PartsTable TECHNICAL DATA SHEET

NSN 3020-01-178-9845Government record, cited

Gear, Internal3020-01-178-9845

NSN 3020-01-178-9845 · NIIN 011789845 · Part number 6625-L

Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic · FSC 3020 — Gears, Pulleys, Sprockets, and Transmission Chain · FSG 30 — Mechanical Power Transmission Equipment · CAGE 61208

Government record, cited

NSN 3020-01-178-9845 — this item is cataloged by the U.S. Government under National Stock Number 3020-01-178-9845. Manufacturer of record part number: 6625-L.

Also searched as 3020-01-178-9845 · 3020011789845 · NIIN 011789845 · 01-178-9845 · FSC 3020 Gears, Pulleys, Sprockets, and Transmission Chain · CAGE 61208 · 6625-L · 278925R2

Nearby stock numbers ← 3020-01-178-9844 Gear, Spur · 3020-01-178-9846 Gear Cluster →

Features

Gear,internal — FSC 3020
1 manufacturer part number on file
Manufacturer of record: Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic

Identification

NSN: 3020-01-178-9845
NIIN: 011789845
FSC: 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
FSG: 30 — Mechanical Power Transmission Equipment
Primary part number: 6625-L
Manufacturer: Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic

General Description

The Gear,internal, cataloged under National Stock Number 3020-01-178-9845, 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 Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.

Catalog Facts

Item Name	Gear,internal
FSC / FSG	3020 — Gears, Pulleys, Sprockets, and Transmission Chain (FSG 30)
Manufacturers	Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (CAGE 61208)

Technical Specifications

Parameter	Value
NSN	3020-01-178-9845
Primary Part Number	6625-L
Item Name	Gear,internal
FSC / FSG	3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain
Manufacturer	Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic
Status	ACTIVE

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

Cross-Reference Index

Part Number	Manufacturer
6625-L PRIMARY	Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (USA)

Reference documents

Reference	Meaning
278925R2	D/9 Drawing number reference only Komatsu American Intl Co

No interchangeability data on file.

Other items in FSC 3020 — Gears, Pulleys, Sprockets, and Transmission Chain

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

3020-00-000-0091

GEAR,SPUR

3020-00-001-0027

3020-00-001-0027 · Item name not on file

3020-00-001-0028

3020-00-001-0028 · Item name not on file

3020-00-001-0063

3020-00-001-0063 · Item name not on file

3020-00-001-0064

3020-00-001-0064 · Item name not on file

3020-00-001-0066

3020-00-001-0066 · Item name not on file

3020-00-001-0071

3020-00-001-0071 · Item name not on file

3020-00-001-0072

3020-00-001-0072 · Item name not on file

Frequently Asked Questions

What is NSN 3020-01-178-9845?

NSN 3020-01-178-9845 is a Gear,internal, manufactured by Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.

What part numbers are listed for NSN 3020-01-178-9845?

NSN 3020-01-178-9845 has 1 manufacturer part number on file: 6625-L (Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic).

Is NSN 3020-01-178-9845 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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