The Cover,end,lower, cataloged under National Stock Number 4320-01-255-9634, 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 2 specifications, cited from the U.S. Government catalog. The record lists 7 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-255-9634 |
| Primary Part Number | PL-999R0501-C FIND 3Q3 |
| Item Name | Cover,end,lower |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Criticality Code Justification | ZZZY |
| Reference Number Differentiating Characteristics | ITEMS THAT SUPPORT A LEVEL I OR SUBSAFE CRITICAL SYSTEM/COMPONENT THAT HAS UNDERGONE QUALITY ASSURANCE DURING THE ACQUISITION PROCESS AND REQUIRES OBJECTIVE QUALITY EVIDENCE (OQE) TRACEABLE TO PERMANENT MARKING ON THE MATERIAL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| PL-999R0501-C FIND 3Q3 | Naval Inventory Control Point Mechanicsburg (USA) |
| PL-999R0501 FIND 3Q3 | Naval Inventory Control Point Mechanicsburg (USA) |
| PL-999F0937 FN 3Q3 | Naval Inventory Control Point Mechanicsburg (USA) |
| 999F0937 FN 3Q3 | Naval Inventory Control Point Mechanicsburg (USA) |
| PL-999F0937 FN 3 | Circor Naval Solutions Llc Dba Warren Pumps (USA) |
| 999F0937 FN 3 | Circor Naval Solutions Llc Dba Warren Pumps (USA) |
| 691C0002 B51YAQ3 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| PL-999R0501-D FIND 3 | 5/9 Secondary reference Circor Naval Solutions Llc Dba Warren Pumps |
| PL-999R0501-C FIND 3 | 5/1 Secondary reference Circor Naval Solutions Llc Dba Warren Pumps |
| 691C0002 B51YA | 3/1 Design control — primary reference Circor Naval Solutions Llc Dba Warren Pumps |
| PL-999R0501 FIND 3 | 5/1 Secondary reference Circor Naval Solutions Llc Dba Warren Pumps |
NSN 4320-01-255-9634 is a Cover,end,lower, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-255-9634 has 7 manufacturer part numbers on file: PL-999R0501-C FIND 3Q3 (Naval Inventory Control Point Mechanicsburg), PL-999R0501 FIND 3Q3 (Naval Inventory Control Point Mechanicsburg), PL-999F0937 FN 3Q3 (Naval Inventory Control Point Mechanicsburg), 999F0937 FN 3Q3 (Naval Inventory Control Point Mechanicsburg), PL-999F0937 FN 3 (Circor Naval Solutions Llc Dba Warren Pumps) and 2 more.
Key specifications for PL-999R0501-C FIND 3Q3: Criticality Code Justification: ZZZY; Reference Number Differentiating Characteristics: ITEMS THAT SUPPORT A LEVEL I OR SUBSAFE CRITICAL SYSTEM/COMPONENT THAT HAS UNDERGONE QUALITY ASSURANCE DURING THE ACQUISITION PROCESS AND REQUIRES OBJECTIVE QUALITY EVIDENCE (OQE) TRACEABLE TO PERMANENT MARKING ON THE MATERIAL. 2 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.
NSN 4320-01-255-9634 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.