The Pump Air Turb Mk21, cataloged under National Stock Number 4320-01-657-5267, 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 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Pump Air Turb Mk21 |
| FSC / FSG | 4320 — Power and Hand Pumps (FSG 43) |
| Manufacturers | Naval Inventory Control Point Mechanicsburg (CAGE 03950) |
| Parameter | Value |
|---|---|
| NSN | 4320-01-657-5267 |
| Primary Part Number | 19-87-2000M1PAL1 |
| Item Name | Pump Air Turb Mk21 |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 19-87-2000M1PAL1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 754-8207763 ASSY 98L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 754-7286060-26L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 19-87-2000M1PA | 5/1 Secondary reference U.S. Government activity |
| 754-8207763 ASSY 98 | 3/1 Design control — primary reference Naval Sea Systems Command |
| 754-7286060-26 | 5/1 Secondary reference Naval Sea Systems Command |
NSN 4320-01-657-5267 is a Pump Air Turb Mk21, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-657-5267 has 3 manufacturer part numbers on file: 19-87-2000M1PAL1 (Naval Inventory Control Point Mechanicsburg), 754-8207763 ASSY 98L1 (Naval Inventory Control Point Mechanicsburg), 754-7286060-26L1 (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 4320-01-657-5267 has DEMIL Code D. 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.