The Sleeve,shaft,pump, cataloged under National Stock Number 4320-01-045-3555, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Pentair Pump Group, Inc. Dba Fairbanks Morse Pump. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4320-01-045-3555 |
| Primary Part Number | K4B14C |
| Item Name | Sleeve,shaft,pump |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Pentair Pump Group, Inc. Dba Fairbanks Morse Pump |
| Status | ACTIVE |
| Surface Finish | 125.0 MICROINCHES LEFT END SURFACE |
| Surface Finish | 125.0 MICROINCHES RIGHT END SURFACE |
| Surface Finish | 63.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY |
| Surface Finish | 63.0 MICROINCHES BODY |
| Corner Shape | SQUARE ALL CORNERS |
| Body Outside Diameter | 2.2450 INCHES MINIMUM AND 2.2460 INCHES MAXIMUM IN |
| Hardness Rating | 265.0 BRINELL STANDARD NOMINAL OVERALL |
| Style Designator | SOLID, PLAIN, NO OUTSIDE FLANGES |
| Material Document and Classification | QQ-N-286 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Body Inside Diameter | 1.6865 INCHES MINIMUM AND 1.6880 INCHES MAXIMUM IN |
| Material | NICKEL ALLOY OVERALL |
| Keyway Dimension | 0.5625 INCHES NOMINAL INTERNAL KEYWAY WIDTH IN |
| 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 |
|---|---|
| K4B14C PRIMARY | Pentair Pump Group, Inc. Dba Fairbanks Morse Pump (USA) |
| L2249 | Rps-Fl, Inc. Dba Rps Inc (USA) |
| 55-22335-20A | Euramco Safety Inc (USA) |
| Reference | Meaning |
|---|---|
| CS-4320-SV-0746 | D/9 Drawing number reference only Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) |
| 99K4B-H | D/9 Drawing number reference only Pentair Pump Group, Inc. Dba Fairbanks Morse Pump |
NSN 4320-01-045-3555 is a Sleeve,shaft,pump, manufactured by Pentair Pump Group, Inc. Dba Fairbanks Morse Pump, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-045-3555 has 3 manufacturer part numbers on file: K4B14C (Pentair Pump Group, Inc. Dba Fairbanks Morse Pump), L2249 (Rps-Fl, Inc. Dba Rps Inc), 55-22335-20A (Euramco Safety Inc).
1 possible match (shared part number, not a government interchangeability claim): 4320-01-045-3588. Verify interchangeability with system specifications before substitution.
Key specifications for K4B14C: Surface Finish: 125.0 MICROINCHES LEFT END SURFACE; Surface Finish: 125.0 MICROINCHES RIGHT END SURFACE; Surface Finish: 63.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY; Surface Finish: 63.0 MICROINCHES BODY. 12 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.