PartsTable TECHNICAL DATA SHEET

NSN 4820-01-342-0638Government record, cited

Piston, Valve4820-01-342-0638

NSN 4820-01-342-0638 · NIIN 013420638 · Part number 3427-030

Woodward, Inc. Div Fuel Systems and Controls · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 66503

Government record, cited

NSN 4820-01-342-0638 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-342-0638. Manufacturer of record part number: 3427-030.

Also searched as 4820-01-342-0638 · 4820013420638 · NIIN 013420638 · 01-342-0638 · FSC 4820 Valves, Nonpowered · CAGE 66503 · 3427-030

Nearby stock numbers ← 4820-01-342-0636 Body, Valve · 4820-01-342-0642 Ring, Valve Piston →

4820-01-342-0638 — Valves, Nonpowered

Features

Piston,valve — FSC 4820
Valve Model Number for Which Designed: 3427
Outside Diameter: 0.805 INCHES NOMINAL IN
Valve Design Control Activity: 66503
Material: ALUMINUM ALLOY
1 manufacturer part number on file
Manufacturer of record: Woodward, Inc. Div Fuel Systems and Controls

Identification

NSN: 4820-01-342-0638
NIIN: 013420638
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 3427-030
Manufacturer: Woodward, Inc. Div Fuel Systems and Controls

General Description

The Piston,valve, cataloged under National Stock Number 4820-01-342-0638, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Woodward, Inc. Div Fuel Systems and Controls. Government technical data includes 4 specifications, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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	4820-01-342-0638
Primary Part Number	3427-030
Item Name	Piston,valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Woodward, Inc. Div Fuel Systems and Controls
Status	ACTIVE
Valve Model Number for Which Designed	3427
Outside Diameter	0.805 INCHES NOMINAL IN
Valve Design Control Activity	66503
Material	ALUMINUM ALLOY

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
3427-030 PRIMARY	Woodward, Inc. Div Fuel Systems and Controls (USA)

Reference documents

Reference	Meaning
3427-030	5/2 Secondary reference U.S. Government activity

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 4820-01-342-0638?

NSN 4820-01-342-0638 is a Piston,valve, manufactured by Woodward, Inc. Div Fuel Systems and Controls, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-342-0638?

NSN 4820-01-342-0638 has 1 manufacturer part number on file: 3427-030 (Woodward, Inc. Div Fuel Systems and Controls).

What are the specifications of 3427-030?

Key specifications for 3427-030: Valve Model Number for Which Designed: 3427; Outside Diameter: 0.805 INCHES NOMINAL IN; Overall Length: 1.355 INCHES NOMINAL IN; Valve Design Control Activity: 66503. 4 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-342-0638 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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