The Sleeve,shaft,pump, cataloged under National Stock Number 4320-01-441-4985, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Alfred Conhagen, Inc.. Government technical data includes 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4320-01-441-4985 |
| Primary Part Number | RR-1768 |
| Item Name | Sleeve,shaft,pump |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Alfred Conhagen, Inc. |
| Status | ACTIVE |
| Style Designator | SOLID, PLAIN, NO OUTSIDE FLANGES, INTERNAL FLANGE ONE END |
| Material Document and Classification | QQ-N-286, CLASS A-FR-2 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Material | NICKEL ALLOY K-500 OVERALL |
| 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 |
|---|---|
| RR-1768 PRIMARY | Alfred Conhagen, Inc. (USA) |
| Reference | Meaning |
|---|---|
| PL-1768 PIECE 5 | 5/9 Secondary reference Alfred Conhagen, Inc. |
| PL-1768 | D/9 Drawing number reference only Alfred Conhagen, Inc. |
NSN 4320-01-441-4985 is a Sleeve,shaft,pump, manufactured by Alfred Conhagen, Inc., classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-441-4985 has 1 manufacturer part number on file: RR-1768 (Alfred Conhagen, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 4320-01-441-4988. Verify interchangeability with system specifications before substitution.
Key specifications for RR-1768: Style Designator: SOLID, PLAIN, NO OUTSIDE FLANGES, INTERNAL FLANGE ONE END; Material Document and Classification: QQ-N-286, CLASS A-FR-2 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; End Item Identification: SPRUANCE CLASS LHD (963); Material: NICKEL ALLOY K-500 OVERALL. 3 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.