The Piston,pump, cataloged under National Stock Number 4320-01-301-8091, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Bae Systems Tactical Vehicle Systems Lp Dba Data Systems International Inc. Government technical data includes 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-301-8091 |
| Primary Part Number | 28183 |
| Item Name | Piston,pump |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Bae Systems Tactical Vehicle Systems Lp Dba Data Systems International Inc |
| Status | ACTIVE |
| Integral Connecting Rod | NOT INCLUDED |
| Retaining Ring Groove | INCLUDED |
| Material | STEEL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 28183 | Bae Systems Tactical Vehicle Systems Lp Dba Data Systems International Inc (USA) |
| 28183 | Amz Alabama Inc. (USA) |
| Reference | Meaning |
|---|---|
| 28183 | 3/9 Design control — primary reference Bosch Automotive Service Solutions Inc. |
| 251510 | 5/9 Secondary reference Spx Fluid Power |
NSN 4320-01-301-8091 is a Piston,pump, manufactured by Bae Systems Tactical Vehicle Systems Lp Dba Data Systems International Inc, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-301-8091 has 2 manufacturer part numbers on file: 28183 (Bae Systems Tactical Vehicle Systems Lp Dba Data Systems International Inc), 28183 (Amz Alabama Inc.).
2 possible matches (shared part number, not a government interchangeability claim): 1730-01-359-2491, 5315-01-395-3512. Verify interchangeability with system specifications before substitution.
Key specifications for 28183: Integral Connecting Rod: NOT INCLUDED; Retaining Ring Groove: INCLUDED; End Item Identification: 4320-00-055-2639 AIR/HYDRAULIC PUMP; Material: STEEL. 3 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
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.