The Pump,rotary, cataloged under National Stock Number 4320-01-280-8136, 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. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4320-01-280-8136 |
| Primary Part Number | PL-D4503Q3 |
| Item Name | Pump,rotary |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Reference Number Differentiating Characteristics | ITEM THAT SUPPORTS A LEVEL 1 OR SUBSAFE CRITICAL SYSTEM THAT HAS UNDERGONE QUALITY ASSURANCE DURING THE ACQUISITION PROCESS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| PL-D4503Q3 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| PL-D4503 | 3/1 Design control — primary reference Circor Naval Solutions Llc Dba Warren Pumps |
NSN 4320-01-280-8136 is a Pump,rotary, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-280-8136 has 1 manufacturer part number on file: PL-D4503Q3 (Naval Inventory Control Point Mechanicsburg).
1 possible match (shared part number, not a government interchangeability claim): 5330-01-661-7532. Verify interchangeability with system specifications before substitution.
Key specifications for PL-D4503Q3: Reference Number Differentiating Characteristics: ITEM THAT SUPPORTS A LEVEL 1 OR SUBSAFE CRITICAL SYSTEM THAT HAS UNDERGONE QUALITY ASSURANCE DURING THE ACQUISITION PROCESS. 1 specification is 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.
NSN 4320-01-280-8136 has DEMIL Code B. 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.