NSN 4320-00-112-0044 · NIIN 001120044 · Part number U-21641
Siemens Water Technologies Corp. Div Wallace & Tiernan Products · FSC 4320 — Power and Hand Pumps · FSG 43 — Pumps and Compressors · CAGE 79172
Government record, cited
NSN 4320-00-112-0044 — this item is cataloged by the U.S. Government under National Stock Number 4320-00-112-0044. Manufacturer of record part number: U-21641.
Also searched as4320-00-112-0044 ·
4320001120044 ·
NIIN 001120044 ·
00-112-0044 ·
FSC 4320 Power and Hand Pumps · CAGE 79172 · U-21641 · U18859
Nearby stock numbers← 4320-00-112-0024
·
4320-00-112-0645 Pump Unit, Centrifugal →
Features
Main Connection — FSC 4320
1 manufacturer part number on file
Manufacturer of record: Siemens Water Technologies Corp. Div Wallace & Tiernan Products
Identification
NSN: 4320-00-112-0044
NIIN: 001120044
FSC: 4320 — Power and Hand Pumps
FSG: 43 — Pumps and Compressors
Primary part number: U-21641
Manufacturer: Siemens Water Technologies Corp. Div Wallace & Tiernan Products
General Description
The Main Connection, cataloged under National Stock Number 4320-00-112-0044, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Siemens Water Technologies Corp. Div Wallace & Tiernan Products. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
Catalog Facts
Item Name
Main Connection
FSC / FSG
4320 — Power and Hand Pumps (FSG 43)
Manufacturers
Siemens Water Technologies Corp. Div Wallace & Tiernan Products (CAGE 79172)
Technical Specifications
Parameter
Value
NSN
4320-00-112-0044
Primary Part Number
U-21641
Item Name
Main Connection
FSC / FSG
4320 / 43 — Power and Hand Pumps
Manufacturer
Siemens Water Technologies Corp. Div Wallace & Tiernan Products
Siemens Water Technologies Corp. Div Wallace & Tiernan Products (USA)
Reference documents
Reference
Meaning
U18859
5/9Secondary reference
Siemens Water Technologies Corp. Div Wallace & Tiernan Products
No interchangeability data on file.
Other items in FSC 4320 — Power and Hand Pumps
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4320-00-001-1633
4320-00-001-1633 · Item name not on file
4320-00-001-2628
RETAINER AND PIN
4320-00-001-2629
HOUSING AND PIN
4320-00-001-2630
PUMP,CENTRIFUGAL
4320-00-001-2631
4320-00-001-2631 · Item name not on file
4320-00-001-2632
4320-00-001-2632 · Item name not on file
4320-00-001-3377
4320-00-001-3377 · Item name not on file
4320-00-001-3384
4320-00-001-3384 · Item name not on file
Frequently Asked Questions
What is NSN 4320-00-112-0044?
NSN 4320-00-112-0044 is a Main Connection, manufactured by Siemens Water Technologies Corp. Div Wallace & Tiernan Products, classified under FSC 4320, Power and Hand Pumps. Status: active.
What part numbers are listed for NSN 4320-00-112-0044?
NSN 4320-00-112-0044 has 1 manufacturer part number on file: U-21641 (Siemens Water Technologies Corp. Div Wallace & Tiernan Products).
Is NSN 4320-00-112-0044 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.