The Piston,pump, cataloged under National Stock Number 4320-01-368-1503, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Pacific Consolidated Industries Llc. Government technical data includes 14 specifications, cited from the U.S. Government catalog. 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 | 4320-01-368-1503 |
| Primary Part Number | 790638-001 |
| Item Name | Piston,pump |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Pacific Consolidated Industries Llc |
| Status | ACTIVE |
| Integral Connecting Rod | NOT INCLUDED |
| Retaining Ring Groove | NOT INCLUDED |
| Surface Finish | FINISHED |
| Diameter | 0.490 INCHES MINIMUM AND 0.495 INCHES MAXIMUM IN |
| Pin | NOT INCLUDED |
| Oil Groove | NOT INCLUDED |
| Head Style | HUMP |
| Skirt Bottom Cutaway Feature | NOT INCLUDED |
| Finished Size Designation | STANDARD |
| Ring | NOT INCLUDED |
| Surface Treatment | CHROMIUM |
| Pin Hole Bushing | NOT INCLUDED |
| Material | ALUMINUM ALLOY |
| Skirt Type | SOLID |
| 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 |
|---|---|
| 790638-001 PRIMARY | Pacific Consolidated Industries Llc (USA) |
NSN 4320-01-368-1503 is a Piston,pump, manufactured by Pacific Consolidated Industries Llc, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-368-1503 has 1 manufacturer part number on file: 790638-001 (Pacific Consolidated Industries Llc).
Key specifications for 790638-001: Overall Height: 4.670 INCHES MINIMUM AND 4.690 INCHES MAXIMUM IN; Integral Connecting Rod: NOT INCLUDED; Retaining Ring Groove: NOT INCLUDED; Surface Finish: FINISHED. 14 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.