The Flange, cataloged under National Stock Number 5820-01-032-8802, is classified within Federal Supply Class 5820 (Radio and Television Communication Equipment, Except Airborne) of the Communication, Detection, and Coherent Radiation Equipment group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 10 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5820-01-032-8802 |
| Primary Part Number | D20-1-1ITM3SQ |
| Item Name | Flange |
| FSC / FSG | 5820 / 58 — Radio and Television Communication Equipment, Except Airborne |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Criticality Code Justification | ZZZY |
| Reference Number Differentiating Characteristics | QUALITY ASSURANCE TESTED FOR SUBMARINE ANTENNA APPLICATION |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| D20-1-1ITM3SQ | Naval Inventory Control Point Mechanicsburg (USA) |
| 03400003 | U.s.a. Spares Inc. (USA) |
| 03400003 | Naval Sea Systems Command (USA) |
| 03400003SQ | Naval Inventory Control Point Mechanicsburg (USA) |
| 03400001 FIND 2SQ | Naval Inventory Control Point Mechanicsburg (USA) |
| C20-1-4SQ | Naval Inventory Control Point Mechanicsburg (USA) |
| 03400003 | Guill Tool & Engineering Co Inc Div Guill Defense (USA) |
| FLG4SQ | Naval Inventory Control Point Mechanicsburg (USA) |
| 03400003 | D. L. Martin Co. (USA) |
| 03400003 | Derbyshire Machine & Tool Co (USA) |
| Reference | Meaning |
|---|---|
| 03400003 | 5/9 Secondary reference U.S. Government activity |
| FLG4 | 5/1 Secondary reference Derbyshire Machine & Tool Co |
| 03400003 | 3/1 Design control — primary reference Naval Undersea Warfare Ctr |
| 03400001 FIND 2 | 5/9 Secondary reference U.S. Government activity |
| D20-1-1ITEM3 | 5/1 Secondary reference U.S. Government activity |
| C20-1-4 | 5/1 Secondary reference U.S. Government activity |
| 03400001-ITEM-2 | D/9 Drawing number reference only U.S. Government activity |
| 03400001 REV D ITEM 2 | D/9 Drawing number reference only U.S. Government activity |
NSN 5820-01-032-8802 is a Flange, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 5820, Radio and Television Communication Equipment, Except Airborne. Status: active.
NSN 5820-01-032-8802 has 10 manufacturer part numbers on file: D20-1-1ITM3SQ (Naval Inventory Control Point Mechanicsburg), 03400003 (U.s.a. Spares Inc.), 03400003 (Naval Sea Systems Command), 03400003SQ (Naval Inventory Control Point Mechanicsburg), 03400001 FIND 2SQ (Naval Inventory Control Point Mechanicsburg) and 5 more.
1 possible match (shared part number, not a government interchangeability claim): 5985-01-651-6882. Verify interchangeability with system specifications before substitution.
Key specifications for D20-1-1ITM3SQ: Criticality Code Justification: ZZZY; End Item Identification: ANTENNA TRANSFER ASSEMBLY; Reference Number Differentiating Characteristics: QUALITY ASSURANCE TESTED FOR SUBMARINE ANTENNA APPLICATION. 2 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 5820-01-032-8802 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.