The Ladder,debarkation, cataloged under National Stock Number 2090-00-264-4517, is classified within Federal Supply Class 2090 (Miscellaneous Ship and Marine Equipment) of the Ship and Marine Equipment group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2090-00-264-4517 |
| Primary Part Number | 804-5000900-DBRK-20FT |
| Item Name | Ladder,debarkation |
| FSC / FSG | 2090 / 20 — Miscellaneous Ship and Marine Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Rung Spacing | 11.000 INCHES NOMINAL IN |
| Length | 20.000 FEET NOMINAL FT |
| Nondefinitive Spec/std Data | A GRADE |
| Width | 144.000 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 804-5000900-DBRK-20FT PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| MILL17447GRADEA | 5/1 Secondary reference U.S. Government activity |
NSN 2090-00-264-4517 is a Ladder,debarkation, manufactured by Naval Sea Systems Command, classified under FSC 2090, Miscellaneous Ship and Marine Equipment. Status: active.
NSN 2090-00-264-4517 has 1 manufacturer part number on file: 804-5000900-DBRK-20FT (Naval Sea Systems Command).
3 possible matches (shared part number, not a government interchangeability claim): 2090-00-264-4518, 2090-00-264-4519, 2090-00-264-4521. Verify interchangeability with system specifications before substitution.
Key specifications for 804-5000900-DBRK-20FT: Rung Spacing: 11.000 INCHES NOMINAL IN; Length: 20.000 FEET NOMINAL FT; Nondefinitive Spec/std Data: A GRADE; Special Features: ROPE RUNG FIREPROOF MILDEW AND WEATHER RESISTANT WATER REPELLENT TREATED; 14 ROPE STRINGERS FIREPROOF TREATED MILDEW AND WEATHER RESISTANT WATER REPELLENT TREATED. 4 specifications are 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.