC)

— contact current ratings：

#22D:5A #20:7.5A

#16:13A #12:23A

— Shielding：

S（Nickel）：1 mV K（passivation）：10 mV

— Shielding：

100MHz 90dB(S) 80 dB(K)

1GHz 85dB(S) 65 dB(K)

10GHz 65dB(S) 45 dB(K)

— #8tri-coaxial contacts：

Frequency width：0～20 MHz

Voltage ratings：500V AC max

125V AC At 21000m level voltage dropped

Inner and middle contact ：≤55mV at 1A

External contact：≤75mV at 12A

environmental characteristics

—— Temperature ranges：

Nickel(S)：-65℃～+200℃

Passivation(K)：-65℃～+200℃

— Low altitude：

-65℃min，1.06kPa min

salt spray：48h

— Temperature shock: For 24h hours ,10cycles

lowest temperature:1093℃ 20min

how to order

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D38999/ 20 J B 35 H N

(1) (2) (3) (4) (5) (6) (7)

(1)：D38999—Series Prefix

(2)：shell style: 20-wall mounting receptacle

26- plug

(3)：finish K-stainless steel passivation

S- stainless stell electroless nickel coating

(4)：Shell size :09-11-13-15-17-19-21-23-25

A- B- C- D –E – F -G- H- J

(5)：insert arrangement : Please see the figure of insert arrangement

(6)：Contact type :P-Pin

S-Socket

(7)：main key/keyway polarization: N- normal key；A,B,C,D,E

Product Outline Dimensions

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▼ D38999/20 wall mounting receptacle

MIL-DTL-38999 Series III circular fire-proof electrical connectors class K and S series Connectors Product Outline Dimensions

Shell NO.	Shell code	A	Cmax	D Thread	E	F	G	H	J	d1min	d2min
09	A	19.50	3.65	M12×1-6g	23.80	18.26	15.09	3.25	5.49	16.66	13.11
11	B	19.50	3.65	M15×1-6g	26.20	20.62	18.26	3.25	4.93	20.22	15.88
13	C	19.50	3.65	M18×1-6g	28.60	23.01	20.62	3.25	4.93	23.42	19.05
15	D	19.50	3.65	M22×1-6g	31.00	24.61	23.01	3.25	4.39	26.59	23.01
17	E	19.50	3.65	M25×1-6g	33.30	26.97	24.61	3.25	4.93	30.96	25.81
19	F	19.50	3.65	M28×1-6g	36.50	29.36	26.97	3.25	4.93	32.94	28.98
21	G	18.70	4.35	M31×1-6g	39.70	31.75	29.36	3.25	4.93	36.12	32.16
23	H	18.70	4.35	M34×1-6g	42.90	34.93	31.75	3.91	6.15	39.29	34.93
25	J	18.70	4.35	M37×1-6g	46.00	38.10	34.93	3.91	6.15	42.47	37.69

▼ D38999/26 plug

Shell NO.	Shell code	A	B Thread	C	d	p
09	A	20.60	M12×1 - 6g	21.80	17.78	17.02
11	B	23.60	M15×1 - 6g	25.00	20.96	19.59
13	C	28.20	M18×1 - 6g	29.40	25.65	24.26
15	D	31.30	M22×1 - 6g	32.50	28.83	27.56
17	E	34.50	M25×1 - 6g	35.70	32.01	30.73
19	F	37.30	M28×1 - 6g	38.50	35.18	33.91
21	G	40.50	M31×1 - 6g	41.70	38.35	37.08
23	H	43.70	M34×1 - 6g	44.90	41.53	40.26
25	J	46.80	M37×1 - 6g	48.00	44.70	43.43

Receptacle interface view

Plug interface view

MIL-DTL-38999 Series III circular fire-proof electrical connectors class K and S series Connectors Main key/Keyway

