NSN 3020-01-428-4445 · NIIN 014284445 · Part number 167-6404625 FIND 77
Naval Sea Systems Command · FSC 3020 — Gears, Pulleys, Sprockets, and Transmission Chain · FSG 30 — Mechanical Power Transmission Equipment · CAGE 53711
Government record, cited
NSN 3020-01-428-4445 — this item is cataloged by the U.S. Government under National Stock Number 3020-01-428-4445. Manufacturer of record part number: 167-6404625 FIND 77.
Material Document and Classification: QQ-N-281, COND HF FED SPEC SINGLE MATERIAL RESPONSE
Material: NICKEL ALLOY
1 manufacturer part number on file
Manufacturer of record: Naval Sea Systems Command
Identification
NSN: 3020-01-428-4445
NIIN: 014284445
FSC: 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
FSG: 30 — Mechanical Power Transmission Equipment
Primary part number: 167-6404625 FIND 77
Manufacturer: Naval Sea Systems Command
General Description
The Ratchet Wheel, cataloged under National Stock Number 3020-01-428-4445, 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 5 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 8 items share a part number with this NSN in the catalog (possible match — not a government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
3020-01-428-4445
Primary Part Number
167-6404625 FIND 77
Item Name
Ratchet Wheel
FSC / FSG
3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain
Manufacturer
Naval Sea Systems Command
Status
ACTIVE
Bore Nominal Diameter
1.906 INCHES IN
Teeth Quantity
9
Outside Diameter
6.500 INCHES NOMINAL IN
Material Document and Classification
QQ-N-281, COND HF FED SPEC SINGLE MATERIAL RESPONSE
Material
NICKEL ALLOY
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.
3040-01-428-4446167-6404625 FIND 100POSSIBLE MATCH
PAWL
Possible match (shared part number)Naval Sea Systems Command
3040-01-428-4447167-6404625 FIND 107POSSIBLE MATCH
SHAFT,STRAIGHT
Possible match (shared part number)Naval Sea Systems Command
3020-01-428-4449167-6404625 FIND 78POSSIBLE MATCH
RATCHET WHEEL
Possible match (shared part number)Naval Sea Systems Command
3020-01-428-6167167-6404625 FIND 32.33POSSIBLE MATCH
GEAR SET,SECTOR,WORM WHEEL
Possible match (shared part number)Naval Sea Systems Command
3120-01-430-4725POSSIBLE MATCH
BEARING,SLEEVE
Possible match (shared part number)
3020-01-473-7421167-6404625 FIND 164POSSIBLE MATCH
GEAR,WORM
Possible match (shared part number)Naval Sea Systems Command
3020-01-473-7424167-6404625 FIND 171POSSIBLE MATCH
GEAR,WORM
Possible match (shared part number)Naval Sea Systems Command
3120-01-484-2896167-6404625 FIND 173POSSIBLE MATCH
BEARING,PLAIN,SPHERICAL
Possible match (shared part number)Naval Sea Systems Command
Huntington Ingalls Inc Div Newport News Shipbuilding
6404625
D/9Drawing number reference only
Naval Sea Systems Command
Related Parts
3040-01-428-4446POSSIBLE MATCH
PAWL
167-6404625 FIND 100
3040-01-428-4447POSSIBLE MATCH
SHAFT,STRAIGHT
167-6404625 FIND 107
3020-01-428-4449POSSIBLE MATCH
RATCHET WHEEL
167-6404625 FIND 78
3020-01-428-6167POSSIBLE MATCH
GEAR SET,SECTOR,WORM WHEEL
167-6404625 FIND 32.33
3120-01-430-4725POSSIBLE MATCH
BEARING,SLEEVE
3020-01-473-7421POSSIBLE MATCH
GEAR,WORM
167-6404625 FIND 164
3020-01-473-7424POSSIBLE MATCH
GEAR,WORM
167-6404625 FIND 171
3120-01-484-2896POSSIBLE MATCH
BEARING,PLAIN,SPHERICAL
167-6404625 FIND 173
Frequently Asked Questions
What is NSN 3020-01-428-4445?
NSN 3020-01-428-4445 is a Ratchet Wheel, 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 3020-01-428-4445?
NSN 3020-01-428-4445 has 1 manufacturer part number on file: 167-6404625 FIND 77 (Naval Sea Systems Command).
What NSN replaces 3020-01-428-4445?
8 possible matches (shared part number, not a government interchangeability claim): 3040-01-428-4446, 3040-01-428-4447, 3020-01-428-4449. Verify interchangeability with system specifications before substitution.
What are the specifications of 167-6404625 FIND 77?
Key specifications for 167-6404625 FIND 77: Bore Nominal Diameter: 1.906 INCHES IN; Teeth Quantity: 9; Outside Diameter: 6.500 INCHES NOMINAL IN; Material Document and Classification: QQ-N-281, COND HF FED SPEC SINGLE MATERIAL RESPONSE. 5 specifications are documented in the U.S. Government catalog.
Is NSN 3020-01-428-4445 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.