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NSN 3040-01-103-7303Government record, cited
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Shaft, Shouldered3040-01-103-7303

NSN 3040-01-103-7303 · NIIN 011037303
FSC 3040 — Miscellaneous Power Transmission Equipment · FSG 30 — Mechanical Power Transmission Equipment
Government record, cited
Also searched as  3040-01-103-7303 · 3040011037303 · NIIN 011037303 · 01-103-7303 · FSC 3040 Miscellaneous Power Transmission Equipment · 845-4558718 ITEM 1 · 2642-343-03 ITEM 1 · 845-4558718 · 2642-343-03
Nearby stock numbers  ·
Features
  • Shaft,shouldered — FSC 3040
  • Second End External Thread Length: 0.547 INCHES NOMINAL IN
  • Step Quantity: 7
  • First End Diameter: 0.9997 INCHES NOMINAL IN
  • Second End Diameter: 0.7500 INCHES NOMINAL IN
  • Largest Step Diameter: 1.812 INCHES NOMINAL IN
  • First End Style: PLAIN
  • Material Document and Classification: MIL-S-1222,TYPE 1,SYMBOL B7 MIL SPEC SINGLE MATERIAL RESPONSE
Identification
  • NSN: 3040-01-103-7303
  • NIIN: 011037303
  • FSC: 3040 — Miscellaneous Power Transmission Equipment
  • FSG: 30 — Mechanical Power Transmission Equipment
General Description

The Shaft,shouldered, cataloged under National Stock Number 3040-01-103-7303, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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
NSN3040-01-103-7303
Item NameShaft,shouldered
FSC / FSG3040 / 30 — Miscellaneous Power Transmission Equipment
StatusACTIVE
Second End External Thread Length0.547 INCHES NOMINAL IN
Step Quantity7
First End Diameter0.9997 INCHES NOMINAL IN
Second End Diameter0.7500 INCHES NOMINAL IN
Largest Step Diameter1.812 INCHES NOMINAL IN
First End StylePLAIN
Material Document and ClassificationMIL-S-1222,TYPE 1,SYMBOL B7 MIL SPEC SINGLE MATERIAL RESPONSE
End SimilarityNOT IDENTICAL
Second End StyleEXTERNAL THREADED
MaterialSTEEL
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 5
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
3040-01-103-80622642-343-03 ITEM 8 POSSIBLE MATCH
SHAFT,SHOULDERED
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
3020-01-492-64682642-343-03 ITEM 3 POSSIBLE MATCH
GEAR,INTERNAL
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
3040-01-546-79307550477-264234303-1 POSSIBLE MATCH
SHAFT,SHOULDERED
Possible match (shared part number)Naval Sea Systems Command
5305-01-684-3683845-4558718-ITEM NO-30 POSSIBLE MATCH
SCREW,CAP,SOCKET HEAD
Possible match (shared part number)Naval Ship Systems Command
5305-01-684-3687845-4558718-ITEM NO-41 POSSIBLE MATCH
SCREW,CAP,SOCKET HEAD
Possible match (shared part number)Naval Ship Systems Command
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
ReferenceMeaning
845-4558718 ITEM 1 3/2 Design control — primary reference
U.S. Government activity
2642-343-03 ITEM 1 5/9 Secondary reference
U.S. Government activity
845-4558718 D/9 Drawing number reference only
U.S. Government activity
2642-343-03 D/9 Drawing number reference only
U.S. Government activity
Related Parts
3040-01-103-8062POSSIBLE MATCH
SHAFT,SHOULDERED
2642-343-03 ITEM 8
3020-01-492-6468POSSIBLE MATCH
GEAR,INTERNAL
2642-343-03 ITEM 3
3040-01-546-7930POSSIBLE MATCH
SHAFT,SHOULDERED
7550477-264234303-1
5305-01-684-3683POSSIBLE MATCH
SCREW,CAP,SOCKET HEAD
845-4558718-ITEM NO-30
5305-01-684-3687POSSIBLE MATCH
SCREW,CAP,SOCKET HEAD
845-4558718-ITEM NO-41

Frequently Asked Questions

What is NSN 3040-01-103-7303?

NSN 3040-01-103-7303 is a Shaft,shouldered, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.

What NSN replaces 3040-01-103-7303?

5 possible matches (shared part number, not a government interchangeability claim): 3040-01-103-8062, 3020-01-492-6468, 3040-01-546-7930. Verify interchangeability with system specifications before substitution.

What are the specifications of 3040-01-103-7303?

Key specifications for 3040-01-103-7303: Second End External Thread Length: 0.547 INCHES NOMINAL IN; Step Quantity: 7; First End Diameter: 0.9997 INCHES NOMINAL IN; Second End Diameter: 0.7500 INCHES NOMINAL IN. 10 specifications are documented in the U.S. Government catalog.

Is NSN 3040-01-103-7303 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 3040-01-103-7303?

NSN 3040-01-103-7303 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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