MIL-S-21156 › Historical Revision Information
Steel Bars, Heat Treated (for 20mm and 30mm Aircraft Gun Barrels) (No Superseding Document)
Steel Bars, Heat Treated (for 20mm and 30mm Aircraft Gun Barrels) (No Superseding Document)
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Document Number
MIL-S-21156
Revision Level
AMENDMENT 1
Status
Superseded
Publication Date
June 26, 1962
Page Count
2 pages