The material consists of 4130 steel plate, conforming to MIL-S-18729 condition F; it is part of P/N 124553 and utilized in the AN/AVQ-26 Target Designator Set-Electro-Optical.
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FSC Application Data
The component is used for Airborne Gunnery Fire Control systems on various aircraft, including the RF-4C, F-4E, and E-111F ACFT.