MIL-PRF-1/1428G
Dimensions
Ltr
Inches
Millimeters
Min
Max
Min
Max
Conformance inspection, part 2
A
---
2.355
---
59.82
B
.985 DIA
1.015 DIA
25.02 DIA
25.78 DIA
C
---
1.150 DIA
---
29.21 DIA
D
.295
.340
7.49
8.64
E
1.579 DIA
1.639 DIA
40.11 DIA
41.63 DIA
F
1.015 DIA
25.78 DIA
G
---
.500
---
12.70
H
---
.438
---
11.13
J
---
.469 DIA
---
11.91 DIA
K
.250
.500
6.35
12.70
L
1.500
1.600
38.10
40.64
M
.335
.585
8.51
14.86
N
.250
.360
6.35
9.14
P
.785
.815
19.94
20.70
Q
.650 DIA
.710 DIA
16.51 DIA
18.03 DIA
R
---
.700
---
17.78
Reference dimensions
S
.670
17.02
T
.795
20.19
U
45°
NOTES:
1. Anode connector shall not extend above surface "W ".
2. All mounting holes, including grid and filament tab holes, shall clear No. 4 screws, (.120 inch (3.05 mm) diameter
holes).
3. W rap of filament tab on protector cap optional, right or left side.
4. Tab edge shall not extend beyond surface "X".
5. Grid and filament tabs shall not interfere with cathode flange mounting holes.
FIGURE 1. Outline dimensions of electron tube type 7621 - Continued.
NOTES
Referenced documents. In addition to MIL-PRF-1, this specification sheet sheet references MIL-STD-1311.
Changes from previous issue. The margins of this specification are marked with vertical lines to indicate where changes from the
previous issue were made. This was done as a convenience only and the Government assumes no liability whatsoever for any
inaccuracies in these notations. Bidders and contractors are cautioned to evaluate the requirements of this document based on the entire
content irrespective of the marginal notations and relationship to the previous issue.
Custodians:
Preparing activity:
Army - CR
DLA - CC
Navy - EC
Air Force - 11
(Project 5960-3743)
DLA - CC
Review activities:
Navy - AS, CG, MC, OS
Air Force - 99
NOTE: The activities listed above were interested in this document as of the date of this document. Since organizations and
responsibilities can change, you should verify the currency of the information above using the ASSIST Online database at
www.dodssp.daps.mil.
5
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