NSN 4820-01-183-0604 · NIIN 011830604 · Part number 71021
M D Holdings Llc Dba Saniserv · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 04742
Government record, cited
NSN 4820-01-183-0604 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-183-0604. Manufacturer of record part number: 71021.
Also searched as4820-01-183-0604 ·
4820011830604 ·
NIIN 011830604 ·
01-183-0604 ·
FSC 4820 Valves, Nonpowered · CAGE 04742 · 71021
Manufacturer of record: M D Holdings Llc Dba Saniserv
Identification
NSN: 4820-01-183-0604
NIIN: 011830604
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 71021
Manufacturer: M D Holdings Llc Dba Saniserv
General Description
The Valve,expansion, cataloged under National Stock Number 4820-01-183-0604, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is M D Holdings Llc Dba Saniserv. 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. 6 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
4820-01-183-0604
Primary Part Number
71021
Item Name
Valve,expansion
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
M D Holdings Llc Dba Saniserv
Status
ACTIVE
Bulb Media Type
REFRIGERANT 22
Material
COPPER ALLOY AND COPPER BODY
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 Items6
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4820-01-212-086671021POSSIBLE MATCH
VALVE,CHECK
Possible match (shared part number)Eaton Corporation Dba Eaton Inoac Div Eaton
4720-01-278-3601POSSIBLE MATCH
HOSE,NONMETALLIC
Possible match (shared part number)
5307-01-418-0615POSSIBLE MATCH
STUD,CONTINUOUS THREAD
Possible match (shared part number)
3110-01-438-4951NATR 40 PPPOSSIBLE MATCH
BEARING,ROLLER,TRACK ROLLER
Possible match (shared part number)Skf Usa Inc.
5310-01-590-950971021POSSIBLE MATCH
WASHER,FLAT
Possible match (shared part number)Fastenal Company Div Pacar
5310-01-598-540471021POSSIBLE MATCH
WASHER,FLAT
Possible match (shared part number)Wells Technology, Inc.
NSN 4820-01-183-0604 is a Valve,expansion, manufactured by M D Holdings Llc Dba Saniserv, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-183-0604?
NSN 4820-01-183-0604 has 1 manufacturer part number on file: 71021 (M D Holdings Llc Dba Saniserv).
What NSN replaces 4820-01-183-0604?
6 possible matches (shared part number, not a government interchangeability claim): 4820-01-212-0866, 4720-01-278-3601, 5307-01-418-0615. Verify interchangeability with system specifications before substitution.
What are the specifications of 71021?
Key specifications for 71021: Bulb Media Type: REFRIGERANT 22; Material: COPPER ALLOY AND COPPER BODY. 2 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-183-0604 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.