NSN 4310-01-646-5991 · NIIN 016465991 · Part number WLR121
Fincantieri Marine Systems North America, Inc. Dba Fincantieri Marine Systems North Am · FSC 4310 — Compressors and Vacuum Pumps · FSG 43 — Pumps and Compressors · CAGE 0VP52
Government record, cited
NSN 4310-01-646-5991 — this item is cataloged by the U.S. Government under National Stock Number 4310-01-646-5991. Manufacturer of record part number: WLR121.
Also searched as4310-01-646-5991 ·
4310016465991 ·
NIIN 016465991 ·
01-646-5991 ·
FSC 4310 Compressors and Vacuum Pumps · CAGE 0VP52 · WLR121
Nearby stock numbers← 4310-01-646-3959 Air Cleaner, Intake
·
4310-01-646-8019 Accessory Kit, Pressure Tank →
Features
Heater,diffusion Vacuum Pump,ele — FSC 4310
1 manufacturer part number on file
Manufacturer of record: Fincantieri Marine Systems North America, Inc. Dba Fincantieri Marine Systems North Am
Identification
NSN: 4310-01-646-5991
NIIN: 016465991
FSC: 4310 — Compressors and Vacuum Pumps
FSG: 43 — Pumps and Compressors
Primary part number: WLR121
Manufacturer: Fincantieri Marine Systems North America, Inc. Dba Fincantieri Marine Systems North Am
General Description
The Heater,diffusion Vacuum Pump,ele, cataloged under National Stock Number 4310-01-646-5991, is classified within Federal Supply Class 4310 (Compressors and Vacuum Pumps) of the Pumps and Compressors group. The manufacturer of record is Fincantieri Marine Systems North America, Inc. Dba Fincantieri Marine Systems North Am. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Catalog Facts
Item Name
Heater,diffusion Vacuum Pump,ele
FSC / FSG
4310 — Compressors and Vacuum Pumps (FSG 43)
Manufacturers
Fincantieri Marine Systems North America, Inc. Dba Fincantieri Marine Systems North Am (CAGE 0VP52)
Technical Specifications
Parameter
Value
NSN
4310-01-646-5991
Primary Part Number
WLR121
Item Name
Heater,diffusion Vacuum Pump,ele
FSC / FSG
4310 / 43 — Compressors and Vacuum Pumps
Manufacturer
Fincantieri Marine Systems North America, Inc. Dba Fincantieri Marine Systems North Am
Fincantieri Marine Systems North America, Inc. Dba Fincantieri Marine Systems North Am (USA)
No interchangeability data on file.
Other items in FSC 4310 — Compressors and Vacuum Pumps
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4310-00-000-0050
COMPRESSOR UNIT,RECIPROCATING
4310-00-001-0059
4310-00-001-0059 · Item name not on file
4310-00-001-2044
MOUNTING PAD,TANK,PRESSURE
4310-00-001-3477
PARTS KIT,VACUUM PUMP
4310-00-001-3493
VACUUM PUMP,ROTARY
4310-00-001-6194
4310-00-001-6194 · Item name not on file
4310-00-001-6381
4310-00-001-6381 · Item name not on file
4310-00-001-7755
PARTS KIT,VACUUM PUMP
Frequently Asked Questions
What is NSN 4310-01-646-5991?
NSN 4310-01-646-5991 is a Heater,diffusion Vacuum Pump,ele, manufactured by Fincantieri Marine Systems North America, Inc. Dba Fincantieri Marine Systems North Am, classified under FSC 4310, Compressors and Vacuum Pumps. Status: active.
What part numbers are listed for NSN 4310-01-646-5991?
NSN 4310-01-646-5991 has 1 manufacturer part number on file: WLR121 (Fincantieri Marine Systems North America, Inc. Dba Fincantieri Marine Systems North Am).
Is NSN 4310-01-646-5991 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.