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NSN 4820-01-239-8997Government record, cited

Subplate Assembly, Valve4820-01-239-8997

NSN 4820-01-239-8997 · NIIN 012398997 · Part number 3121RA-12
Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 78062
Government record, cited
NSN 4820-01-239-8997 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-239-8997. Manufacturer of record part number: 3121RA-12.
Also searched as  4820-01-239-8997 · 4820012398997 · NIIN 012398997 · 01-239-8997 · FSC 4820 Valves, Nonpowered · CAGE 78062 · 3121RA-12
Nearby stock numbers  ·
Features
  • Subplate Assembly,valve — FSC 4820
  • General Characteristics Item Description: ALUMINUM ALLOY
  • 1 manufacturer part number on file
  • Manufacturer of record: Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
Identification
  • NSN: 4820-01-239-8997
  • NIIN: 012398997
  • FSC: 4820 — Valves, Nonpowered
  • FSG: 48 — Valves
  • Primary part number: 3121RA-12
  • Manufacturer: Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
General Description

The Subplate Assembly,valve, cataloged under National Stock Number 4820-01-239-8997, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace. 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
ParameterValue
NSN4820-01-239-8997
Primary Part Number3121RA-12
Item NameSubplate Assembly,valve
FSC / FSG4820 / 48 — Valves, Nonpowered
ManufacturerSargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
StatusACTIVE
General Characteristics Item DescriptionALUMINUM ALLOY
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
Cross-Reference Index
Part NumberManufacturer
3121RA-12 PRIMARY Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace (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 4820-01-239-8997?

NSN 4820-01-239-8997 is a Subplate Assembly,valve, manufactured by Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-239-8997?

NSN 4820-01-239-8997 has 1 manufacturer part number on file: 3121RA-12 (Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace).

What are the specifications of 3121RA-12?

Key specifications for 3121RA-12: General Characteristics Item Description: ALUMINUM ALLOY. 1 specification is documented in the U.S. Government catalog.

Is NSN 4820-01-239-8997 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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