NSN 3040-01-498-3020 · NIIN 014983020 · Part number 596-7409761-39
Naval Sea Systems Command · FSC 3040 — Miscellaneous Power Transmission Equipment · FSG 30 — Mechanical Power Transmission Equipment · CAGE 53711
Government record, cited
NSN 3040-01-498-3020 — this item is cataloged by the U.S. Government under National Stock Number 3040-01-498-3020. Manufacturer of record part number: 596-7409761-39.
Also searched as3040-01-498-3020 ·
3040014983020 ·
NIIN 014983020 ·
01-498-3020 ·
FSC 3040 Miscellaneous Power Transmission Equipment · CAGE 53711 · 596-7409761-39 · B831-9110-39 · 7409761
First End External Thread Length: 2.120 INCHES NOMINAL IN
First End Style: EXTERNAL THREADED
Material Document and Classification: QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE
Identification
NSN: 3040-01-498-3020
NIIN: 014983020
FSC: 3040 — Miscellaneous Power Transmission Equipment
FSG: 30 — Mechanical Power Transmission Equipment
Primary part number: 596-7409761-39
Manufacturer: Naval Sea Systems Command
General Description
The Shaft,shouldered, cataloged under National Stock Number 3040-01-498-3020, 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 10 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government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
3040-01-498-3020
Primary Part Number
596-7409761-39
Item Name
Shaft,shouldered
FSC / FSG
3040 / 30 — Miscellaneous Power Transmission Equipment
Manufacturer
Naval Sea Systems Command
Status
ACTIVE
Step Quantity
2
First End Diameter
1.0000 INCHES NOMINAL IN
Second End Diameter
0.8800 INCHES NOMINAL IN
Largest Step Diameter
1.000 INCHES NOMINAL IN
First End External Thread Length
2.120 INCHES NOMINAL IN
First End Style
EXTERNAL THREADED
Material Document and Classification
QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE
End Similarity
NOT IDENTICAL
Second End Style
INTERNAL THREADED
Material
STEEL COMP 304
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.
3040-01-498-3047596-7409761-86POSSIBLE MATCH
SHAFT,SHOULDERED
Possible match (shared part number)Naval Sea Systems Command
3040-01-498-3629596-7409761-70POSSIBLE MATCH
SHAFT,SHOULDERED
Possible match (shared part number)Naval Sea Systems Command
3040-01-498-3663596-7409761-67POSSIBLE MATCH
SHAFT,SHOULDERED
Possible match (shared part number)Naval Sea Systems Command
3040-01-498-3931596-7409761-9POSSIBLE MATCH
SHAFT,SHOULDERED
Possible match (shared part number)Naval Sea Systems Command
3040-01-498-3976596-7409761-51POSSIBLE MATCH
SHAFT,SHOULDERED
Possible match (shared part number)Naval Sea Systems Command
5340-01-499-5320596-7409761-16POSSIBLE MATCH
BUMPER
Possible match (shared part number)Naval Sea Systems Command
NSN 3040-01-498-3020 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 3040-01-498-3020?
NSN 3040-01-498-3020 has 1 manufacturer part number on file: 596-7409761-39 (Naval Sea Systems Command).
What NSN replaces 3040-01-498-3020?
6 possible matches (shared part number, not a government interchangeability claim): 3040-01-498-3047, 3040-01-498-3629, 3040-01-498-3663. Verify interchangeability with system specifications before substitution.
What are the specifications of 596-7409761-39?
Key specifications for 596-7409761-39: Step Quantity: 2; First End Diameter: 1.0000 INCHES NOMINAL IN; Second End Diameter: 0.8800 INCHES NOMINAL IN; Largest Step Diameter: 1.000 INCHES NOMINAL IN. 10 specifications are documented in the U.S. Government catalog.
Is NSN 3040-01-498-3020 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.