The Spring Plunger, cataloged under National Stock Number 4320-01-684-9140, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Spring Plunger |
| FSC / FSG | 4320 — Power and Hand Pumps (FSG 43) |
| Manufacturers | Naval Inventory Control Point Mechanicsburg (CAGE 03950) |
| Parameter | Value |
|---|---|
| NSN | 4320-01-684-9140 |
| Primary Part Number | 8599502 ITEM 1D5 |
| Item Name | Spring Plunger |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 8599502 ITEM 1D5 | Naval Inventory Control Point Mechanicsburg (USA) |
| 8599503-001D5 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 8599503-001 | 5/1 Secondary reference Naval Sea Systems Command |
| 8599502 ITEM 1 | 3/1 Design control — primary reference Naval Sea Systems Command |
NSN 4320-01-684-9140 is a Spring Plunger, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-684-9140 has 2 manufacturer part numbers on file: 8599502 ITEM 1D5 (Naval Inventory Control Point Mechanicsburg), 8599503-001D5 (Naval Inventory Control Point Mechanicsburg).
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 4320-01-684-9140 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.