The Muzzle Hatch Arm Assembly, cataloged under National Stock Number 2040-01-593-6235, is classified within Federal Supply Class 2040 (Marine Hardware and Hull Items) of the Ship and Marine Equipment group. The manufacturer of record is Naval Sea Systems Command. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2040-01-593-6235 |
| Primary Part Number | 721-8217297-A1 |
| Item Name | Muzzle Hatch Arm Assembly |
| FSC / FSG | 2040 / 20 — Marine Hardware and Hull Items |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| 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 |
|---|---|
| 721-8217297-A1 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| H861-8110-A1 | 5/2 Secondary reference U.S. Government activity |
| H861-6000-32 | 5/1 Secondary reference U.S. Government activity |
| 741-8217287-32 | 5/1 Secondary reference Naval Sea Systems Command |
NSN 2040-01-593-6235 is a Muzzle Hatch Arm Assembly, manufactured by Naval Sea Systems Command, classified under FSC 2040, Marine Hardware and Hull Items. Status: active.
NSN 2040-01-593-6235 has 1 manufacturer part number on file: 721-8217297-A1 (Naval Sea Systems Command).
Key specifications for 721-8217297-A1: Overall Width: 95.375 INCHES NOMINAL IN; End Item Identification: PAYLOAD TUBE MUZZLE HATCH ARM. 0 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.