NSN 4820-01-049-9555 · NIIN 010499555 · Part number A-10644-003-142
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 15187
Government record, cited
NSN 4820-01-049-9555 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-049-9555. Manufacturer of record part number: A-10644-003-142.
Manufacturer of record: Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
Identification
NSN: 4820-01-049-9555
NIIN: 010499555
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: A-10644-003-142
Manufacturer: Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
General Description
The Disk,valve, cataloged under National Stock Number 4820-01-049-9555, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Emerson Automation Solutions Final Control Us Lp Div Navy Product Team. Government technical data includes 4 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 7 items share a part number with this NSN in the catalog (possible match — not a government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
4820-01-049-9555
Primary Part Number
A-10644-003-142
Item Name
Disk,valve
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
Status
ACTIVE
Outside Diameter
1.126 INCHES NOMINAL IN
Style Designator
PLAIN
Inside Diameter
0.756 INCHES NOMINAL IN
Material
PLASTIC ACETAL
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.
4820-01-051-468207525001130POSSIBLE MATCH
HEAD,VALVE
Possible match (shared part number)Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
4820-01-051-8492A6792-044-132POSSIBLE MATCH
STEM,FLUID VALVE
Possible match (shared part number)Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
4820-01-130-869810644.003.142POSSIBLE MATCH
DISK,VALVE
Possible match (shared part number)Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
4240-01-189-1616POSSIBLE MATCH
RESPIRATOR,AIR FILTERING
Possible match (shared part number)
4820-01-201-81058725H91M 1INPOSSIBLE MATCH
VALVE,SAFETY RELIEF
Possible match (shared part number)Anderson Greenwood Lp Dba Anderson Greenwood Crosby
4820-01-210-02628725F91MPOSSIBLE MATCH
VALVE,SAFETY RELIEF
Possible match (shared part number)Anderson Greenwood Lp Dba Anderson Greenwood Crosby
5365-01-216-37328725POSSIBLE MATCH
SPACER,SLEEVE
Possible match (shared part number)Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA)
Reference documents
Reference
Meaning
8725
D/9Drawing number reference only
Anderson Greenwood Lp Dba Anderson Greenwood Crosby
A10644.003.142
C/1Advisory reference — outside the item-of-supply concept
Anderson Greenwood Lp Dba Anderson Greenwood Crosby
A-10644-003-142
5/9Secondary reference
Anderson Greenwood Lp Dba Anderson Greenwood Crosby
8725
5/9Secondary reference
Anderson Greenwood and Co
Related Parts
4820-01-051-4682POSSIBLE MATCH
HEAD,VALVE
07525001130
4820-01-051-8492POSSIBLE MATCH
STEM,FLUID VALVE
A6792-044-132
4820-01-130-8698POSSIBLE MATCH
DISK,VALVE
10644.003.142
4240-01-189-1616POSSIBLE MATCH
RESPIRATOR,AIR FILTERING
4820-01-201-8105POSSIBLE MATCH
VALVE,SAFETY RELIEF
8725H91M 1IN
4820-01-210-0262POSSIBLE MATCH
VALVE,SAFETY RELIEF
8725F91M
5365-01-216-3732POSSIBLE MATCH
SPACER,SLEEVE
8725
Frequently Asked Questions
What is NSN 4820-01-049-9555?
NSN 4820-01-049-9555 is a Disk,valve, manufactured by Emerson Automation Solutions Final Control Us Lp Div Navy Product Team, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-049-9555?
NSN 4820-01-049-9555 has 1 manufacturer part number on file: A-10644-003-142 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team).
What NSN replaces 4820-01-049-9555?
7 possible matches (shared part number, not a government interchangeability claim): 4820-01-051-4682, 4820-01-051-8492, 4820-01-130-8698. Verify interchangeability with system specifications before substitution.
What are the specifications of A-10644-003-142?
Key specifications for A-10644-003-142: Overall Height: 0.189 INCHES NOMINAL IN; Outside Diameter: 1.126 INCHES NOMINAL IN; Style Designator: PLAIN; Inside Diameter: 0.756 INCHES NOMINAL IN. 4 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-049-9555 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.