PartsTable TECHNICAL DATA SHEET

NSN 3020-01-377-7532Government record, cited

Gear Cluster3020-01-377-7532

NSN 3020-01-377-7532 · NIIN 013777532 · Part number 211041101

Naval Sea Systems Command · FSC 3020 — Gears, Pulleys, Sprockets, and Transmission Chain · FSG 30 — Mechanical Power Transmission Equipment · CAGE 53711

Government record, cited

NSN 3020-01-377-7532 — this item is cataloged by the U.S. Government under National Stock Number 3020-01-377-7532. Manufacturer of record part number: 211041101.

Also searched as 3020-01-377-7532 · 3020013777532 · NIIN 013777532 · 01-377-7532 · FSC 3020 Gears, Pulleys, Sprockets, and Transmission Chain · CAGE 53711 · 211041101 · 801-6406709 FIND 6 · 6406709

Nearby stock numbers ← 3020-01-377-7455 Gear, Internal · 3020-01-377-7533 Gear, Internal →

Features

Gear Cluster — FSC 3020
Design Type: SPUR ALL GEARS
Nominal Overall Length: 2.590 INCHES IN
Nominal Outside Diameter: 3.567 INCHES SECOND GEAR IN
Nominal Outside Diameter: 4.167 INCHES FIRST GEAR IN
Material: STEEL OVERALL
Construction: SOLID
2 manufacturer part numbers on file

Identification

NSN: 3020-01-377-7532
NIIN: 013777532
FSC: 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
FSG: 30 — Mechanical Power Transmission Equipment
Primary part number: 211041101
Manufacturer: Naval Sea Systems Command

General Description

The Gear Cluster, cataloged under National Stock Number 3020-01-377-7532, 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 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 12 items share a part number with this NSN in the catalog (possible match — not a government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	3020-01-377-7532
Primary Part Number	211041101
Item Name	Gear Cluster
FSC / FSG	3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain
Manufacturer	Naval Sea Systems Command
Status	ACTIVE
Design Type	SPUR ALL GEARS
Nominal Overall Length	2.590 INCHES IN
Nominal Outside Diameter	3.567 INCHES SECOND GEAR IN
Nominal Outside Diameter	4.167 INCHES FIRST GEAR IN
Material	STEEL OVERALL
Construction	SOLID

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 Items 12

Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.

3020-01-377-7533211041102 POSSIBLE MATCH

GEAR,INTERNAL

Possible match (shared part number)Naval Sea Systems Command

3040-01-377-9309801-6406709 FIND 27 POSSIBLE MATCH

SHAFT,SHOULDERED

Possible match (shared part number)Naval Sea Systems Command

3040-01-378-5015211041080 POSSIBLE MATCH

SHAFT,SHOULDERED

Possible match (shared part number)Naval Sea Systems Command

3020-01-379-3097211071415 POSSIBLE MATCH

GEAR,INTERNAL

Possible match (shared part number)Naval Sea Systems Command

3040-01-383-5253211052706 POSSIBLE MATCH

SHAFT,SHOULDERED

Possible match (shared part number)Naval Sea Systems Command

3020-01-383-5531211071414 POSSIBLE MATCH

GEAR,INTERNAL

Possible match (shared part number)Naval Sea Systems Command

3020-01-416-33126406709-78 POSSIBLE MATCH

GEAR,INTERNAL

Possible match (shared part number)Naval Sea Systems Command

4820-01-416-6864801-6406709-AY90 POSSIBLE MATCH

GEAR OPERATOR,VALVE

Possible match (shared part number)Naval Sea Systems Command

3020-01-421-5277801-6406709 FIND 81 POSSIBLE MATCH

GEAR,INTERNAL

Possible match (shared part number)Naval Sea Systems Command

4820-01-422-2300211041091 POSSIBLE MATCH

VALVE RELEASE BUTTON

Possible match (shared part number)Naval Sea Systems Command

Cross-Reference Index

Part Number	Manufacturer
211041101 PRIMARY	Naval Sea Systems Command (USA)
801-6406709 FIND 6	Naval Sea Systems Command (USA)

Reference documents

Reference	Meaning
6406709	D/9 Drawing number reference only Naval Sea Systems Command

Related Parts

3020-01-377-7533POSSIBLE MATCH

GEAR,INTERNAL

211041102

3040-01-377-9309POSSIBLE MATCH

SHAFT,SHOULDERED

801-6406709 FIND 27

3040-01-378-5015POSSIBLE MATCH

SHAFT,SHOULDERED

211041080

3020-01-379-3097POSSIBLE MATCH

GEAR,INTERNAL

211071415

3040-01-383-5253POSSIBLE MATCH

SHAFT,SHOULDERED

211052706

3020-01-383-5531POSSIBLE MATCH

GEAR,INTERNAL

211071414

3020-01-416-3312POSSIBLE MATCH

GEAR,INTERNAL

6406709-78

4820-01-416-6864POSSIBLE MATCH

GEAR OPERATOR,VALVE

801-6406709-AY90

3020-01-421-5277POSSIBLE MATCH

GEAR,INTERNAL

801-6406709 FIND 81

4820-01-422-2300POSSIBLE MATCH

VALVE RELEASE BUTTON

211041091

4820-01-434-7956POSSIBLE MATCH

INDICATOR,VALVE OPENING

801-6406709-89

3040-01-438-1471POSSIBLE MATCH

SHAFT,SHOULDERED

211094741

Frequently Asked Questions

What is NSN 3020-01-377-7532?

NSN 3020-01-377-7532 is a Gear Cluster, 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 3020-01-377-7532?

NSN 3020-01-377-7532 has 2 manufacturer part numbers on file: 211041101 (Naval Sea Systems Command), 801-6406709 FIND 6 (Naval Sea Systems Command).

What NSN replaces 3020-01-377-7532?

12 possible matches (shared part number, not a government interchangeability claim): 3020-01-377-7533, 3040-01-377-9309, 3040-01-378-5015. Verify interchangeability with system specifications before substitution.

What are the specifications of 211041101?

Key specifications for 211041101: Design Type: SPUR ALL GEARS; Nominal Overall Length: 2.590 INCHES IN; Nominal Outside Diameter: 3.567 INCHES SECOND GEAR IN; Nominal Outside Diameter: 4.167 INCHES FIRST GEAR IN. 6 specifications are documented in the U.S. Government catalog.

Is NSN 3020-01-377-7532 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.

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