The Piston,pump, cataloged under National Stock Number 4320-01-290-1973, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. Government technical data includes 4 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-290-1973 |
| Item Name | Piston,pump |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Status | ACTIVE |
| Integral Connecting Rod | NOT INCLUDED |
| Pin | NOT INCLUDED |
| Ring | NOT INCLUDED |
| Pin Hole Bushing | NOT INCLUDED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| S-216-10-60 | 3/9 Design control — primary reference U.S. Government activity |
| 77890-1 ITEM 2 | 5/9 Secondary reference U.S. Government activity |
| 77890-1 | D/9 Drawing number reference only U.S. Government activity |
NSN 4320-01-290-1973 is a Piston,pump, classified under FSC 4320, Power and Hand Pumps. Status: active.
Key specifications for 4320-01-290-1973: Integral Connecting Rod: NOT INCLUDED; Pin: NOT INCLUDED; Ring: NOT INCLUDED; Pin Hole Bushing: NOT INCLUDED. 4 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.