The Cover,access, cataloged under National Stock Number 5340-01-169-0588, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Siemens Energy, Inc.. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-169-0588 |
| Primary Part Number | M-549ZMX1 |
| Item Name | Cover,access |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Siemens Energy, Inc. |
| Status | ACTIVE |
| Material Document and Classification | QQ-S-763,CL 416,COND A FED SPEC SINGLE MATERIAL RESPONSE |
| Material | STEEL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| M-549ZMX1 PRIMARY | Siemens Energy, Inc. (USA) |
| D-56476 PIECE 9 | Siemens Energy, Inc. (USA) |
| Reference | Meaning |
|---|---|
| D-56476 | D/9 Drawing number reference only Siemens Energy, Inc. |
NSN 5340-01-169-0588 is a Cover,access, manufactured by Siemens Energy, Inc., classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-169-0588 has 2 manufacturer part numbers on file: M-549ZMX1 (Siemens Energy, Inc.), D-56476 PIECE 9 (Siemens Energy, Inc.).
2 possible matches (shared part number, not a government interchangeability claim): 4810-01-182-3534, 4810-01-182-4503. Verify interchangeability with system specifications before substitution.
Key specifications for M-549ZMX1: Material Document and Classification: QQ-S-763,CL 416,COND A FED SPEC SINGLE MATERIAL RESPONSE; Material: STEEL. 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.
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.