The Muzzle Door Assembl, cataloged under National Stock Number 4820-01-475-3099, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. The record lists 15 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 13 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Muzzle Door Assembl |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Naval Inventory Control Point Mechanicsburg (CAGE 03950) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-475-3099 |
| Primary Part Number | 751-6402606-1L1 |
| Item Name | Muzzle Door Assembl |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 751-6402606-1L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 751-6402620 ASSEMBLY 88L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 751-6402604 ITEM1L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 751-6402602 FIND 1L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 751-6402608 ITEM1L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 751-6402602-1L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 751-6402606 ITEM1L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 751-6402620-AY88L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 211029474L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 751-6402608-1L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 751-6402608 FIND1L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 751-6402606 FIND1L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 751-6402602 ITEM 1L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 751-6402604 FIND1L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 751-6402604-1L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 751-6402608 FIND1 | 5/1 Secondary reference Naval Sea Systems Command |
| 751-6402602 ITEM 1 | 5/1 Secondary reference Naval Sea Systems Command |
| 751-6402606 ITEM1 | 5/1 Secondary reference Naval Sea Systems Command |
| 751-6402608-1 | 5/1 Secondary reference Naval Sea Systems Command |
| 751-6402602-1 | 5/1 Secondary reference Naval Sea Systems Command |
| 751-6402604-1 | 5/1 Secondary reference Naval Sea Systems Command |
| 751-6402602 FIND 1 | 5/1 Secondary reference Naval Sea Systems Command |
| 211029474 | 3/1 Design control — primary reference Naval Sea Systems Command |
| 751-6402606 FIND1 | 5/1 Secondary reference Naval Sea Systems Command |
| 751-6402620 ASSEMBLY 88 | 5/1 Secondary reference Naval Sea Systems Command |
| 751-6402604 FIND1 | 5/1 Secondary reference Naval Sea Systems Command |
| 751-6402604 ITEM1 | 5/1 Secondary reference Naval Sea Systems Command |
| 751-6402606-1 | 5/1 Secondary reference Naval Sea Systems Command |
NSN 4820-01-475-3099 is a Muzzle Door Assembl, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-475-3099 has 15 manufacturer part numbers on file: 751-6402606-1L1 (Naval Inventory Control Point Mechanicsburg), 751-6402620 ASSEMBLY 88L1 (Naval Inventory Control Point Mechanicsburg), 751-6402604 ITEM1L1 (Naval Inventory Control Point Mechanicsburg), 751-6402602 FIND 1L1 (Naval Inventory Control Point Mechanicsburg), 751-6402608 ITEM1L1 (Naval Inventory Control Point Mechanicsburg) and 10 more.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 4820-01-475-3099 has DEMIL Code D. 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.