Refrigeration Unit, Air Cycle, Air1660-01-643-0847

NSN 1660-01-643-0847 · NIIN 016430847 · Part number 70A000-4

Enviro Systems Inc · FSC 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment · FSG 16 — Aircraft Components and Accessories · CAGE 0B9E8

Government record, cited

NSN 1660-01-643-0847 — this item is cataloged by the U.S. Government under National Stock Number 1660-01-643-0847. Manufacturer of record part number: 70A000-4.

Also searched as 1660-01-643-0847 · 1660016430847 · NIIN 016430847 · 01-643-0847 · FSC 1660 Aircraft Air Conditioning, Heating, and Pressurizing Equipment · CAGE 0B9E8 · 70A000-4

Nearby stock numbers ← 1660-01-642-9650 Cylinder Assembly, Oxygen, Aircraf · 1660-01-643-1259 Hardshell, Oxygen Mask, Aircraft →

Features

Refrigeration Unit,air Cycle,air — FSC 1660
1 manufacturer part number on file
Manufacturer of record: Enviro Systems Inc

Identification

NSN: 1660-01-643-0847
NIIN: 016430847
FSC: 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
FSG: 16 — Aircraft Components and Accessories
Primary part number: 70A000-4
Manufacturer: Enviro Systems Inc

General Description

The Refrigeration Unit,air Cycle,air, cataloged under National Stock Number 1660-01-643-0847, is classified within Federal Supply Class 1660 (Aircraft Air Conditioning, Heating, and Pressurizing Equipment) of the Aircraft Components and Accessories group. The manufacturer of record is Enviro Systems Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	1660-01-643-0847
Primary Part Number	70A000-4
Item Name	Refrigeration Unit,air Cycle,air
FSC / FSG	1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
Manufacturer	Enviro Systems Inc
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
70A000-4 PRIMARY	Enviro Systems Inc (USA)

No interchangeability data on file.

Other items in FSC 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment

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

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1660-01-601-0729

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Frequently Asked Questions

What is NSN 1660-01-643-0847?

NSN 1660-01-643-0847 is a Refrigeration Unit,air Cycle,air, manufactured by Enviro Systems Inc, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.

What part numbers are listed for NSN 1660-01-643-0847?

NSN 1660-01-643-0847 has 1 manufacturer part number on file: 70A000-4 (Enviro Systems Inc).

What are the specifications of 70A000-4?

Key specifications for 70A000-4: Part Name Assigned by Controlling Agency: VAPOR CYCLE AIR CONDITIONER AND ELECTRIC HEATER. 0 specifications are documented in the U.S. Government catalog.

Is NSN 1660-01-643-0847 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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