Regulator, Air Pressure, Aircraft1660-00-970-3764

NSN 1660-00-970-3764 · NIIN 009703764 · Part number 550999

Hamilton Sundstrand Corporation Dba Collins Aerospace · FSC 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment · FSG 16 — Aircraft Components and Accessories · CAGE 73030

Government record, cited

NSN 1660-00-970-3764 — this item is cataloged by the U.S. Government under National Stock Number 1660-00-970-3764. Manufacturer of record part number: 550999.

Also searched as 1660-00-970-3764 · 1660009703764 · NIIN 009703764 · 00-970-3764 · FSC 1660 Aircraft Air Conditioning, Heating, and Pressurizing Equipment · CAGE 73030 · 550999

Nearby stock numbers ← 1660-00-970-3761 Controller, Temperat · 1660-00-970-3767 Valve Assembly, Cabi →

Features

Regulator,air Pressure,aircraft — FSC 1660
1 manufacturer part number on file
Manufacturer of record: Hamilton Sundstrand Corporation Dba Collins Aerospace

Identification

NSN: 1660-00-970-3764
NIIN: 009703764
FSC: 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
FSG: 16 — Aircraft Components and Accessories
Primary part number: 550999
Manufacturer: Hamilton Sundstrand Corporation Dba Collins Aerospace

General Description

The Regulator,air Pressure,aircraft, cataloged under National Stock Number 1660-00-970-3764, 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 Hamilton Sundstrand Corporation Dba Collins Aerospace. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Catalog Facts

Item Name	Regulator,air Pressure,aircraft
FSC / FSG	1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment (FSG 16)
Manufacturers	Hamilton Sundstrand Corporation Dba Collins Aerospace (CAGE 73030)

Technical Specifications

Parameter	Value
NSN	1660-00-970-3764
Primary Part Number	550999
Item Name	Regulator,air Pressure,aircraft
FSC / FSG	1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
Manufacturer	Hamilton Sundstrand Corporation Dba Collins Aerospace
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	V

Cross-Reference Index

Part Number	Manufacturer
550999 PRIMARY	Hamilton Sundstrand Corporation Dba Collins Aerospace (USA)

Frequently Asked Questions

What is NSN 1660-00-970-3764?

NSN 1660-00-970-3764 is a Regulator,air Pressure,aircraft, manufactured by Hamilton Sundstrand Corporation Dba Collins Aerospace, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.

What part numbers are listed for NSN 1660-00-970-3764?

NSN 1660-00-970-3764 has 1 manufacturer part number on file: 550999 (Hamilton Sundstrand Corporation Dba Collins Aerospace).

Is NSN 1660-00-970-3764 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 1660-00-970-3764?

NSN 1660-00-970-3764 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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