MIL-PRF-1/1660C
Dimensions
Ltr
Inches
Millimeters
Notes
Min
Max
Min
Max
Conformance inspection, part 2
A
1.500
1.560
38.10
39.62
B
---
1.214
---
30.84
D
1.125
1.165
28.58
29.59
F
.800
.840
20.32
21.34
G
.462
.477
11.73
12.12
N
1.025
1.035
26.04
26.29
2
R
.655
.665
16.64
16.89
2
T
.213
.223
5.41
5.66
U
.315
.325
8.00
8.26
3
Conformance inspection, part 3 (see note 1)
C
.125
.185
3.18
4.70
H
---
.040
---
1.02
J
.766
.826
19.46
20.98
K
.025
.046
0.64
1.17
L
1.234
1.264
31.34
32.11
M
1.180
1.195
29.97
30.35
P
.752
.792
19.10
20.12
V
---
.086
---
2.18
W
---
.100
---
2.54
Y
.105
.145
2.67
3.68
Z
.650
.850
16.51
21.59
Dimensions for electrode
Ltr
contact surfaces
Inches
Millimeters
Min
Max
Min
Max
AA
.035
.361
0.89
9.17
AB
1.021
1.101
25.93
27.97
AC
1.219
1.413
30.96
35.89
AD
1.160
1.500
29.46
38.10
NOTES:
1.
Dimensions shall be checked during the initial production and annually thereafter. An accept on zero defect
sampling plan shall be used, with sample size of three tubes, and with an acceptance number of zero failures.
In the event of failure, the test will be made as a part of conformance inspection, part 2, acceptance level 6.5
(see 21/). Annual sampling plan shall be reinstated after three consecutive samples have been accepted.
2.
The total indicated runout of the anode and grid contact surfaces with respect to the cathode contact surface
will not exceed .020 inch (0.51 mm).
3.
Tht total indicated runout of the cathode contact surface with respect to the heater contact surface will not
exceed .012 inch (0.30 mm).
4.
-X, +Y, +Z, -Z indicate direction of the applied shock and vibration in relation to the tube configuration.
FIGURE 1. Outline drawing of electron tube type 8403 - Continued.
7
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