NSN 3040-01-441-5040 · NIIN 014415040 · Part number 581-6405750 FIND AHWA 9
Naval Sea Systems Command · FSC 3040 — Miscellaneous Power Transmission Equipment · FSG 30 — Mechanical Power Transmission Equipment · CAGE 53711
Government record, cited
NSN 3040-01-441-5040 — this item is cataloged by the U.S. Government under National Stock Number 3040-01-441-5040. Manufacturer of record part number: 581-6405750 FIND AHWA 9.
First End Width Across Flats: 1.000 INCHES NOMINAL IN
First End Step Length: 22.920 INCHES NOMINAL IN
First End Style: SQUARE (ROUND CORNERS)
End Similarity: IDENTICAL
Material: NICKEL
2 manufacturer part numbers on file
Manufacturer of record: Naval Sea Systems Command
Identification
NSN: 3040-01-441-5040
NIIN: 014415040
FSC: 3040 — Miscellaneous Power Transmission Equipment
FSG: 30 — Mechanical Power Transmission Equipment
Primary part number: 581-6405750 FIND AHWA 9
Manufacturer: Naval Sea Systems Command
General Description
The Shaft,straight, cataloged under National Stock Number 3040-01-441-5040, 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 5 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 9 items share a part number with this NSN in the catalog (possible match — not a government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
Parameter
Value
NSN
3040-01-441-5040
Primary Part Number
581-6405750 FIND AHWA 9
Item Name
Shaft,straight
FSC / FSG
3040 / 30 — Miscellaneous Power Transmission Equipment
Manufacturer
Naval Sea Systems Command
Status
ACTIVE
First End Width Across Flats
1.000 INCHES NOMINAL IN
First End Step Length
22.920 INCHES NOMINAL IN
First End Style
SQUARE (ROUND CORNERS)
End Similarity
IDENTICAL
Material
NICKEL
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 Items9
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
3010-01-442-1727218027408POSSIBLE MATCH
UNIVERSAL JOINT,NONVEHICULAR
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
3010-01-442-1946218016495APOSSIBLE MATCH
UNIVERSAL JOINT,NONVEHICULAR
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
3010-01-442-1951211058437POSSIBLE MATCH
YOKE,UNIVERSAL JOINT,NONVEHICULA
Possible match (shared part number)Naval Sea Systems Command
3010-01-442-1954211058438POSSIBLE MATCH
YOKE,UNIVERSAL JOINT,NONVEHICULA
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
3010-01-442-1955218027409POSSIBLE MATCH
UNIVERSAL JOINT,NONVEHICULAR
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
3040-01-442-20026111403-A19POSSIBLE MATCH
BRAKE BAND AND LINING
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
3020-01-442-2006211070519POSSIBLE MATCH
GEAR,WORM WHEEL
Possible match (shared part number)Naval Sea Systems Command
4820-01-443-75176111403-2POSSIBLE MATCH
FLANGE,GLAND,VALVE
Possible match (shared part number)Naval Sea Systems Command
3040-01-444-3989C611-1403 FIND AHWA 8POSSIBLE MATCH
SHAFT,STRAIGHT
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
Huntington Ingalls Inc Div Newport News Shipbuilding
581-6405750 AHWA FIND 9
5/9Secondary reference
Naval Sea Systems Command
C611-1403-AHWA-9
3/2Design control — primary reference
U.S. Government activity
6405750
D/9Drawing number reference only
Naval Sea Systems Command
Related Parts
3010-01-442-1727POSSIBLE MATCH
UNIVERSAL JOINT,NONVEHICULAR
218027408
3010-01-442-1946POSSIBLE MATCH
UNIVERSAL JOINT,NONVEHICULAR
218016495A
3010-01-442-1951POSSIBLE MATCH
YOKE,UNIVERSAL JOINT,NONVEHICULA
211058437
3010-01-442-1954POSSIBLE MATCH
YOKE,UNIVERSAL JOINT,NONVEHICULA
211058438
3010-01-442-1955POSSIBLE MATCH
UNIVERSAL JOINT,NONVEHICULAR
218027409
3040-01-442-2002POSSIBLE MATCH
BRAKE BAND AND LINING
6111403-A19
3020-01-442-2006POSSIBLE MATCH
GEAR,WORM WHEEL
211070519
4820-01-443-7517POSSIBLE MATCH
FLANGE,GLAND,VALVE
6111403-2
3040-01-444-3989POSSIBLE MATCH
SHAFT,STRAIGHT
C611-1403 FIND AHWA 8
Frequently Asked Questions
What is NSN 3040-01-441-5040?
NSN 3040-01-441-5040 is a Shaft,straight, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
What part numbers are listed for NSN 3040-01-441-5040?
NSN 3040-01-441-5040 has 2 manufacturer part numbers on file: 581-6405750 FIND AHWA 9 (Naval Sea Systems Command), 6111403-9 (Naval Sea Systems Command).
What NSN replaces 3040-01-441-5040?
9 possible matches (shared part number, not a government interchangeability claim): 3010-01-442-1727, 3010-01-442-1946, 3010-01-442-1951. Verify interchangeability with system specifications before substitution.
What are the specifications of 581-6405750 FIND AHWA 9?
Key specifications for 581-6405750 FIND AHWA 9: First End Width Across Flats: 1.000 INCHES NOMINAL IN; First End Step Length: 22.920 INCHES NOMINAL IN; First End Style: SQUARE (ROUND CORNERS); Overall Length: 45.840 INCHES NOMINAL IN. 5 specifications are documented in the U.S. Government catalog.
Is NSN 3040-01-441-5040 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.