The Piston,pump, cataloged under National Stock Number 4320-01-477-0797, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-477-0797 |
| Primary Part Number | 1777783 |
| Item Name | Piston,pump |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| 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 |
|---|---|
| 1777783 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
NSN 4320-01-477-0797 is a Piston,pump, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-477-0797 has 1 manufacturer part number on file: 1777783 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 1777783: End Item Identification: ROLLER,VIBRATOR,SELF-PROPELLED TYPE II CATERPILLER MODEL CS-563D TM5-3895-383 CONTRACT NO.DAAE07-98-C-S007 NSN 3895-01-456-2735 (TYPE II). 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.