NSN 4820-00-533-8254 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-533-8254. Manufacturer of record part number: AV46-944PC30.
Material Document and Classification: QQ-A-763, CLASS 303 FED SPEC SINGLE MATERIAL RESPONSE
Seat Angle: 60.0 DEGREES NOMINAL
Material: STEEL COMP 303 OR STEEL CORROSION RESISTING
2 manufacturer part numbers on file
Identification
NSN: 4820-00-533-8254
NIIN: 005338254
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: AV46-944PC30
Manufacturer: Automatic Switch Company Dba Asco
General Description
The Disk,valve, cataloged under National Stock Number 4820-00-533-8254, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Automatic Switch Company Dba Asco. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4820-00-533-8254
Primary Part Number
AV46-944PC30
Item Name
Disk,valve
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Automatic Switch Company Dba Asco
Status
ACTIVE
Shank Diameter
0.484 INCHES NOMINAL IN
Flange Diameter
0.100 INCHES NOMINAL IN
Style Designator
POPPET
Material Document and Classification
QQ-A-763, CLASS 303 FED SPEC SINGLE MATERIAL RESPONSE
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 4820-00-533-8254?
NSN 4820-00-533-8254 is a Disk,valve, manufactured by Automatic Switch Company Dba Asco, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-00-533-8254?
NSN 4820-00-533-8254 has 2 manufacturer part numbers on file: AV46-944PC30 (Automatic Switch Company Dba Asco), FV21-343 (Automatic Switch Company Dba Asco).
What are the specifications of AV46-944PC30?
Key specifications for AV46-944PC30: Shank Diameter: 0.484 INCHES NOMINAL IN; Flange Diameter: 0.100 INCHES NOMINAL IN; Overall Height: 1.144 INCHES MINIMUM AND 1.160 INCHES MAXIMUM IN; Style Designator: POPPET. 6 specifications are documented in the U.S. Government catalog.
Is NSN 4820-00-533-8254 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.