NSN 3020-01-397-5781 · NIIN 013975781 · Part number 211073389
Naval Sea Systems Command · FSC 3020 — Gears, Pulleys, Sprockets, and Transmission Chain · FSG 30 — Mechanical Power Transmission Equipment · CAGE 53711
Government record, cited
NSN 3020-01-397-5781 — this item is cataloged by the U.S. Government under National Stock Number 3020-01-397-5781. Manufacturer of record part number: 211073389.
Also searched as3020-01-397-5781 ·
3020013975781 ·
NIIN 013975781 ·
01-397-5781 ·
FSC 3020 Gears, Pulleys, Sprockets, and Transmission Chain · CAGE 53711 · 211073389 · 167-6404556 FIND 42 · 167-6404556
Nominal Distance Between Body Face and Protruding Hub End: 0.216 INCHES FIRST END IN
Identification
NSN: 3020-01-397-5781
NIIN: 013975781
FSC: 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
FSG: 30 — Mechanical Power Transmission Equipment
Primary part number: 211073389
Manufacturer: Naval Sea Systems Command
General Description
The Gear,spur, cataloged under National Stock Number 3020-01-397-5781, 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 15 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 10 items share a part number with this NSN in the catalog (possible match — not a government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
3020-01-397-5781
Primary Part Number
211073389
Item Name
Gear,spur
FSC / FSG
3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain
Manufacturer
Naval Sea Systems Command
Status
ACTIVE
Keyway Nominal Width
0.189 INCHES BOTH ENDS IN
Bore Nominal Diameter
1.125 INCHES BOTH ENDS IN
Hub Nominal Diameter
1.750 INCHES FIRST END IN
Teeth Quantity
25
Body Style
PLAIN, SOLID
Bore Style
W/ KEYWAY BOTH ENDS
Nominal Distance Between Body Face and Protruding Hub End
0.216 INCHES FIRST END IN
Style Designator
PROTRUDING HUB
Pitch Diameter
2.5000 INCHES NOMINAL IN
Hub Style Designator
PLAIN FIRST END
Nominal Outside Diameter
2.658 INCHES IN
Nominal Distance From Bore Center to Keyway Bottom
0.655 INCHES BOTH ENDS IN
Pressure Angle
20.0000 DEGREES
Material
ALUMINUM ALLOY OVERALL
Face Nominal Width
1.000 INCHES IN
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 Items10
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
3020-01-397-5782167-6404556 FIND 40POSSIBLE MATCH
GEAR SECTOR CLUSTER
Possible match (shared part number)Naval Sea Systems Command
3040-01-397-5783167-6404556 FIND 49POSSIBLE MATCH
SHAFT,SHOULDERED
Possible match (shared part number)Naval Sea Systems Command
3020-01-397-5784167-6404556 FIND 44POSSIBLE MATCH
GEAR CLUSTER
Possible match (shared part number)Naval Sea Systems Command
3020-01-397-5785167-6404556 FIND 102POSSIBLE MATCH
GEAR,SPUR
Possible match (shared part number)Naval Sea Systems Command
3040-01-397-5788167-6404556 FIND 64POSSIBLE MATCH
SHAFT,SHOULDERED
Possible match (shared part number)Naval Sea Systems Command
5365-01-532-0319167-6404556-139POSSIBLE MATCH
SPACER,SLEEVE
Possible match (shared part number)Naval Sea Systems Command
5365-01-532-0347167-6404556-76POSSIBLE MATCH
SPACER,SLEEVE
Possible match (shared part number)Naval Sea Systems Command
5365-01-532-0598167-6404556-144POSSIBLE MATCH
SPACER,SLEEVE
Possible match (shared part number)Naval Sea Systems Command
5365-01-532-0604167-6404556-122POSSIBLE MATCH
SPACER,SLEEVE
Possible match (shared part number)Naval Sea Systems Command
5365-01-532-0612167-6404556-136POSSIBLE MATCH
SPACER,SLEEVE
Possible match (shared part number)Naval Sea Systems Command
NSN 3020-01-397-5781 is a Gear,spur, 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 3020-01-397-5781?
NSN 3020-01-397-5781 has 2 manufacturer part numbers on file: 211073389 (Naval Sea Systems Command), 167-6404556 FIND 42 (Naval Sea Systems Command).
What NSN replaces 3020-01-397-5781?
10 possible matches (shared part number, not a government interchangeability claim): 3020-01-397-5782, 3040-01-397-5783, 3020-01-397-5784. Verify interchangeability with system specifications before substitution.
What are the specifications of 211073389?
Key specifications for 211073389: Keyway Nominal Width: 0.189 INCHES BOTH ENDS IN; Bore Nominal Diameter: 1.125 INCHES BOTH ENDS IN; Hub Nominal Diameter: 1.750 INCHES FIRST END IN; Teeth Quantity: 25. 15 specifications are documented in the U.S. Government catalog.
Is NSN 3020-01-397-5781 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.