NSN 3040-01-497-0539 · NIIN 014970539 · Part number 754-7066812-58
Naval Sea Systems Command · FSC 3040 — Miscellaneous Power Transmission Equipment · FSG 30 — Mechanical Power Transmission Equipment · CAGE 53711
Government record, cited
NSN 3040-01-497-0539 — this item is cataloged by the U.S. Government under National Stock Number 3040-01-497-0539. Manufacturer of record part number: 754-7066812-58.
Also searched as3040-01-497-0539 ·
3040014970539 ·
NIIN 014970539 ·
01-497-0539 ·
FSC 3040 Miscellaneous Power Transmission Equipment · CAGE 53711 · 754-7066812-58 · H553-1502-58 · 754-7066812
Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball: 8.500 INCHES NOMINAL SECOND END IN
Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball: 7.875 INCHES NOMINAL FIRST END IN
End Hole/ball Diameter: 3.004 INCHES NOMINAL ALL ENDS IN
Style Designator: RAISED FACE PIVOT HOLE, CLEVIS BOTH ENDS
Fulcrum Bore Shape: SPLINED
Bore Diameter: 5.997 INCHES MINIMUM AND 6.000 INCHES MAXIMUM IN
Material: NICKEL ALLOY
Identification
NSN: 3040-01-497-0539
NIIN: 014970539
FSC: 3040 — Miscellaneous Power Transmission Equipment
FSG: 30 — Mechanical Power Transmission Equipment
Primary part number: 754-7066812-58
Manufacturer: Naval Sea Systems Command
General Description
The Bell Crank, cataloged under National Stock Number 3040-01-497-0539, 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 7 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government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
3040-01-497-0539
Primary Part Number
754-7066812-58
Item Name
Bell Crank
FSC / FSG
3040 / 30 — Miscellaneous Power Transmission Equipment
Manufacturer
Naval Sea Systems Command
Status
ACTIVE
Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball
8.500 INCHES NOMINAL SECOND END IN
Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball
7.875 INCHES NOMINAL FIRST END IN
End Hole/ball Diameter
3.004 INCHES NOMINAL ALL ENDS IN
Style Designator
RAISED FACE PIVOT HOLE, CLEVIS BOTH ENDS
Fulcrum Bore Shape
SPLINED
Bore Diameter
5.997 INCHES MINIMUM AND 6.000 INCHES MAXIMUM IN
Material
NICKEL ALLOY
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.
3040-01-497-0625754-7066812-4POSSIBLE MATCH
SHAFT,SHOULDERED
Possible match (shared part number)Naval Sea Systems Command
5365-01-497-1147754-7066812-51POSSIBLE MATCH
PLUG,MACHINE THREAD
Possible match (shared part number)Naval Sea Systems Command
3120-01-497-1949754-7066812-25POSSIBLE MATCH
BEARING,SLEEVE
Possible match (shared part number)Naval Sea Systems Command
3120-01-497-1967754-7066812-29POSSIBLE MATCH
BEARING,SLEEVE
Possible match (shared part number)Naval Sea Systems Command
3120-01-497-1972754-7066812-38POSSIBLE MATCH
BEARING,SLEEVE
Possible match (shared part number)Naval Sea Systems Command
2040-01-497-3443754-7066812-18POSSIBLE MATCH
WEAR PLATE,DOOR,MARINE
Possible match (shared part number)Naval Sea Systems Command
NSN 3040-01-497-0539 is a Bell Crank, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
What part numbers are listed for NSN 3040-01-497-0539?
NSN 3040-01-497-0539 has 1 manufacturer part number on file: 754-7066812-58 (Naval Sea Systems Command).
What NSN replaces 3040-01-497-0539?
6 possible matches (shared part number, not a government interchangeability claim): 3040-01-497-0625, 5365-01-497-1147, 3120-01-497-1949. Verify interchangeability with system specifications before substitution.
What are the specifications of 754-7066812-58?
Key specifications for 754-7066812-58: Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball: 8.500 INCHES NOMINAL SECOND END IN; Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball: 7.875 INCHES NOMINAL FIRST END IN; End Hole/ball Diameter: 3.004 INCHES NOMINAL ALL ENDS IN; Style Designator: RAISED FACE PIVOT HOLE, CLEVIS BOTH ENDS. 7 specifications are documented in the U.S. Government catalog.
Is NSN 3040-01-497-0539 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.