NSN 5340-01-168-1891 · NIIN 011681891 · Part number LJ-549A
Siemens Energy, Inc. · FSC 5340 — Hardware, Commercial · FSG 53 — Hardware and Abrasives · CAGE 16712
Government record, cited
NSN 5340-01-168-1891 — this item is cataloged by the U.S. Government under National Stock Number 5340-01-168-1891. Manufacturer of record part number: LJ-549A.
Material Document and Classification: MIL-S-16782 MIL SPEC SINGLE MATERIAL RESPONSE
Peripheral Shape Style: RECTANGLE, FOUR HOLES
Material: STEEL
2 manufacturer part numbers on file
Manufacturer of record: Siemens Energy, Inc.
Identification
NSN: 5340-01-168-1891
NIIN: 011681891
FSC: 5340 — Hardware, Commercial
FSG: 53 — Hardware and Abrasives
Primary part number: LJ-549A
Manufacturer: Siemens Energy, Inc.
General Description
The Cover,access, cataloged under National Stock Number 5340-01-168-1891, 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 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 11 items share a part number with this NSN in the catalog (possible match — not a government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.
Technical Specifications
Parameter
Value
NSN
5340-01-168-1891
Primary Part Number
LJ-549A
Item Name
Cover,access
FSC / FSG
5340 / 53 — Hardware, Commercial
Manufacturer
Siemens Energy, Inc.
Status
ACTIVE
Material Document and Classification
MIL-S-16782 MIL SPEC SINGLE MATERIAL RESPONSE
Peripheral Shape Style
RECTANGLE, FOUR HOLES
Material
STEEL
Lifecycle & Compliance
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
⇄Related Items11
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5340-01-168-1892GJ-549AKPOSSIBLE MATCH
COVER,ACCESS
Possible match (shared part number)Siemens Energy, Inc.
2825-01-168-2027GJ-52NAULPOSSIBLE MATCH
DIAPHRAGM,STEAM TURBINE
Possible match (shared part number)Siemens Energy, Inc.
5342-01-168-2029GJ-385F-2POSSIBLE MATCH
BRACKET,BEARING,STEAM TURBINE
Possible match (shared part number)Siemens Energy, Inc.
2825-01-168-2031GJ-15SX1POSSIBLE MATCH
BAFFLE,STEAM TURBINE
Possible match (shared part number)Siemens Energy, Inc.
2825-01-168-2032GJ-110JX1ULPOSSIBLE MATCH
HOUSING,LABYRINTH,STEAM TURBINE
Possible match (shared part number)Siemens Energy, Inc.
2825-01-168-2033GJ-110KXPOSSIBLE MATCH
HOUSING,LABYRINTH,STEAM TURBINE
Possible match (shared part number)Siemens Energy, Inc.
2825-01-168-2034GJ-110HX1POSSIBLE MATCH
HOUSING,LABYRINTH,STEAM TURBINE
Possible match (shared part number)Siemens Energy, Inc.
2825-01-168-2035LJ-317POSSIBLE MATCH
HOUSING,STEAM TURBINE
Possible match (shared part number)Siemens Energy, Inc.
2825-01-168-2036LJ-317X1POSSIBLE MATCH
HOUSING,STEAM TURBINE
Possible match (shared part number)Siemens Energy, Inc.
2825-01-169-7556MS549BZPOSSIBLE MATCH
COVER ASSEMBLY,TURB
Possible match (shared part number)Siemens Energy, Inc.
NSN 5340-01-168-1891 is a Cover,access, manufactured by Siemens Energy, Inc., classified under FSC 5340, Hardware, Commercial. Status: active.
What part numbers are listed for NSN 5340-01-168-1891?
NSN 5340-01-168-1891 has 2 manufacturer part numbers on file: H-3503PIECE57 (Siemens Energy, Inc.), LJ-549A (Siemens Energy, Inc.).
What NSN replaces 5340-01-168-1891?
11 possible matches (shared part number, not a government interchangeability claim): 5340-01-168-1892, 2825-01-168-2027, 5342-01-168-2029. Verify interchangeability with system specifications before substitution.
What are the specifications of LJ-549A?
Key specifications for LJ-549A: Material Document and Classification: MIL-S-16782 MIL SPEC SINGLE MATERIAL RESPONSE; Peripheral Shape Style: RECTANGLE, FOUR HOLES; Material: STEEL. 3 specifications are documented in the U.S. Government catalog.
Is NSN 5340-01-168-1891 hazardous material?
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
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.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.