Gear, Internal3020-01-079-3138

NSN 3020-01-079-3138 · NIIN 010793138

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

Government record, cited

Also searched as 3020-01-079-3138 · 3020010793138 · NIIN 010793138 · 01-079-3138 · FSC 3020 Gears, Pulleys, Sprockets, and Transmission Chain · 42277D604 · 42277D604

Nearby stock numbers ← 3020-01-079-2954 Gear, Spur · 3020-01-079-3161 Gear Set, Bevel, Matched →

Features

Gear,internal — FSC 3020
Teeth Quantity: 120
Body Style: PLAIN, SOLID
Teeth Type: SPUR
Nominal Overall Length: 0.375 INCHES IN
Style Designator: PLAIN RING
Pitch Diameter: 1.8750 INCHES NOMINAL IN
Tooth Form: STANDARD

Identification

NSN: 3020-01-079-3138
NIIN: 010793138
FSC: 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
FSG: 30 — Mechanical Power Transmission Equipment

General Description

The Gear,internal, cataloged under National Stock Number 3020-01-079-3138, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	3020-01-079-3138
Item Name	Gear,internal
FSC / FSG	3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain
Status	ACTIVE
Teeth Quantity	120
Body Style	PLAIN, SOLID
Teeth Type	SPUR
Nominal Overall Length	0.375 INCHES IN
Style Designator	PLAIN RING
Pitch Diameter	1.8750 INCHES NOMINAL IN
Tooth Form	STANDARD
Nominal Outside Diameter	2.375 INCHES IN
Surface Treatment	OXIDE OVERALL
Pressure Angle	20.0000 DEGREES
Material	STEEL OVERALL

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

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

Reference documents

Reference	Meaning
42277D604	3/9 Design control — primary reference Goodrich Corporation Dba Trw Lucas Aerospace
42277D604	5/9 Secondary 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 3020-01-079-3138?

NSN 3020-01-079-3138 is a Gear,internal, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.

What are the specifications of 3020-01-079-3138?

Key specifications for 3020-01-079-3138: Teeth Quantity: 120; Body Style: PLAIN, SOLID; Teeth Type: SPUR; Nominal Overall Length: 0.375 INCHES IN. 11 specifications are documented in the U.S. Government catalog.

Is NSN 3020-01-079-3138 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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