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NSN 3040-01-120-0428Government record, cited
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Shaft, Shouldered3040-01-120-0428

NSN 3040-01-120-0428 · NIIN 011200428 · Part number 709-4684912 ITEM 22
Naval Sea Systems Command · FSC 3040 — Miscellaneous Power Transmission Equipment · FSG 30 — Mechanical Power Transmission Equipment · CAGE 53711
Government record, cited
NSN 3040-01-120-0428 — this item is cataloged by the U.S. Government under National Stock Number 3040-01-120-0428. Manufacturer of record part number: 709-4684912 ITEM 22.
Also searched as  3040-01-120-0428 · 3040011200428 · NIIN 011200428 · 01-120-0428 · FSC 3040 Miscellaneous Power Transmission Equipment · CAGE 53711 · 709-4684912 ITEM 22 · 709-4684912 · 709-4684912 ITE · 87832-1641 ITEM 22 · 87832-1641
Nearby stock numbers  ·
Features
  • Shaft,shouldered — FSC 3040
  • Surface Finish: 63.0 MICROINCHES
  • Step Quantity: 6
  • First End Diameter: 0.7470 INCHES MINIMUM AND 0.7490 INCHES MAXIMUM IN
  • First End Distance From Keyway Center to End: 0.716 INCHES NOMINAL IN
  • Largest Step Diameter: 1.184 INCHES MINIMUM AND 1.186 INCHES MAXIMUM IN
  • First End Style: INDENTED FLAT KEYWAY
  • Material Document and Classification: QQ-N-281,CLASS A,FORM 1 FED SPEC SINGLE MATERIAL RESPONSE
Identification
  • NSN: 3040-01-120-0428
  • NIIN: 011200428
  • FSC: 3040 — Miscellaneous Power Transmission Equipment
  • FSG: 30 — Mechanical Power Transmission Equipment
  • Primary part number: 709-4684912 ITEM 22
  • Manufacturer: Naval Sea Systems Command
General Description

The Shaft,shouldered, cataloged under National Stock Number 3040-01-120-0428, 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 12 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 9 items share a part number with this NSN in the catalog (possible match — not a government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
NSN3040-01-120-0428
Primary Part Number709-4684912 ITEM 22
Item NameShaft,shouldered
FSC / FSG3040 / 30 — Miscellaneous Power Transmission Equipment
ManufacturerNaval Sea Systems Command
StatusACTIVE
Surface Finish63.0 MICROINCHES
Step Quantity6
First End Diameter0.7470 INCHES MINIMUM AND 0.7490 INCHES MAXIMUM IN
First End Distance From Keyway Center to End0.716 INCHES NOMINAL IN
Largest Step Diameter1.184 INCHES MINIMUM AND 1.186 INCHES MAXIMUM IN
First End StyleINDENTED FLAT KEYWAY
Material Document and ClassificationQQ-N-281,CLASS A,FORM 1 FED SPEC SINGLE MATERIAL RESPONSE
First End Keyway Depth0.105 INCHES MINIMUM AND 0.118 INCHES MAXIMUM IN
End SimilarityIDENTICAL
MaterialNICKEL ALLOY
External Keyway Length1.281 INCHES NOMINAL FIRST END IN
First End Keyway Width0.1875 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL Q — CCL Item — Commerce Control List
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
⇄ Related Items 9
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
3040-01-126-737887832-1641 ITEM 34 POSSIBLE MATCH
SHAFT,STRAIGHT
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
3040-01-151-563487832-1641 ITEM 35 POSSIBLE MATCH
SHAFT,STRAIGHT
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
3040-01-151-563587832-1641 ITEM 36 POSSIBLE MATCH
SHAFT,STRAIGHT
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
3020-01-151-806987832-1641 ITEM 14 POSSIBLE MATCH
GEAR,SPUR
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
3020-01-152-023087832-1641 ITEM 29 POSSIBLE MATCH
GEAR,SPUR
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
3040-01-152-064587832-1641 ITEM 23 POSSIBLE MATCH
SHAFT,SHOULDERED
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
3020-01-152-087887832-1641 ITEM 15 POSSIBLE MATCH
GEAR,SPUR
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
3040-01-152-921787832-1641 ITEM 30 POSSIBLE MATCH
SHAFT,SHOULDERED
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
3020-01-163-2693709-4684912 ITEM 13 POSSIBLE MATCH
GEAR,SPUR
Possible match (shared part number)Naval Sea Systems Command
Cross-Reference Index
Part NumberManufacturer
709-4684912 ITEM 22 Naval Sea Systems Command (USA)
Reference documents
ReferenceMeaning
709-4684912 D/9 Drawing number reference only
Naval Sea Systems Command
709-4684912 ITE C/1 Advisory reference — outside the item-of-supply concept
U.S. Government activity
87832-1641 ITEM 22 3/2 Design control — primary reference
U.S. Government activity
87832-1641 D/9 Drawing number reference only
U.S. Government activity
Related Parts
3040-01-126-7378POSSIBLE MATCH
SHAFT,STRAIGHT
87832-1641 ITEM 34
3040-01-151-5634POSSIBLE MATCH
SHAFT,STRAIGHT
87832-1641 ITEM 35
3040-01-151-5635POSSIBLE MATCH
SHAFT,STRAIGHT
87832-1641 ITEM 36
3020-01-151-8069POSSIBLE MATCH
GEAR,SPUR
87832-1641 ITEM 14
3020-01-152-0230POSSIBLE MATCH
GEAR,SPUR
87832-1641 ITEM 29
3040-01-152-0645POSSIBLE MATCH
SHAFT,SHOULDERED
87832-1641 ITEM 23
3020-01-152-0878POSSIBLE MATCH
GEAR,SPUR
87832-1641 ITEM 15
3040-01-152-9217POSSIBLE MATCH
SHAFT,SHOULDERED
87832-1641 ITEM 30
3020-01-163-2693POSSIBLE MATCH
GEAR,SPUR
709-4684912 ITEM 13

Frequently Asked Questions

What is NSN 3040-01-120-0428?

NSN 3040-01-120-0428 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 3040-01-120-0428?

NSN 3040-01-120-0428 has 1 manufacturer part number on file: 709-4684912 ITEM 22 (Naval Sea Systems Command).

What NSN replaces 3040-01-120-0428?

9 possible matches (shared part number, not a government interchangeability claim): 3040-01-126-7378, 3040-01-151-5634, 3040-01-151-5635. Verify interchangeability with system specifications before substitution.

What are the specifications of 709-4684912 ITEM 22?

Key specifications for 709-4684912 ITEM 22: Surface Finish: 63.0 MICROINCHES; Step Quantity: 6; First End Diameter: 0.7470 INCHES MINIMUM AND 0.7490 INCHES MAXIMUM IN; First End Distance From Keyway Center to End: 0.716 INCHES NOMINAL IN. 12 specifications are documented in the U.S. Government catalog.

Is NSN 3040-01-120-0428 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.

What is the DEMIL code for NSN 3040-01-120-0428?

NSN 3040-01-120-0428 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.

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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