NSN 3020-01-409-1251 · NIIN 014091251 · Part number 561-6404325-76
Naval Sea Systems Command · FSC 3020 — Gears, Pulleys, Sprockets, and Transmission Chain · FSG 30 — Mechanical Power Transmission Equipment · CAGE 53711
Government record, cited
NSN 3020-01-409-1251 — this item is cataloged by the U.S. Government under National Stock Number 3020-01-409-1251. Manufacturer of record part number: 561-6404325-76.
Also searched as3020-01-409-1251 ·
3020014091251 ·
NIIN 014091251 ·
01-409-1251 ·
FSC 3020 Gears, Pulleys, Sprockets, and Transmission Chain · CAGE 53711 · 561-6404325-76 · 24GCF-160-E · 6404325 · 211061843
Link Inboard Width Between Jacket: 0.2080 INCHES IN
Link Jacket Height: 0.1120 INCHES IN
Link Style: SINGLE DRIVE LINK
Link Nominal Width: 0.2880 INCHES IN
Link Pin Nominal Diameter: 0.0650 INCHES IN
Effective Length: 1.7453 FEET NOMINAL FT
Nominal Pitch Distance: 0.1309 INCHES IN
Identification
NSN: 3020-01-409-1251
NIIN: 014091251
FSC: 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
FSG: 30 — Mechanical Power Transmission Equipment
Primary part number: 561-6404325-76
Manufacturer: Naval Sea Systems Command
General Description
The Chain,cable, cataloged under National Stock Number 3020-01-409-1251, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 9 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 8 items share a part number with this NSN in the catalog (possible match — not a government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
3020-01-409-1251
Primary Part Number
561-6404325-76
Item Name
Chain,cable
FSC / FSG
3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain
Manufacturer
Naval Sea Systems Command
Status
ACTIVE
Link Inboard Width Between Jacket
0.2080 INCHES IN
Link Jacket Height
0.1120 INCHES IN
Link Style
SINGLE DRIVE LINK
Link Nominal Width
0.2880 INCHES IN
Link Pin Nominal Diameter
0.0650 INCHES IN
Effective Length
1.7453 FEET NOMINAL FT
Nominal Pitch Distance
0.1309 INCHES IN
Link Row Quantity
1
Material
STEEL CORROSION RESISTING
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 Items8
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
3020-01-409-1258211064942POSSIBLE MATCH
CHAIN,CABLE
Possible match (shared part number)Naval Sea Systems Command
2040-01-409-1580561-6404325-11POSSIBLE MATCH
SHAFT,RUDDER
Possible match (shared part number)Naval Sea Systems Command
2030-01-409-1584211060310POSSIBLE MATCH
STEERING WHEEL
Possible match (shared part number)Naval Sea Systems Command
3120-01-411-6504561-6404325-58POSSIBLE MATCH
BEARING,SLEEVE
Possible match (shared part number)Sargent Aerospace & Defense, Llc Dba Kahr Bearings
4730-01-422-9457561-6404325-165POSSIBLE MATCH
ADAPTER,STRAIGHT,FLANGE TO FLANG
Possible match (shared part number)Naval Sea Systems Command
2010-01-423-2431167-6404610-94POSSIBLE MATCH
ADAPTER,STERRING
Possible match (shared part number)Naval Sea Systems Command
2010-01-423-2437211060296POSSIBLE MATCH
HOUSING COLUMN STEERING
Possible match (shared part number)Naval Sea Systems Command
2010-01-423-2442211094505POSSIBLE MATCH
HOUSING,COLU STEERING
Possible match (shared part number)Naval Sea Systems Command
NSN 3020-01-409-1251 is a Chain,cable, manufactured by Naval Sea Systems Command, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
What part numbers are listed for NSN 3020-01-409-1251?
NSN 3020-01-409-1251 has 2 manufacturer part numbers on file: 561-6404325-76 (Naval Sea Systems Command), 211061843 (Naval Sea Systems Command).
What NSN replaces 3020-01-409-1251?
8 possible matches (shared part number, not a government interchangeability claim): 3020-01-409-1258, 2040-01-409-1580, 2030-01-409-1584. Verify interchangeability with system specifications before substitution.
What are the specifications of 561-6404325-76?
Key specifications for 561-6404325-76: Link Inboard Width Between Jacket: 0.2080 INCHES IN; Link Jacket Height: 0.1120 INCHES IN; Link Style: SINGLE DRIVE LINK; Link Nominal Width: 0.2880 INCHES IN. 9 specifications are documented in the U.S. Government catalog.
Is NSN 3020-01-409-1251 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.