NSN 4820-00-021-1641 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-021-1641. Manufacturer of record part number: 36252.
Manufacturer of record: Leslie Controls, Inc. Dba Leslie Controls Inc
Identification
NSN: 4820-00-021-1641
NIIN: 000211641
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 36252
Manufacturer: Leslie Controls, Inc. Dba Leslie Controls Inc
General Description
The Disk,valve, cataloged under National Stock Number 4820-00-021-1641, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Leslie Controls, Inc. Dba Leslie Controls 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 9 items share a part number with this NSN in the catalog (possible match — not a government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
4820-00-021-1641
Primary Part Number
36252
Item Name
Disk,valve
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Leslie Controls, Inc. Dba Leslie Controls Inc
Status
ACTIVE
Outside Diameter
1.250 INCHES NOMINAL IN
Material
ALUMINUM ALLOY
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 Items9
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
2910-00-508-1451POSSIBLE MATCH
BOWL,SEDIMENT,FUEL
Possible match (shared part number)
3020-00-640-283436252POSSIBLE MATCH
GEAR,BEVEL
Possible match (shared part number)Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.
5950-00-949-5984POSSIBLE MATCH
TRANSFORMER,POWER
Possible match (shared part number)
4810-01-225-756436252POSSIBLE MATCH
VALVE,DOWN STOP
Possible match (shared part number)Cadillac Gage Textron Inc.
6110-01-373-848136252POSSIBLE MATCH
STARTER,MOTOR
Possible match (shared part number)Allied Systems Company Dba Allied Systems Co
6632-01-529-613436252POSSIBLE MATCH
ANALYZER MODULE,CLINICAL CHEMIST
Possible match (shared part number)Nova Biomedical Corp
5310-01-529-6362362-52POSSIBLE MATCH
WASHER,FLAT
Possible match (shared part number)Crane Carrier Company, Llc
5310-01-598-595136252POSSIBLE MATCH
NUT,PLAIN,HEXAGON
Possible match (shared part number)Wells Technology, Inc.
2030-01-658-726236252POSSIBLE MATCH
MEMBRANE
Possible match (shared part number)Northrop Grumman Systems Corporation
Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
Reference documents
Reference
Meaning
1IN-MR-36252
C/1Advisory reference — outside the item-of-supply concept
Leslie Controls, Inc. Dba Leslie Controls Inc
Related Parts
2910-00-508-1451POSSIBLE MATCH
BOWL,SEDIMENT,FUEL
3020-00-640-2834POSSIBLE MATCH
GEAR,BEVEL
36252
5950-00-949-5984POSSIBLE MATCH
TRANSFORMER,POWER
4810-01-225-7564POSSIBLE MATCH
VALVE,DOWN STOP
36252
6110-01-373-8481POSSIBLE MATCH
STARTER,MOTOR
36252
6632-01-529-6134POSSIBLE MATCH
ANALYZER MODULE,CLINICAL CHEMIST
36252
5310-01-529-6362POSSIBLE MATCH
WASHER,FLAT
362-52
5310-01-598-5951POSSIBLE MATCH
NUT,PLAIN,HEXAGON
36252
2030-01-658-7262POSSIBLE MATCH
MEMBRANE
36252
Frequently Asked Questions
What is NSN 4820-00-021-1641?
NSN 4820-00-021-1641 is a Disk,valve, manufactured by Leslie Controls, Inc. Dba Leslie Controls Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-00-021-1641?
NSN 4820-00-021-1641 has 1 manufacturer part number on file: 36252 (Leslie Controls, Inc. Dba Leslie Controls Inc).
What NSN replaces 4820-00-021-1641?
9 possible matches (shared part number, not a government interchangeability claim): 2910-00-508-1451, 3020-00-640-2834, 5950-00-949-5984. Verify interchangeability with system specifications before substitution.
What are the specifications of 36252?
Key specifications for 36252: Outside Diameter: 1.250 INCHES NOMINAL IN; Material: ALUMINUM ALLOY. 2 specifications are documented in the U.S. Government catalog.
Is NSN 4820-00-021-1641 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.