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NSN 3040-01-481-2268Government record, cited
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Shaft, Shouldered3040-01-481-2268

NSN 3040-01-481-2268 · NIIN 014812268 · Part number 123-1680561 PC 41
Naval Sea Systems Command · FSC 3040 — Miscellaneous Power Transmission Equipment · FSG 30 — Mechanical Power Transmission Equipment · CAGE 53711
Government record, cited
NSN 3040-01-481-2268 — this item is cataloged by the U.S. Government under National Stock Number 3040-01-481-2268. Manufacturer of record part number: 123-1680561 PC 41.
Also searched as  3040-01-481-2268 · 3040014812268 · NIIN 014812268 · 01-481-2268 · FSC 3040 Miscellaneous Power Transmission Equipment · CAGE 53711 · 123-1680561 PC 41 · 1680561 · 1680562 · 123-1680562 PC 41
Nearby stock numbers  ·
Features
  • Shaft,shouldered — FSC 3040
  • Second End External Thread Length: 0.5000 INCHES NOMINAL IN
  • Step Quantity: 7
  • First End Diameter: 1.2500 INCHES NOMINAL IN
  • Second End Diameter: 0.5000 INCHES NOMINAL IN
  • Largest Step Diameter: 1.5000 INCHES NOMINAL IN
  • First End Style: INTERNAL THREADED
  • First End Internal Thread Length: 1.1250 INCHES NOMINAL IN
Identification
  • NSN: 3040-01-481-2268
  • NIIN: 014812268
  • FSC: 3040 — Miscellaneous Power Transmission Equipment
  • FSG: 30 — Mechanical Power Transmission Equipment
  • Primary part number: 123-1680561 PC 41
  • Manufacturer: Naval Sea Systems Command
General Description

The Shaft,shouldered, cataloged under National Stock Number 3040-01-481-2268, 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 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 10 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3040-01-481-2268
Primary Part Number123-1680561 PC 41
Item NameShaft,shouldered
FSC / FSG3040 / 30 — Miscellaneous Power Transmission Equipment
ManufacturerNaval Sea Systems Command
StatusACTIVE
Second End External Thread Length0.5000 INCHES NOMINAL IN
Step Quantity7
First End Diameter1.2500 INCHES NOMINAL IN
Second End Diameter0.5000 INCHES NOMINAL IN
Largest Step Diameter1.5000 INCHES NOMINAL IN
First End StyleINTERNAL THREADED
First End Internal Thread Length1.1250 INCHES NOMINAL IN
Material Document and ClassificationMIL-S-890 MIL SPEC SINGLE MATERIAL RESPONSE
End SimilarityNOT IDENTICAL
Second End StyleEXTERNAL THREADED
MaterialSTEEL
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
⇄ Related Items 10
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
3040-01-481-2271123-1680561 PC 40 POSSIBLE MATCH
SHAFT,SHOULDERED
Possible match (shared part number)Naval Sea Systems Command
3040-01-481-2274123-1680561 PC 39 POSSIBLE MATCH
SHAFT,SHOULDERED
Possible match (shared part number)Naval Sea Systems Command
3040-01-481-2278123-1680561 PC 45 POSSIBLE MATCH
SHAFT,SHOULDERED
Possible match (shared part number)Naval Sea Systems Command
3040-01-481-2282123-1680561 PC 52 POSSIBLE MATCH
SHAFT,SHOULDERED
Possible match (shared part number)Naval Sea Systems Command
3040-01-481-2296123-1680561 PC 34 POSSIBLE MATCH
SHAFT,SHOULDERED
Possible match (shared part number)Naval Sea Systems Command
3020-01-481-3585123-1680562 PC 46 POSSIBLE MATCH
GEAR,BEVEL
Possible match (shared part number)Naval Sea Systems Command
3020-01-481-3595123-1680562 PC 47 POSSIBLE MATCH
GEAR,BEVEL
Possible match (shared part number)Naval Sea Systems Command
3020-01-481-3598123-1680562 PC 48 POSSIBLE MATCH
GEAR,BEVEL
Possible match (shared part number)Naval Sea Systems Command
3020-01-481-3601123-1680562 PC 49 POSSIBLE MATCH
GEAR,BEVEL
Possible match (shared part number)Naval Sea Systems Command
3010-01-481-3820123-1680562 PC 69 POSSIBLE MATCH
COUPLING,SHAFT,RIGID
Possible match (shared part number)Naval Sea Systems Command
Cross-Reference Index
Part NumberManufacturer
123-1680561 PC 41 PRIMARY Naval Sea Systems Command (USA)
123-1680562 PC 41 PRIMARY Naval Sea Systems Command (USA)
Reference documents
ReferenceMeaning
1680561 D/9 Drawing number reference only
Naval Sea Systems Command
1680562 D/9 Drawing number reference only
Naval Sea Systems Command
Related Parts
3040-01-481-2271POSSIBLE MATCH
SHAFT,SHOULDERED
123-1680561 PC 40
3040-01-481-2274POSSIBLE MATCH
SHAFT,SHOULDERED
123-1680561 PC 39
3040-01-481-2278POSSIBLE MATCH
SHAFT,SHOULDERED
123-1680561 PC 45
3040-01-481-2282POSSIBLE MATCH
SHAFT,SHOULDERED
123-1680561 PC 52
3040-01-481-2296POSSIBLE MATCH
SHAFT,SHOULDERED
123-1680561 PC 34
3020-01-481-3585POSSIBLE MATCH
GEAR,BEVEL
123-1680562 PC 46
3020-01-481-3595POSSIBLE MATCH
GEAR,BEVEL
123-1680562 PC 47
3020-01-481-3598POSSIBLE MATCH
GEAR,BEVEL
123-1680562 PC 48
3020-01-481-3601POSSIBLE MATCH
GEAR,BEVEL
123-1680562 PC 49
3010-01-481-3820POSSIBLE MATCH
COUPLING,SHAFT,RIGID
123-1680562 PC 69

Frequently Asked Questions

What is NSN 3040-01-481-2268?

NSN 3040-01-481-2268 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 3040-01-481-2268?

NSN 3040-01-481-2268 has 2 manufacturer part numbers on file: 123-1680561 PC 41 (Naval Sea Systems Command), 123-1680562 PC 41 (Naval Sea Systems Command).

What NSN replaces 3040-01-481-2268?

10 possible matches (shared part number, not a government interchangeability claim): 3040-01-481-2271, 3040-01-481-2274, 3040-01-481-2278. Verify interchangeability with system specifications before substitution.

What are the specifications of 123-1680561 PC 41?

Key specifications for 123-1680561 PC 41: Second End External Thread Length: 0.5000 INCHES NOMINAL IN; Step Quantity: 7; First End Diameter: 1.2500 INCHES NOMINAL IN; Second End Diameter: 0.5000 INCHES NOMINAL IN. 11 specifications are documented in the U.S. Government catalog.

Is NSN 3040-01-481-2268 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.

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✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.
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