NSN 3020-01-476-1941 · NIIN 014761941 · Part number 721-7070284-16
Naval Sea Systems Command · FSC 3020 — Gears, Pulleys, Sprockets, and Transmission Chain · FSG 30 — Mechanical Power Transmission Equipment · CAGE 53711
Government record, cited
NSN 3020-01-476-1941 — this item is cataloged by the U.S. Government under National Stock Number 3020-01-476-1941. Manufacturer of record part number: 721-7070284-16.
Also searched as3020-01-476-1941 ·
3020014761941 ·
NIIN 014761941 ·
01-476-1941 ·
FSC 3020 Gears, Pulleys, Sprockets, and Transmission Chain · CAGE 53711 · 721-7070284-16 · H864-1401-16 · 7070284
Material Document and Classification: ASTM A564 TY 630 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Tooth Form: STANDARD
Identification
NSN: 3020-01-476-1941
NIIN: 014761941
FSC: 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
FSG: 30 — Mechanical Power Transmission Equipment
Primary part number: 721-7070284-16
Manufacturer: Naval Sea Systems Command
General Description
The Gear Rack, cataloged under National Stock Number 3020-01-476-1941, 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 11 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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
3020-01-476-1941
Primary Part Number
721-7070284-16
Item Name
Gear Rack
FSC / FSG
3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain
Manufacturer
Naval Sea Systems Command
Status
ACTIVE
Teeth Quantity
9
Pitch Height
0.5610 INCHES NOMINAL IN
Teeth Type
SPUR
Nominal Overall Length
4.688 INCHES IN
Style Designator
ROUND, BOSS MOUNTED
Material Document and Classification
ASTM A564 TY 630 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Tooth Form
STANDARD
Nominal Outside Diameter
1.1755 INCHES IN
Pressure Angle
20.0000 DEGREES
Material
STEEL COMP 630 OVERALL
Nominal Thickness
0.661 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 Items5
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
3040-01-476-1994721-7070284-48POSSIBLE MATCH
CAM,BARREL
Possible match (shared part number)Naval Sea Systems Command
4810-01-476-2491H8641401-A3POSSIBLE MATCH
ACTUATOR,HYDRAULIC-PNEUMATIC,ROT
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4820-01-477-6031H864-1401-A1POSSIBLE MATCH
VALVE ASSEMBLY
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4820-01-477-6035H864-1401-4POSSIBLE MATCH
STEM,FLUID VALVE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4820-01-477-6056H864-1401 PIECE 3,7POSSIBLE MATCH
PARTS KIT,BALL VALVE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
NSN 3020-01-476-1941 is a Gear Rack, 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 3020-01-476-1941?
NSN 3020-01-476-1941 has 1 manufacturer part number on file: 721-7070284-16 (Naval Sea Systems Command).
What NSN replaces 3020-01-476-1941?
5 possible matches (shared part number, not a government interchangeability claim): 3040-01-476-1994, 4810-01-476-2491, 4820-01-477-6031. Verify interchangeability with system specifications before substitution.
What are the specifications of 721-7070284-16?
Key specifications for 721-7070284-16: Teeth Quantity: 9; Pitch Height: 0.5610 INCHES NOMINAL IN; Teeth Type: SPUR; Nominal Overall Length: 4.688 INCHES IN. 11 specifications are documented in the U.S. Government catalog.
Is NSN 3020-01-476-1941 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.