D20419-80 Datasheet, PDF (221/386 Pages) ITT Industries – Military/Aerospace

MIL-C-28840 Connectors
KFS
Box Mounting Receptacle
M28840/12
(Class D and DS)
KFS12
T DIA.
4HOLES
MASTER
POLARIZING
KEY WAY
.898 (22.81)
.878 (22.30)
.130 (3.30)
.100 (2.54)
CHAM.
.015 MIN
50˚
X _40˚
M28840/12
S
KFS12 ^{A G 1 P 1}
BASIC PART NUMBER
CLASS-CODE LETTER
SHELL SIZE DESIGNATOR
INSERT ARRANGEMENT
CONTACT DESIGNATOR
KEY POSITIONS
Shell Size
Designator
A
B
C
D
E
F
G
H
J
Shell
Size
-11
-13
-15
-17
-19
-23
-25
-29
-33
A Thread
Class 2A
.750 -.1P-.2L-D.S.
.875 -.1P-.2L-D.S.
1.062 -.1P-.2L-D.S.
1.125 -.1P-.2L-D.S.
1.312 -.1P-.2L-D.S.
1.500 -.1P-.2L-D.S.
1.625 -.1P-.2L-D.S.
1.812 -.1P-.2L-D.S.
2.000 -.1P-.2L-D.S.
N Dia.
Max.
.750 (19.05)
.875 (22.22)
1.062 (26.97)
1.125 (28.58)
1.312 (33.32)
1.500 (38.10)
1.625 (41.28)
1.812 (46.02)
2.000 (50.80)
N
R
G
O
R
S
O Dia.
(Ref. Mtg.
Hole)
.812 (20.62)
.937 (23.80)
1.124 (28.55)
1.187 (30.15)
1.374 (34.90)
1.562 (39.67)
1.687 (42.85)
1.937 (49.20)
2.124 (53.95)
A THREAD
MAX. PANEL THICKNESS
.188 (4.78)
1.625 _MAX.
(41.28)
R
T.P.
.750 (19.05)
.843 (21.41)
.968 (24.59)
1.015 (25.78)
1.140 (28.96)
1.281 (32.54)
1.392 (35.36)
1.568 (39.83)
1.734 (44.04)
S
+_.020 (0.51)
1.023 (25.98)
1.138 (28.91)
1.258 (31.95)
1.383 (35.13)
1.508 (38.30)
1.718 (43.64)
1.818 (46.18)
2.138 (54.31)
2.328 (59.13)
T Dia.
+. 015 (0.38)
- .000 (0.00)
.115 (2.92)
.115 (2.92)
.115 (2.92)
.115 (2.92)
.115 (2.92)
.115 (2.92)
.142 (3.61)
.142 (3.61)
.168 (4.27)
G
Max.
.755 (19.18)
.880 (22.35)
1.005 (25.53)
1.130 (28.70)
1.255 (31.88)
1.443 (36.65)
1.567 (39.80)
1.880 (47.75)
2.067 (52.50)
Jam Nut Receptacle
M28840/14
(Class D and DS)
KFS14
K
MASTER POLARIZING
KEY WAY
HEX, NUT
A THREAD
1.033 (26.24)
1.013 (25.73)
.026 (0.66)
.010 (0.25)
.130 (3.30)
.100 (2.54)
M28840/14
KFS14 A G 1 P 1
BASIC PART NUMBER
CLASS-CODE LETTER
SHELL SIZE DESIGNATOR
INTSERT ARRANGEMENT
CONTACT DESIGNATOR
KEY POSITIONS
G
T
L
ACROSS FLAT
G
.096 (2.44)
.089 (2.26)
B
R
N
M THREAD
FULL THREAD
WITHIN .062 (1.57)
OF FLANGE
MAX
PANEL
THICKNESS
.188 (4.78)
O-RING
V THREAD
2.062 (52.37) MAX.
Shell Size
Designator
A
B
C
D
E
F
G
H
J
Shell
Size
-11
-13
-15
-17
-19
-23
-25
-29
-33
A Thread
Class
2A
.750 -.1P-.2L-D.S.
M Thread
Class
2A
7/8-20 UNEF
.875 -.1P-.2L-D.S.
1-20 UNEF
1.062 -.1P-.2L-D.S. 1-3/16-18 UNEF
1.125 -.1P-.2L-D.S. 1-1/4-18 UNEF
1.312 -.1P-.2L-D.S. 1-7/16-18 UNEF
1.500 -.1P-.2L-D.S. 1-5/8-18 UNEF
1.625 -.1P-.2L-D.S. 1-3/4-18 UNS
1.812 -.1P-.2L-D.S. 1-15/16-16 UN
2.000 -.1P-.2L-D.S. 2-1/8-16 UN
V Thread
Class
2A
3/4-20 UNEF
7/8-20 UNEF
1-20 UNEF
1-1/8-18 UNEF
1-1/4-18 UNEF
1-7/16-18 UNEF
1-9/16-18 UNEF
1-7/8-16 UN
2-1/16-16 UNS
G
+_.010 (0.25)
1.264 (32.11)
K
+_.010 (0.25)
1.358 (34.49)
L
+.009 (0.23)
-.000 (0.00)
.832 (21.13)
N
Max.
.750 (19.05)
R
Max.
.875 (22.22)
B
+_.005 (0.13)
.974 (24.74)
T
+_.017 (0.43)
1.062 (26.97)
1.389 (35.28) 1.498 (38.05) .957 (24.31) .875 (22.22) 1.000 (25.40) 1.099 (27.91) 1.188 (30.18)
1.577 (40.06) 1.671 (42.44) 1.144 (29.06) 1.062 (26.97) 1.188 (30.18) 1.287 (32.69) 1.375 (34.92)
1.639(41.63) 1.733 (44.02) 1.207 (30.66) 1.125 (28.58) 1.250 (31.75) 1.349 (34.26) 1.438 (36.53)
1.827 (46.41) 1.921 (48.79) 1.394 (35.41) 1.312 (33.32) 1.438 (36.53) 1.537 (39.04) 1.625 (41.28)
2.014 (51.16) 2.108 (53.54) 1.582 (40.18) 1.500 (38.10) 1.625 (41.28) 1.724 (43.79) 1.812 (46.02)
2.139 (54.33) 2.233 (56.72) 1.707 (43.36) 1.625 (41.28) 1.750 (44.45) 1.849 (46.96) 2.000 (50.80)
2.327 (59.11) 2.425 (61.60) 1.894 (48.11) 1.812 (46.02) 1.938 (49.23) 2.037 (51.74) 2.188 (55.58)
2.514 (63.86) 2.608 (66.24) 2.082 (52.88) 2.000 (50.80) 2.125 (54.98) 2.224 (56.49) 2.375 (60.32
Dimensions are shown in inches (millimeters).
Dimensions subject to change.
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