MIL-PRF-1/374F
SEE NOTE 5
Dimensions in inches with metric
equivalents (mm) in parentheses
Ltr
Minimum
Maximum
Conformance inspection, part 1 (See Table 1, note 8)
Inch
Millimeter
Inch
Millimeter
C
.005
(0.13)
.008
(0.20)
F
1.125
(28.58)
1.145
(29.08)
J
.538
(13.67)
.543
(13.79)
N
.065
(1.65)
Conformance inspection, part 2
A
7.38
(187.45)
B
1.56
(39.62)
1.94
(49.28)
D
4.88
(123.95)
5.00
(127.00)
M
4.06
(103.12)
4.16
(105.66)
P
.25
(6.35)
.34
(8.64)
Conformance inspection, part 3
E
.735
(18.67)
H
.245
(6.22)
.255
(6.48)
Reference dimensions
G
.450 (11.43)
K
.281 (7.14)
L
.380 (9.65)
Q
.406 (10.31)
NOTES:
1. Shall be gold plated min 10 MSI or silver plated 15 MSI external surfaces.
2. Contact portion of disc measured radially which must be free from splits or tears, must be smooth and flat.
3. Plate cavity center conductor gold 10 MSI or 15 MSI.
4. The tube shall be capable of being inserted in concentric cylinder (see figure 2) without binding (equivalent
gauging method may be used).
5. Pee Wee 3 Pin Base (A3-108 or equivalent).
FIGURE 1. Outline drawing of electron tube type 2K48.
4