Gear Cluster3020-01-057-0638

NSN 3020-01-057-0638 · NIIN 010570638

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

Government record, cited

Also searched as 3020-01-057-0638 · 3020010570638 · NIIN 010570638 · 01-057-0638 · FSC 3020 Gears, Pulleys, Sprockets, and Transmission Chain

Nearby stock numbers ← 3020-01-057-0637 · 3020-01-057-0639 →

Features

Gear Cluster — FSC 3020
Bore Nominal Diameter: 0.250 INCHES BOTH ENDS IN
Design Type: SPUR SECOND GEAR
Design Type: SPUR FIRST GEAR
Bore Style: W/ KEYWAY BOTH ENDS
Nominal Overall Length: 0.370 INCHES IN
Material Document and Classification: AMS 6260 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Hub Style Designator: PLAIN FIRST END

Identification

NSN: 3020-01-057-0638
NIIN: 010570638
FSC: 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
FSG: 30 — Mechanical Power Transmission Equipment

General Description

The Gear Cluster, cataloged under National Stock Number 3020-01-057-0638, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	3020-01-057-0638
Item Name	Gear Cluster
FSC / FSG	3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain
Status	ACTIVE
Bore Nominal Diameter	0.250 INCHES BOTH ENDS IN
Design Type	SPUR SECOND GEAR
Design Type	SPUR FIRST GEAR
Bore Style	W/ KEYWAY BOTH ENDS
Nominal Overall Length	0.370 INCHES IN
Material Document and Classification	AMS 6260 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Hub Style Designator	PLAIN FIRST END
Hub Nominal Length	0.0600 INCHES FIRST END IN
Material	STEEL COMP E9310 OVERALL
Construction	SOLID

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL B — Remove Demilitarization Key Points
Hazard	No hazard code in the DLA record (HMIC N)
Criticality Code	X

Cross-Reference Index

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

Reference documents

Reference	Meaning
1685167-3	3/2 Design control — primary reference U.S. Government activity

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 3020-01-057-0638?

NSN 3020-01-057-0638 is a Gear Cluster, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.

What are the specifications of 3020-01-057-0638?

Key specifications for 3020-01-057-0638: Bore Nominal Diameter: 0.250 INCHES BOTH ENDS IN; Design Type: SPUR SECOND GEAR; Design Type: SPUR FIRST GEAR; Bore Style: W/ KEYWAY BOTH ENDS. 10 specifications are documented in the U.S. Government catalog.

Is NSN 3020-01-057-0638 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.

What is the DEMIL code for NSN 3020-01-057-0638?

NSN 3020-01-057-0638 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.

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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