NSN 4820-00-629-9898 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-629-9898. Manufacturer of record part number: 89601.
Flange Seat to Disk End Height: 0.812 INCHES NOMINAL IN
Outside Diameter: 1.125 INCHES NOMINAL IN
Style Designator: POPPET
Material Document and Classification: AISI 416 ASSN STD SINGLE MATERIAL RESPONSE
Seat Angle: 60.0 DEGREES NOMINAL
Under Flange Height: 0.500 INCHES NOMINAL IN
Identification
NSN: 4820-00-629-9898
NIIN: 006299898
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 89601
Manufacturer: Ashcroft Inc Dba Heise
General Description
The Disk,valve, cataloged under National Stock Number 4820-00-629-9898, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Ashcroft Inc Dba Heise. Government technical data includes 8 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. 3 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
4820-00-629-9898
Primary Part Number
89601
Item Name
Disk,valve
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Ashcroft Inc Dba Heise
Status
ACTIVE
Shank Diameter
1.031 INCHES NOMINAL IN
Flange Seat to Disk End Height
0.812 INCHES NOMINAL IN
Outside Diameter
1.125 INCHES NOMINAL IN
Style Designator
POPPET
Material Document and Classification
AISI 416 ASSN STD SINGLE MATERIAL RESPONSE
Seat Angle
60.0 DEGREES NOMINAL
Under Flange Height
0.500 INCHES NOMINAL IN
Material
STEEL COMP 416
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 Items3
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5330-01-091-262289601POSSIBLE MATCH
GASKET
Possible match (shared part number)Somat Company
6530-01-240-315389601POSSIBLE MATCH
DRAPE,SURGICAL
Possible match (shared part number)Kimberly-Clark Corp Professional Health Care Div
6150-01-554-473089601POSSIBLE MATCH
CABLE ASSEMBLY,SPECIAL PURPOSE,E
Possible match (shared part number)Mettler-Toledo Llc
NSN 4820-00-629-9898 is a Disk,valve, manufactured by Ashcroft Inc Dba Heise, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-00-629-9898?
NSN 4820-00-629-9898 has 2 manufacturer part numbers on file: 5VQU72PC4 (Ashcroft Inc Dba Heise), 89601 (Ashcroft Inc Dba Heise).
What NSN replaces 4820-00-629-9898?
3 possible matches (shared part number, not a government interchangeability claim): 5330-01-091-2622, 6530-01-240-3153, 6150-01-554-4730. Verify interchangeability with system specifications before substitution.
What are the specifications of 89601?
Key specifications for 89601: Shank Diameter: 1.031 INCHES NOMINAL IN; Flange Seat to Disk End Height: 0.812 INCHES NOMINAL IN; Overall Height: 1.500 INCHES NOMINAL IN; Outside Diameter: 1.125 INCHES NOMINAL IN. 8 specifications are documented in the U.S. Government catalog.
Is NSN 4820-00-629-9898 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.