Note: When order for key A、B、C、D、E.Please contact to our company

Shell NO.	Shell code	Degree	N	A	B	C	D	E
09	A	A⁰ B⁰ C⁰ D⁰	105 140 215 265	102 132 248 320	80 118 230 312	35 140 205 275	64 155 234 304	91 131 197 240
11	B	A⁰ B⁰ C⁰ D⁰	95 14 208 236	113 156 182 292	90 145 195 252	53 156 220 255	119 146 176 298	51 141 184 242
13	C	A⁰ B⁰ C⁰ D⁰	95 141 208 236	113 156 182 292	90 145 195 252	53 156 220 255	119 146 176 298	51 141 184 242
15	D	A⁰ B⁰ C⁰ D⁰	95 141 208 236	113 156 182 292	90 145 195 252	53 156 220 255	119 146 176 298	51 141 184 242
17	E	A⁰ B⁰ C⁰ D⁰	80 142 196 293	135 170 200 310	49 169 200 244	66 140 200 257	62 145 180 280	79 153 197 272
19	F	A⁰ B⁰ C⁰ D⁰	80 142 196 293	135 170 200 310	49 169 200 244	66 140 200 257	62 145 180 280	79 153 197 272
21	G	A⁰ B⁰ C⁰ D⁰	80 142 196 293	135 170 200 310	49 169 200 244	66 140 200 257	62 145 180 280	79 153 197 272
23	H	A⁰ B⁰ C⁰ D⁰	80 142 196 293	135 170 200 310	49 169 200 244	66 140 200 257	62 145 180 280	79 153 197 272
25	J	A⁰ B⁰ C⁰ D⁰	80 142 196 293	135 170 200 310	49 169 200 244	49 169 200 257	62 145 180 280	79 153 197 272

Terminal Accessories

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Meet the US military standard:MIL-DTL-85049.
Order separately for accessories. Besides; we can supply the other special accessories according to the customer’s requirement.
M85049/15-S-11W
M85049/69-11AD
M85049/18-9W02A
M85049/21-9A02A
M85049/38-11W
M85049/39-11A
M85049/15-S-11W
How to order
     M85049/ 15    -S   11   W
           (1)      (2)   (3)   (4) (5)
(1)：M85049—Series Prefix
(2)：Rear shell type: 15—45°angle quick connect
(3)：Rear shell jam nut S-self-locking jam nut
                                       G-self-locking and grounding
(4)：shell size 09,11,13,15,17,19,21,23,25
(5)：Finishing: W-Olive-drab cadmium plate
                        N-Nickel
MIL-DTL-38999 Series III circular fire-proof electrical connectors class K and S series Connectors Terminal Accessories
Shell NO.
Bmax
Cmax
Dmax
cable entry max
09
36.3
21.79
22.4
6.71
11
36.3
24.99
22.4
9.96
13
36.3
29.39
23.9
12.85
15
49.0
32.49
31.8
16.03
17
49.0
35.71
33.3
19.20
19
51.6
38.51
35.1
21.46
21
53.1
41.71
38.1
24.64
23
53.1
44.91
42.9
27.81
25
56.9
47.98
44.5
30.99
M85049/69-11AD
M85049/ 69   -11   A   D
     (1)      (2)   (3)   (4) (5)
(1)：M85049—Series Prefix
(2)：Rear shell type: 69—shrinking pipe adapter
(3)：shell size 09,11,13,15,17,19,21,23,25
(4)：Finishing: W-Olive-drab cadmium plate
                        N-Nickel
                        A-Anode,black color
(5)：Vent type Mull-with vent
                         D-with vent
MIL-DTL-38999 Series III circular fire-proof electrical connectors class K and S series Connectors Terminal Accessories
Shell Code
ФA
max
ФB
max
ФC
max
09
19.05
6.35
13.54
11
21.59
9.35
15.37
13
25.40
12.70
19.66
15
29.21
15.88
21.29
17
31.75
19.05
24.46
19
35.56
20.62
26.47
21
39.37
23.80
30.91
23
41.91
26.97
34.42
25
46.99
30.18
36.65
M85049/18-9W02A
M85049/ 18   -9   W   02 A
       (1)    (2)   (3)  (4)  (5) (6)
(1)：M85049—Series Prefix
(2)：Rear shell type: 18—rear shield connect cable airproof clipper
(3)：shell size 09,11,13,15,17,19,21,23,25
(4)：Finishing: W-Olive-drab cadmium plate
                        N-Nickel
(5)：cable clipper code 01,02,03,04,05,06,07,08,09
(6)：blank (without special mark),A,B,C
Shell code
Cable clipper code
A
max
Min
max
09
01
02
19.1
11
01
03
21.6
13
02
04
25.4
15
02
05
29.2
17
02
06
31.8
19
03
07
35.6
21
03
08
39.4
23
03
09
41.9
25
04
10
47.0
MIL-DTL-38999 Series III circular fire-proof electrical connectors class K and S series Connectors Terminal Accessories

