Ratio Transformer a4920-01-221-2645

NSN 4920-01-221-2645 · NIIN 012212645

FSC 4920 — Aircraft Maintenance and Repair Shop Specialized Equipment · FSG 49 — Maintenance and Repair Shop Equipment

Government record, cited

Also searched as 4920-01-221-2645 · 4920012212645 · NIIN 012212645 · 01-221-2645 · FSC 4920 Aircraft Maintenance and Repair Shop Specialized Equipment

Nearby stock numbers ← 4920-01-221-2644 Frequency Unit · 4920-01-221-2647 Drawer Assembly, Power Supply →

Features

Ratio Transformer a — FSC 4920

Identification

NSN: 4920-01-221-2645
NIIN: 012212645
FSC: 4920 — Aircraft Maintenance and Repair Shop Specialized Equipment
FSG: 49 — Maintenance and Repair Shop Equipment

General Description

The Ratio Transformer a, cataloged under National Stock Number 4920-01-221-2645, is classified within Federal Supply Class 4920 (Aircraft Maintenance and Repair Shop Specialized Equipment) of the Maintenance and Repair Shop Equipment group. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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	4920-01-221-2645
Item Name	Ratio Transformer a
FSC / FSG	4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment
Status	ACTIVE

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL Q — CCL Item — Commerce Control List
Hazard	No hazard code in the DLA record (HMIC N)
Criticality Code	N

Cross-Reference Index

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

Reference documents

Reference	Meaning
57988-46745-1	3/2 Design control — primary reference U.S. Government activity

No interchangeability data on file.

Other items in FSC 4920 — Aircraft Maintenance and Repair Shop Specialized Equipment

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

4920-00-000-0190

TEST SET,FLIGHT CONTROL SYSTEM

4920-00-001-1405

4920-00-001-1405 · Item name not on file

4920-00-001-1716

4920-00-001-1716 · Item name not on file

4920-00-001-1744

4920-00-001-1744 · Item name not on file

4920-00-001-1745

4920-00-001-1745 · Item name not on file

4920-00-001-1746

4920-00-001-1746 · Item name not on file

4920-00-001-1747

4920-00-001-1747 · Item name not on file

4920-00-001-1748

4920-00-001-1748 · Item name not on file

Frequently Asked Questions

What is NSN 4920-01-221-2645?

NSN 4920-01-221-2645 is a Ratio Transformer a, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.

What are the specifications of 4920-01-221-2645?

Key specifications for 4920-01-221-2645: End Item Identification: AIRCRAFT MODEL P-3. 0 specifications are documented in the U.S. Government catalog.

Is NSN 4920-01-221-2645 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 4920-01-221-2645?

NSN 4920-01-221-2645 has DEMIL Code Q. 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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