FSC: 3040 — Miscellaneous Power Transmission Equipment
FSG: 30 — Mechanical Power Transmission Equipment
General Description
The Hub,body, cataloged under National Stock Number 3040-01-221-8955, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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
3040-01-221-8955
Item Name
Hub,body
FSC / FSG
3040 / 30 — Miscellaneous Power Transmission Equipment
Status
ACTIVE
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 Items4
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
3040-01-222-4599SSN593-520-1862474 PIECE 6POSSIBLE MATCH
GEARSHAFT,HELICAL
Possible match (shared part number)Portsmouth Naval Shipyard
3020-01-222-4630SSN593-520-1862474 PIECE 1POSSIBLE MATCH
GEAR,BEVEL
Possible match (shared part number)Portsmouth Naval Shipyard
3020-01-222-4634SSN593-520-1862474 PIECE 4POSSIBLE MATCH
GEAR,HELICAL
Possible match (shared part number)Portsmouth Naval Shipyard
3040-01-222-5488SSN593-520-1862474 PIECE 7POSSIBLE MATCH
GEARSHAFT,HELICAL
Possible match (shared part number)Portsmouth Naval Shipyard
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
SSN593-520-1862474 PIECE 3
3/2Design control — primary reference
U.S. Government activity
SSN593-520-1862474
D/9Drawing number reference only
U.S. Government activity
Related Parts
3040-01-222-4599POSSIBLE MATCH
GEARSHAFT,HELICAL
SSN593-520-1862474 PIECE 6
3020-01-222-4630POSSIBLE MATCH
GEAR,BEVEL
SSN593-520-1862474 PIECE 1
3020-01-222-4634POSSIBLE MATCH
GEAR,HELICAL
SSN593-520-1862474 PIECE 4
3040-01-222-5488POSSIBLE MATCH
GEARSHAFT,HELICAL
SSN593-520-1862474 PIECE 7
Frequently Asked Questions
What is NSN 3040-01-221-8955?
NSN 3040-01-221-8955 is a Hub,body, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
What NSN replaces 3040-01-221-8955?
4 possible matches (shared part number, not a government interchangeability claim): 3040-01-222-4599, 3020-01-222-4630, 3020-01-222-4634. Verify interchangeability with system specifications before substitution.
What are the specifications of 3040-01-221-8955?
Key specifications for 3040-01-221-8955: Special Features: OUTSIDE SHOULDER DIAMETER: 9.750IN;SECURING HOLE QUANTITY: 6 IN; End Item Identification: CAPSTAN HYD SPD MAX PULL 3000@40FPM. 0 specifications are documented in the U.S. Government catalog.
Is NSN 3040-01-221-8955 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.