NSN 4820-01-461-1657 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-461-1657. Manufacturer of record part number: 3418AS2161.
Also searched as4820-01-461-1657 ·
4820014611657 ·
NIIN 014611657 ·
01-461-1657 ·
FSC 4820 Valves, Nonpowered · CAGE 9J740 · 3418AS2161
Nearby stock numbers← 4820-01-461-1656
·
4820-01-461-1703 Valve, Flow Control →
4820-01-461-1657 — Valves, Nonpowered
Features
Valve,vacuum Regulating — FSC 4820
2 manufacturer part numbers on file
Manufacturer of record: Csts, Inc Dba Computer Sys Techl Support
Identification
NSN: 4820-01-461-1657
NIIN: 014611657
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 3418AS2161
Manufacturer: Csts, Inc Dba Computer Sys Techl Support
General Description
The Valve,vacuum Regulating, cataloged under National Stock Number 4820-01-461-1657, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Csts, Inc Dba Computer Sys Techl Support. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Catalog Facts
Item Name
Valve,vacuum Regulating
FSC / FSG
4820 — Valves, Nonpowered (FSG 48)
Manufacturers
Csts, Inc Dba Computer Sys Techl Support (CAGE 9J740); Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (CAGE 30003)
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 4820-01-461-1657?
NSN 4820-01-461-1657 is a Valve,vacuum Regulating, manufactured by Csts, Inc Dba Computer Sys Techl Support, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-461-1657?
NSN 4820-01-461-1657 has 2 manufacturer part numbers on file: 3418AS2161 (Csts, Inc Dba Computer Sys Techl Support), 3418AS2161 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).
Is NSN 4820-01-461-1657 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.