NSN 4810-01-331-5626 · NIIN 013315626 · Part number 21-403-0008-4 NUMBER AO-03
Flowserve Corp Dba Automax Actuators Div Flowserve Us Company · FSC 4810 — Valves, Powered · FSG 48 — Valves · CAGE 52374
Government record, cited
NSN 4810-01-331-5626 — this item is cataloged by the U.S. Government under National Stock Number 4810-01-331-5626. Manufacturer of record part number: 21-403-0008-4 NUMBER AO-03.
Nearby stock numbers← 4810-01-331-4638 Sleeve and Slide, Directional Control Linear Valve
·
4810-01-331-6136 Valve, Solenoid →
4810-01-331-5626 — Valves, Powered
Features
Actuator,electromechanical,rotar — FSC 4810
3 manufacturer part numbers on file
Manufacturer of record: Flowserve Corp Dba Automax Actuators Div Flowserve Us Company
Identification
NSN: 4810-01-331-5626
NIIN: 013315626
FSC: 4810 — Valves, Powered
FSG: 48 — Valves
Primary part number: 21-403-0008-4 NUMBER AO-03
Manufacturer: Flowserve Corp Dba Automax Actuators Div Flowserve Us Company
General Description
The Actuator,electromechanical,rotar, cataloged under National Stock Number 4810-01-331-5626, is classified within Federal Supply Class 4810 (Valves, Powered) of the Valves group. The manufacturer of record is Flowserve Corp Dba Automax Actuators Div Flowserve Us Company. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Catalog Facts
Item Name
Actuator,electromechanical,rotar
FSC / FSG
4810 — Valves, Powered (FSG 48)
Manufacturers
Flowserve Corp Dba Automax Actuators Div Flowserve Us Company (CAGE 52374)
Technical Specifications
Parameter
Value
NSN
4810-01-331-5626
Primary Part Number
21-403-0008-4 NUMBER AO-03
Item Name
Actuator,electromechanical,rotar
FSC / FSG
4810 / 48 — Valves, Powered
Manufacturer
Flowserve Corp Dba Automax Actuators Div Flowserve Us Company
Status
ACTIVE
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 Items5
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4810-01-331-880321-403-0008-4 NUMBER AO-08POSSIBLE MATCH
ACTUATOR,ELECTRO-MECHANICAL,LINE
Possible match (shared part number)Flowserve Corp Dba Automax Actuators Div Flowserve Us Company
4810-01-332-245301-435-0398-4 ASSY AO-11POSSIBLE MATCH
ACTUATOR,ELECTROMECHANICAL,ROTAR
Possible match (shared part number)Flowserve Corp Dba Automax Actuators Div Flowserve Us Company
4810-01-332-385721-403-0008-4 NUMBER AO-04POSSIBLE MATCH
ACTUATOR,ELECTROMECHANICAL,ROTAR
Possible match (shared part number)Flowserve Corp Dba Automax Actuators Div Flowserve Us Company
4810-01-333-607921-403-0008-4 NUMBER AO-13POSSIBLE MATCH
ACTUATOR,ELECTRO-MECHANICAL,LINE
Possible match (shared part number)Flowserve Corp Dba Automax Actuators Div Flowserve Us Company
4810-01-335-351001-435-0398-4 ASSY AO-20POSSIBLE MATCH
ACTUATOR,ELECTROMECHANICAL,ROTAR
Possible match (shared part number)Flowserve Corp Dba Automax Actuators Div Flowserve Us Company
Flowserve Corp Dba Automax Actuators Div Flowserve Us Company (USA)
Reference documents
Reference
Meaning
01-435-0398-4
D/9Drawing number reference only
Flowserve Corp Dba Automax Actuators Div Flowserve Us Company
21-403-0008-4
D/9Drawing number reference only
Flowserve Corp Dba Automax Actuators Div Flowserve Us Company
Related Parts
4810-01-331-8803POSSIBLE MATCH
ACTUATOR,ELECTRO-MECHANICAL,LINE
21-403-0008-4 NUMBER AO-08
4810-01-332-2453POSSIBLE MATCH
ACTUATOR,ELECTROMECHANICAL,ROTAR
01-435-0398-4 ASSY AO-11
4810-01-332-3857POSSIBLE MATCH
ACTUATOR,ELECTROMECHANICAL,ROTAR
21-403-0008-4 NUMBER AO-04
4810-01-333-6079POSSIBLE MATCH
ACTUATOR,ELECTRO-MECHANICAL,LINE
21-403-0008-4 NUMBER AO-13
4810-01-335-3510POSSIBLE MATCH
ACTUATOR,ELECTROMECHANICAL,ROTAR
01-435-0398-4 ASSY AO-20
Frequently Asked Questions
What is NSN 4810-01-331-5626?
NSN 4810-01-331-5626 is a Actuator,electromechanical,rotar, manufactured by Flowserve Corp Dba Automax Actuators Div Flowserve Us Company, classified under FSC 4810, Valves, Powered. Status: active.
What part numbers are listed for NSN 4810-01-331-5626?
NSN 4810-01-331-5626 has 3 manufacturer part numbers on file: 21-403-0008-4 NUMBER AO-03 (Flowserve Corp Dba Automax Actuators Div Flowserve Us Company), AO-03 (Flowserve Corp Dba Automax Actuators Div Flowserve Us Company), 01-435-0398-4 ASSY AO-03 (Flowserve Corp Dba Automax Actuators Div Flowserve Us Company).
What NSN replaces 4810-01-331-5626?
5 possible matches (shared part number, not a government interchangeability claim): 4810-01-331-8803, 4810-01-332-2453, 4810-01-332-3857. Verify interchangeability with system specifications before substitution.
Is NSN 4810-01-331-5626 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.