The Piston,pump, cataloged under National Stock Number 4320-01-210-2756, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Hartmann Controls, Inc Div Hartmann Controls. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-210-2756 |
| Primary Part Number | 28551 |
| Item Name | Piston,pump |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Hartmann Controls, Inc Div Hartmann Controls |
| Status | ACTIVE |
| 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 |
|---|---|
| 28551 PRIMARY | Hartmann Controls, Inc Div Hartmann Controls (USA) |
NSN 4320-01-210-2756 is a Piston,pump, manufactured by Hartmann Controls, Inc Div Hartmann Controls, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-210-2756 has 1 manufacturer part number on file: 28551 (Hartmann Controls, Inc Div Hartmann Controls).
1 possible match (shared part number, not a government interchangeability claim): 6145-01-343-6405. Verify interchangeability with system specifications before substitution.
Key specifications for 28551: End Item Identification: PUMP MODEL 300. 0 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.