PartsTable TECHNICAL DATA SHEET

NSN 4820-01-666-0633Government record, cited

Valve, Vent4820-01-666-0633

NSN 4820-01-666-0633 · NIIN 016660633 · Part number 06327-06805-103

Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 78286

Government record, cited

NSN 4820-01-666-0633 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-666-0633. Manufacturer of record part number: 06327-06805-103.

Also searched as 4820-01-666-0633 · 4820016660633 · NIIN 016660633 · 01-666-0633 · FSC 4820 Valves, Nonpowered · CAGE 78286 · 06327-06805-103

Nearby stock numbers ← 4820-01-666-0631 Disk, Valve · 4820-01-666-0684 Valve, Butterfly →

4820-01-666-0633 — Valves, Nonpowered

Features

Valve,vent — FSC 4820
Criticality Code Justification: FEAT
1 manufacturer part number on file
Manufacturer of record: Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp

Identification

NSN: 4820-01-666-0633
NIIN: 016660633
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 06327-06805-103
Manufacturer: Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp

General Description

The Valve,vent, cataloged under National Stock Number 4820-01-666-0633, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp. Government technical data includes 1 specification, cited from the U.S. Government catalog. 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	4820-01-666-0633
Primary Part Number	06327-06805-103
Item Name	Valve,vent
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp
Status	ACTIVE
Criticality Code Justification	FEAT

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	No hazard code in the DLA record (HMIC N)
Criticality Code	F

Cross-Reference Index

Part Number	Manufacturer
06327-06805-103 PRIMARY	Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA)

No interchangeability data on file.

Other items in FSC 4820 — Valves, Nonpowered

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

4820-00-000-0097

4820-00-000-0097 · Item name not on file

4820-00-001-0010

VALVE,ROTARY,SELECTOR

4820-00-001-0020

4820-00-001-0020 · Item name not on file

4820-00-001-0021

4820-00-001-0021 · Item name not on file

4820-00-001-0032

4820-00-001-0032 · Item name not on file

4820-00-001-0037

VALVE,SAFETY RELIEF

4820-00-001-0042

4820-00-001-0042 · Item name not on file

4820-00-001-1230

4820-00-001-1230 · Item name not on file

Frequently Asked Questions

What is NSN 4820-01-666-0633?

NSN 4820-01-666-0633 is a Valve,vent, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-666-0633?

NSN 4820-01-666-0633 has 1 manufacturer part number on file: 06327-06805-103 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp).

What are the specifications of 06327-06805-103?

Key specifications for 06327-06805-103: Criticality Code Justification: FEAT; Special Features: CRITICAL SAFETY ITEM OR CSI (AVIATION CRITICAL SAFETY ITEM/FLIGHT SAFETY CRITICAL AIRCRAFT); DESCRIPTION: VALVE, VENT, SSBV; PART OF AIRCRAFT FUEL SYSTEMS, INTERNAL FUEL STORAGE; Part Name Assigned by Controlling Agency: VALVE,VENT; NOMENCLATURE: VALVE, VENT, SSBV; End Item Identification: CH-53K SIKORSKY HEAVY LIFT HELICOPTER. 1 specification is documented in the U.S. Government catalog.

Is NSN 4820-01-666-0633 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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