NSN 4820-01-208-2128 · NIIN 012082128 · Part number 639AS744
Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 30003
Government record, cited
NSN 4820-01-208-2128 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-208-2128. Manufacturer of record part number: 639AS744.
Also searched as4820-01-208-2128 ·
4820012082128 ·
NIIN 012082128 ·
01-208-2128 ·
FSC 4820 Valves, Nonpowered · CAGE 30003 · 639AS744
Nearby stock numbers← 4820-01-208-2127
·
4820-01-208-2129 Valve, Flow Control →
4820-01-208-2128 — Valves, Nonpowered
Features
Valve,gas — FSC 4820
General Characteristics Item Description: CORROSION RESISTING STEEL,QQ-S-763,CLASS 302,CONDITION A;0.131 IN.DIA IN
1 manufacturer part number on file
Manufacturer of record: Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
Identification
NSN: 4820-01-208-2128
NIIN: 012082128
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 639AS744
Manufacturer: Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
General Description
The Valve,gas, cataloged under National Stock Number 4820-01-208-2128, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. 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
4820-01-208-2128
Primary Part Number
639AS744
Item Name
Valve,gas
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
Status
ACTIVE
General Characteristics Item Description
CORROSION RESISTING STEEL,QQ-S-763,CLASS 302,CONDITION A;0.131 IN.DIA IN
Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (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 4820-01-208-2128?
NSN 4820-01-208-2128 is a Valve,gas, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-208-2128?
NSN 4820-01-208-2128 has 1 manufacturer part number on file: 639AS744 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).
What are the specifications of 639AS744?
Key specifications for 639AS744: General Characteristics Item Description: CORROSION RESISTING STEEL,QQ-S-763,CLASS 302,CONDITION A;0.131 IN.DIA IN. 1 specification is documented in the U.S. Government catalog.
Is NSN 4820-01-208-2128 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.