NSN 3020-01-348-8072 · NIIN 013488072 · Part number 6405258-42
Naval Sea Systems Command · FSC 3020 — Gears, Pulleys, Sprockets, and Transmission Chain · FSG 30 — Mechanical Power Transmission Equipment · CAGE 53711
Government record, cited
NSN 3020-01-348-8072 — this item is cataloged by the U.S. Government under National Stock Number 3020-01-348-8072. Manufacturer of record part number: 6405258-42.
Also searched as3020-01-348-8072 ·
3020013488072 ·
NIIN 013488072 ·
01-348-8072 ·
FSC 3020 Gears, Pulleys, Sprockets, and Transmission Chain · CAGE 53711 · 6405258-42 · 752-6405258-42 · 6405258
Nominal Distance Between Body Face and Protruding Hub End: 1.193 INCHES FIRST END IN
Teeth Type: STRAIGHT
Identification
NSN: 3020-01-348-8072
NIIN: 013488072
FSC: 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
FSG: 30 — Mechanical Power Transmission Equipment
Primary part number: 6405258-42
Manufacturer: Naval Sea Systems Command
General Description
The Gear,bevel, cataloged under National Stock Number 3020-01-348-8072, 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 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 7 items share a part number with this NSN in the catalog (possible match — not a government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
3020-01-348-8072
Primary Part Number
6405258-42
Item Name
Gear,bevel
FSC / FSG
3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain
Manufacturer
Naval Sea Systems Command
Status
ACTIVE
Hub Spline Quantity
10 FIRST END
Teeth Quantity
24
Body Style
PLAIN, SOLID
Pitch Angle
45.0000 DEGREES
Tooth Direction
LEFT
Nominal Distance Between Body Face and Protruding Hub End
1.193 INCHES FIRST END IN
Teeth Type
STRAIGHT
Style Designator
PROTRUDING HUB
Pitch Diameter
4.0000 INCHES NOMINAL IN
Hub Style Designator
EXTERNALLY SPLINED, STRAIGHT SPLINES FIRST END
Nominal Outside Diameter
4.219 INCHES IN
Hub Spline Nominal Major Diameter
1.375 INCHES FIRST END IN
Pressure Angle
20.0000 DEGREES
Material
STEEL OVERALL
Face Nominal Width
0.849 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 Items7
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
3020-01-348-8073752-6405258-38POSSIBLE MATCH
GEAR,HELICAL
Possible match (shared part number)Naval Sea Systems Command
3020-01-348-80746405258-40POSSIBLE MATCH
GEAR,HELICAL
Possible match (shared part number)Naval Sea Systems Command
3020-01-349-7418752-6405258-39POSSIBLE MATCH
GEAR,HELICAL
Possible match (shared part number)Naval Sea Systems Command
3040-01-349-78916405258-41POSSIBLE MATCH
GEARSHAFT,BEVEL
Possible match (shared part number)Naval Sea Systems Command
2010-01-361-6012752-6405258-43POSSIBLE MATCH
SLEEVE,PROPULSION SHAFT,SHIP
Possible match (shared part number)Naval Sea Systems Command
3020-01-378-60366405258-196POSSIBLE MATCH
GEAR,BEVEL
Possible match (shared part number)Naval Sea Systems Command
3040-01-383-56966405258-201POSSIBLE MATCH
SHAFT,SHOULDERED
Possible match (shared part number)Naval Sea Systems Command
C/1Advisory reference — outside the item-of-supply concept
Naval Sea Systems Command
6405258
D/9Drawing number reference only
Naval Sea Systems Command
Related Parts
3020-01-348-8073POSSIBLE MATCH
GEAR,HELICAL
752-6405258-38
3020-01-348-8074POSSIBLE MATCH
GEAR,HELICAL
6405258-40
3020-01-349-7418POSSIBLE MATCH
GEAR,HELICAL
752-6405258-39
3040-01-349-7891POSSIBLE MATCH
GEARSHAFT,BEVEL
6405258-41
2010-01-361-6012POSSIBLE MATCH
SLEEVE,PROPULSION SHAFT,SHIP
752-6405258-43
3020-01-378-6036POSSIBLE MATCH
GEAR,BEVEL
6405258-196
3040-01-383-5696POSSIBLE MATCH
SHAFT,SHOULDERED
6405258-201
Frequently Asked Questions
What is NSN 3020-01-348-8072?
NSN 3020-01-348-8072 is a Gear,bevel, 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 3020-01-348-8072?
NSN 3020-01-348-8072 has 1 manufacturer part number on file: 6405258-42 (Naval Sea Systems Command).
What NSN replaces 3020-01-348-8072?
7 possible matches (shared part number, not a government interchangeability claim): 3020-01-348-8073, 3020-01-348-8074, 3020-01-349-7418. Verify interchangeability with system specifications before substitution.
What are the specifications of 6405258-42?
Key specifications for 6405258-42: Hub Spline Quantity: 10 FIRST END; Teeth Quantity: 24; Body Style: PLAIN, SOLID; Pitch Angle: 45.0000 DEGREES. 15 specifications are documented in the U.S. Government catalog.
Is NSN 3020-01-348-8072 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.