NSN 3040-01-358-2526 · NIIN 013582526 · Part number 803-6397390 PIECE 11
Naval Sea Systems Command · FSC 3040 — Miscellaneous Power Transmission Equipment · FSG 30 — Mechanical Power Transmission Equipment · CAGE 53711
Government record, cited
NSN 3040-01-358-2526 — this item is cataloged by the U.S. Government under National Stock Number 3040-01-358-2526. Manufacturer of record part number: 803-6397390 PIECE 11.
Also searched as3040-01-358-2526 ·
3040013582526 ·
NIIN 013582526 ·
01-358-2526 ·
FSC 3040 Miscellaneous Power Transmission Equipment · CAGE 53711 · 803-6397390 PIECE 11 · 803-6397390
Second End Distance From Keyway Center to End: 0.8700 INCHES NOMINAL IN
First End Style: PLAIN
Second End Keyway Width: 0.9430 INCHES MAXIMUM IN
Identification
NSN: 3040-01-358-2526
NIIN: 013582526
FSC: 3040 — Miscellaneous Power Transmission Equipment
FSG: 30 — Mechanical Power Transmission Equipment
Primary part number: 803-6397390 PIECE 11
Manufacturer: Naval Sea Systems Command
General Description
The Shaft,shouldered, cataloged under National Stock Number 3040-01-358-2526, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
3040-01-358-2526
Primary Part Number
803-6397390 PIECE 11
Item Name
Shaft,shouldered
FSC / FSG
3040 / 30 — Miscellaneous Power Transmission Equipment
Manufacturer
Naval Sea Systems Command
Status
ACTIVE
Step Quantity
3
First End Diameter
0.7500 INCHES NOMINAL IN
Second End Diameter
0.5010 INCHES MAXIMUM IN
Largest Step Diameter
0.7500 INCHES MAXIMUM IN
Second End Distance From Keyway Center to End
0.8700 INCHES NOMINAL IN
First End Style
PLAIN
Second End Keyway Width
0.9430 INCHES MAXIMUM IN
End Similarity
NOT IDENTICAL
Second End Style
WOODRUFF KEYWAY
Material
STEEL
External Keyway Length
0.5000 INCHES MAXIMUM SECOND END IN
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
⇄Related Items6
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
3040-01-358-2527803-6397390 PIECE 12POSSIBLE MATCH
SHAFT,SHOULDERED
Possible match (shared part number)Naval Sea Systems Command
4820-01-358-2558803-6397391 PIECE 2POSSIBLE MATCH
BALL,VALVE,PORTED
Possible match (shared part number)Naval Sea Systems Command
4820-01-358-2564803-6397390 PIECE 7POSSIBLE MATCH
STEM,FLUID VALVE
Possible match (shared part number)Naval Sea Systems Command
4730-01-367-0167803-6397390 PC 1 30 MESHPOSSIBLE MATCH
STRAINER,SEDIMENT
Possible match (shared part number)Naval Sea Systems Command
4820-01-367-2129803-6397390 PIECE 14POSSIBLE MATCH
STEM,FLUID VALVE
Possible match (shared part number)Naval Sea Systems Command
4330-01-371-2671803-6397390 PIECE 16POSSIBLE MATCH
MAGNET ASSEMBLY,FILTER
Possible match (shared part number)Naval Sea Systems Command
NSN 3040-01-358-2526 is a Shaft,shouldered, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
What part numbers are listed for NSN 3040-01-358-2526?
NSN 3040-01-358-2526 has 1 manufacturer part number on file: 803-6397390 PIECE 11 (Naval Sea Systems Command).
What NSN replaces 3040-01-358-2526?
6 possible matches (shared part number, not a government interchangeability claim): 3040-01-358-2527, 4820-01-358-2558, 4820-01-358-2564. Verify interchangeability with system specifications before substitution.
What are the specifications of 803-6397390 PIECE 11?
Key specifications for 803-6397390 PIECE 11: Step Quantity: 3; First End Diameter: 0.7500 INCHES NOMINAL IN; Second End Diameter: 0.5010 INCHES MAXIMUM IN; Largest Step Diameter: 0.7500 INCHES MAXIMUM IN. 11 specifications are documented in the U.S. Government catalog.
Is NSN 3040-01-358-2526 hazardous material?
No hazard code in the DLA record (HMIC N). 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.