NSN 4820-00-022-9943 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-022-9943. Manufacturer of record part number: AE-R.
Surface Treatment Document and Classification: QQ-Z-325, TYPE 2, CHROMATE TREATED FED SPEC SINGLE TREATMENT RESPONSE OUTSIDE
Surface Treatment: ZINC AND CHROMATE OUTSIDE
1 manufacturer part number on file
Manufacturer of record: Arco Engineering Inc
Identification
NSN: 4820-00-022-9943
NIIN: 000229943
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: AE-R
Manufacturer: Arco Engineering Inc
General Description
The Valve,regulating,system Pressure, cataloged under National Stock Number 4820-00-022-9943, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Arco Engineering Inc. Government technical data includes 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 7 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4820-00-022-9943
Primary Part Number
AE-R
Item Name
Valve,regulating,system Pressure
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Arco Engineering Inc
Status
ACTIVE
Surface Treatment Document and Classification
QQ-Z-325, TYPE 2, CHROMATE TREATED FED SPEC SINGLE TREATMENT RESPONSE OUTSIDE
Surface Treatment
ZINC AND CHROMATE OUTSIDE
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
⇄Related Items7
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4140-00-053-3547180120POSSIBLE MATCH
FAN,CENTRIFUGAL
Possible match (shared part number)Telemechanics Inc
5305-00-115-9526B1821BH038C075DPOSSIBLE MATCH
SCREW,CAP,HEXAGON HEAD
Possible match (shared part number)The American Society of Mechanical Engineers
5305-00-619-4718505-3493-001POSSIBLE MATCH
SCREW,CAP,HEXAGON HEAD
Possible match (shared part number)Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
5305-00-776-3746180120POSSIBLE MATCH
SCREW,CAP,HEXAGON HEAD
Possible match (shared part number)Atwood Fence Co Inc
6105-00-846-2686POSSIBLE MATCH
MOTOR,ALTERNATING CURRENT
Possible match (shared part number)
3120-01-164-5352POSSIBLE MATCH
BEARING,ROLLER
Possible match (shared part number)
5306-01-362-7222180120POSSIBLE MATCH
BOLT,MACHINE
Possible match (shared part number)Rolls-Royce Solutions America Inc
NSN 4820-00-022-9943 is a Valve,regulating,system Pressure, manufactured by Arco Engineering Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-00-022-9943?
NSN 4820-00-022-9943 has 1 manufacturer part number on file: AE-R (Arco Engineering Inc).
What NSN replaces 4820-00-022-9943?
7 possible matches (shared part number, not a government interchangeability claim): 4140-00-053-3547, 5305-00-115-9526, 5305-00-619-4718. Verify interchangeability with system specifications before substitution.
What are the specifications of AE-R?
Key specifications for AE-R: Surface Treatment Document and Classification: QQ-Z-325, TYPE 2, CHROMATE TREATED FED SPEC SINGLE TREATMENT RESPONSE OUTSIDE; Surface Treatment: ZINC AND CHROMATE OUTSIDE. 2 specifications are documented in the U.S. Government catalog.
Is NSN 4820-00-022-9943 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.