Shell
length code
L
9～25
Normal( Blank）
38.1
9～25
A
63.5
15～25
B
88.9
21～25
C
114.3
Cable clipper code
Mated cable diameter
Y
max
X
max
min
max
01
1.57
3.18
20.3
31.75
02
3.18
6.35
25.4
03
6.35
9.53
27.9
04
9.53
12.70
30.5
05
12.70
15.88
31.8
34.29
06
15.88
19.05
35.6
34.93
07
19.05
22.23
38.1
38.10
08
22.23
25.40
41.9
41.28
09
25.40
28.58
44.5
10
28.58
31.75
48.3
M85049/21-9A02A
M85049/ 21   -9   A   02 A
   (1)       (2)    ③   ④ ⑤ ⑥
(1)：M85049—Series Prefix
(2)：Rear shell type: 21—straight cable clipper
(3)：shell size 09,11,13,15,17,19,21,23,25
(4)：Finishing: W-Olive-drab cadmium plate
                        N-Nickel
                        A-Anode,blank color
(5)：cable clipper code 01,02,03,04,05,06,07,08,09
(6)：blank (without special mark),A,B,C
Shell code
Cable clipper code
A
max
min
max
09
01
02
19.1
11
01
03
21.6
13
02
04
25.4
15
02
05
27.9
17
02
06
31.8
19
03
07
35.6
21
03
08
38.1
23
03
09
41.9
25
04
10
44.5
MIL-DTL-38999 Series III circular fire-proof electrical connectors class K and S series Connectors Terminal Accessories
Cable clipper code
Mated cable diameter
Y
max
min
max
01
1.57
3.18
20.3
02
3.18
6.35
25.4
03
6.35
9.53
27.9
04
7.92
12.70
30.5
05
11.10
15.88
31.8
06
14.27
19.05
35.6
07
17.45
22.23
38.1
08
20.62
25.40
41.9
09
23.80
28.58
44.5
10
26.97
31.75
48.3

Shell code
length code
L
9～25
Normal（Blank）
38.1
9～25
A
63.5
15～25
B
88.9
21～25
C
114.3
M85049/38-11W
M85049/ 38    -   11   W
       (1)    (2)   (3)  (4)  (5)
(1)：M85049—Series Prefix
(2)：Rear shell type: 38—straight cable clipper
(3)：Rear shell jam nut blank-Non-locking jam nut
                                      S-self-locking jam nut
(4)：shell size 09,11,13,15,17,19,21,23,25
(5)：Finishing: W-Olive-drab cadmium plate
                       N-Nickel
                        A-Anode,black color
                       S-corrosion resistant steel,passivated
MIL-DTL-38999 Series III circular fire-proof electrical connectors class K and S series Connectors Terminal Accessories

Shell code
Amax
Cmax
Dmax
Fmax
Mated cable diameter E
min
max
09
23.1
27.9
21.6
21.79
2.49
5.94
11
23.1
27.9
22.9
24.99
3.89
5.94
13
25.7
30.5
27.9
29.39
4.83
8.33
15
26.9
31.8
29.2
32.49
6.60
11.61
17
29.5
34.3
33.0
35.71
7.19
15.60
19
35.8
40.6
38.1
38.51
8.26
16.10
21
38.4
43.2
40.6
41.71
8.71
17.73
23
42.2
47.0
43.2
44.91
9.68
20.90
25
44.7
49.5
45.7
47.98
10.62
21.67
M85049/39-11A
M85049/ 39    -   11   A
     (1)      (2)   (3)  (4)  (5)
(1)：M85049—Series Prefix
(2)：Rear shell type: 39—Right angular cable clipper
(3)：Rear shell jam nut -blank-Non-locking jam nut
                                     S-self-locking jam nut
(4)：shell size 09,11,13,15,17,19,21,23,25
(5)：Finishing: W-Olive-drab cadmium plate
                        N-Nickel
                        A-Anode,black color
                        S-corrosion resistant steel,passivated
MIL-DTL-38999 Series III circular fire-proof electrical connectors class K and S series Connectors Terminal Accessories
Shell code
A max
B max
Mated cable diameter C
D max
E max
F max
G max
H
min
max
09
25.70
30.50
2.49
5.94
21.79
35.10
25.40
21.60
12.70
11
25.70
30.50
3.89
5.94
24.99
36.90
27.90
22.90
12.70
13
30.70
35.60
4.83
8.33
29.39
40.60
27.90
27.90
15.88
15
32.00
36.80
6.60
11.61
32.49
45.70
31.80
29.20
19.05
17
35.80
40.60
7.19
15.60
35.71
49.00
33.00
33.00
19.05
19
38.40
43.20
8.26
16.10
38.51
52.10
34.30
38.10
19.05
21
42.20
47.00
8.71
17.73
41.71
59.70
40.60
40.60
22.23
23
44.70
49.50
9.68
20.90
44.91
65.50
44.50
43.20
25.40
25
48.50
53.30
10.62
21.67
47.98
69.30
47.00
45.70
28.58

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