The Oil Tank Build Up,a, cataloged under National Stock Number 1680-01-563-0823, is classified within Federal Supply Class 1680 (Miscellaneous Aircraft Accessories and Components) of the Aircraft Components and Accessories group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1680-01-563-0823 |
| Item Name | Oil Tank Build Up,a |
| FSC / FSG | 1680 / 16 — Miscellaneous Aircraft Accessories and Components |
| Status | ACTIVE |
| Nuclear Hardness Critical Feature | HARDENED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | H |
| Reference | Meaning |
|---|---|
| 269D4516-055 | 5/9 Secondary reference Schweizer Aircraft Corp. |
| 269D4516-55 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
| 269D4516-55 | D/9 Drawing number reference only Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
| 269D4516-055 | C/1 Advisory reference — outside the item-of-supply concept Northrop Grumman Systems Corporation |
| 269D4516-55 | 5/9 Secondary reference Schweizer Aircraft Corp. |
| 269D4516-055 | C/1 Advisory reference — outside the item-of-supply concept Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
| 269D4516-055 | 3/9 Design control — primary reference Northrop Grumman Systems Corporation |
NSN 1680-01-563-0823 is a Oil Tank Build Up,a, classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
Key specifications for 1680-01-563-0823: Part Name Assigned by Controlling Agency: OIL TANK; Nuclear Hardness Critical Feature: HARDENED. 1 specification is documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.