PartsTable TECHNICAL DATA SHEET

NSN 3020-01-122-9936Government record, cited

Gear Box3020-01-122-9936

NSN 3020-01-122-9936 · NIIN 011229936

FSC 3020 — Gears, Pulleys, Sprockets, and Transmission Chain · FSG 30 — Mechanical Power Transmission Equipment

Government record, cited

Also searched as 3020-01-122-9936 · 3020011229936 · NIIN 011229936 · 01-122-9936 · FSC 3020 Gears, Pulleys, Sprockets, and Transmission Chain · 201-4684481 ITEM 2 · 87776-0106 ITEM 2 · 201-4684481 ITE · 87776-0106 ITEM 2 · 87776-0106

Nearby stock numbers ← 3020-01-122-9934 Gear, Spur · 3020-01-123-0021 Guard, Mechanical Drive →

Features

Gear Box — FSC 3020
General Characteristics Item Description: COPPER ALLOY,MIL-B-24480

Identification

NSN: 3020-01-122-9936
NIIN: 011229936
FSC: 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
FSG: 30 — Mechanical Power Transmission Equipment

General Description

The Gear Box, cataloged under National Stock Number 3020-01-122-9936, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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	3020-01-122-9936
Item Name	Gear Box
FSC / FSG	3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain
Status	ACTIVE
General Characteristics Item Description	COPPER ALLOY,MIL-B-24480

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 5

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

3020-01-123-1669201-4684481 ITEM 5 POSSIBLE MATCH

GEAR,BEVEL

Possible match (shared part number)Naval Ship Systems Command

3040-01-123-301387776-0106 ITEM 12 POSSIBLE MATCH

SHAFT,SHOULDERED

Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat

3020-01-123-395687776-0106 ITEM 3 POSSIBLE MATCH

COVER,GEAR BOX

Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat

3040-01-123-572387776-0106 ITEM 7 POSSIBLE MATCH

SHAFT,SHOULDERED

Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat

3020-01-192-46324684481-0006 POSSIBLE MATCH

GEAR,BEVEL

Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat

Cross-Reference Index

No manufacturer part numbers on file in the U.S. Government catalog.

Reference documents

Reference	Meaning
201-4684481 ITEM 2	3/2 Design control — primary reference U.S. Government activity
87776-0106 ITEM 2	5/9 Secondary reference Drw Mfg Co
201-4684481 ITE	C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command
87776-0106 ITEM 2	3/2 Design control — primary reference U.S. Government activity
87776-0106	D/9 Drawing number reference only U.S. Government activity
201-4684481	D/9 Drawing number reference only U.S. Government activity

Related Parts

3020-01-123-1669POSSIBLE MATCH

GEAR,BEVEL

201-4684481 ITEM 5

3040-01-123-3013POSSIBLE MATCH

SHAFT,SHOULDERED

87776-0106 ITEM 12

3020-01-123-3956POSSIBLE MATCH

COVER,GEAR BOX

87776-0106 ITEM 3

3040-01-123-5723POSSIBLE MATCH

SHAFT,SHOULDERED

87776-0106 ITEM 7

3020-01-192-4632POSSIBLE MATCH

GEAR,BEVEL

4684481-0006

Frequently Asked Questions

What is NSN 3020-01-122-9936?

NSN 3020-01-122-9936 is a Gear Box, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.

What NSN replaces 3020-01-122-9936?

5 possible matches (shared part number, not a government interchangeability claim): 3020-01-123-1669, 3040-01-123-3013, 3020-01-123-3956. Verify interchangeability with system specifications before substitution.

What are the specifications of 3020-01-122-9936?

Key specifications for 3020-01-122-9936: General Characteristics Item Description: COPPER ALLOY,MIL-B-24480. 1 specification is documented in the U.S. Government catalog.

Is NSN 3020-01-122-9936 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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