MIL-PRF-1/1055F
NOTES:
1. Exhaust tubulation shall not be subjected to any mechanical stress.
2.
Eccentricity shall be gauged at points designated and what shall be as follows (note 3 shall apply):
Eccentricity
Reference
Contact
Inches
Millimeters
Anode
.010 max
.25
Grid contact
Cathode
.010 max
.25
Grid contact
Anode-cathode
.020 TIR
.51
Grid contact
Heater No. 1
.015 max
.38
Grid contact
Heater No. 2
.015 max
.38
Grid contact
Heater No. 1 and 2
.030 TIR
.76
Grid contact
3.
These dimensions shall be tested on 10 tubes per month when in continuous production. Failure of more
than one tube to meet tolerances for any dimension shall cause that dimension to become, for all lots in
process, part of conformation inspection, part 2.
4.
Contact surface shall be confined to this area.
5.
Only these surfaces shall be used for tube stops or clamping.
6.
Maximum diameter shall not be increased by solder.
7.
Tube marking shall be confined to this area.
FIGURE 1. Outline drawing of electron tube type 6442 - Continued.
Custodians:
Preparing activity:
Army - CR
DLA - CC
Navy - EC
Air Force - 11
(Project 5960-3617)
DLA - CC
Review activities:
Navy - AS, CG, MC, OS
Air Force - 19
10
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