PartsTable TECHNICAL DATA SHEET

NSN 4820-01-178-5920Government record, cited

Disk, Valve4820-01-178-5920

NSN 4820-01-178-5920 · NIIN 011785920 · Part number 42008AA

Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 73760

Government record, cited

NSN 4820-01-178-5920 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-178-5920. Manufacturer of record part number: 42008AA.

Also searched as 4820-01-178-5920 · 4820011785920 · NIIN 011785920 · 01-178-5920 · FSC 4820 Valves, Nonpowered · CAGE 73760 · 42008AA

Nearby stock numbers ← 4820-01-178-5516 Valve, Regulating, Fluid Pressure · 4820-01-178-6358 Stem, Fluid Valve →

4820-01-178-5920 — Valves, Nonpowered

Features

Disk,valve — FSC 4820
Outside Diameter: 2.946 INCHES NOMINAL IN
Style Designator: SOLID
Media for Which Designed: GASOLINE OR FUEL, JET
Material: ALUMINUM ALLOY
1 manufacturer part number on file
Manufacturer of record: Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S

Identification

NSN: 4820-01-178-5920
NIIN: 011785920
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 42008AA
Manufacturer: Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S

General Description

The Disk,valve, cataloged under National Stock Number 4820-01-178-5920, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S. 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. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4820-01-178-5920
Primary Part Number	42008AA
Item Name	Disk,valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S
Status	ACTIVE
Outside Diameter	2.946 INCHES NOMINAL IN
Style Designator	SOLID
Media for Which Designed	GASOLINE OR FUEL, JET
Material	ALUMINUM ALLOY

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	X

Cross-Reference Index

Part Number	Manufacturer
42008AA PRIMARY	Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S (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 4820-01-178-5920?

NSN 4820-01-178-5920 is a Disk,valve, manufactured by Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-178-5920?

NSN 4820-01-178-5920 has 1 manufacturer part number on file: 42008AA (Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S).

What are the specifications of 42008AA?

Key specifications for 42008AA: Outside Diameter: 2.946 INCHES NOMINAL IN; Style Designator: SOLID; Special Features: SPLINED MTG STEM ONE END 0.37 IN. DIA 0.30 IN. L,PLAIN MTG STEM 0.37 IN. DIA REDUCED TO 0.250 IN. MAX DIA 0.23 IN. L; OVERALL LG OF BUTTERFLY DISK 4.180 - 4.195 IN. IN; Media for Which Designed: GASOLINE OR FUEL, JET. 4 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-178-5920 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 4820-01-178-5920?

NSN 4820-01-178-5920 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.

PartsTable Design LLC · partstable.com