The Sleeve,shaft,pump, cataloged under National Stock Number 4320-00-522-4091, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Carver Pump Company. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 2 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.
| Parameter | Value |
|---|---|
| NSN | 4320-00-522-4091 |
| Primary Part Number | 2-10B99NM |
| Item Name | Sleeve,shaft,pump |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Carver Pump Company |
| Status | ACTIVE |
| Corner Shape | SQUARE INSIDE RIGHT CORNER |
| Corner Shape | CHAMFERED LEFT FLANGE OUTSIDE RIGHT CORNER |
| Corner Shape | SQUARE LEFT FLANGE BODY CORNER |
| Corner Shape | SQUARE OUTSIDE RIGHT CORNER |
| Corner Shape | SQUARE OUTSIDE LEFT CORNER |
| Corner Shape | SQUARE INSIDE LEFT CORNER |
| Flange Outside Diameter | 1.8750 INCHES NOMINAL IN |
| Body Outside Diameter | 1.5000 INCHES NOMINAL IN |
| Style Designator | SOLID, EXTERNAL FLANGE ONE END |
| Body Inside Diameter | 1.2510 INCHES MINIMUM AND 1.2530 INCHES MAXIMUM IN |
| Flange Width | 0.9375 INCHES NOMINAL IN |
| Material | COPPER 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 |
|---|---|
| H4320-522-4091 | Naval Inventory Control Point Mechanicsburg (USA) |
| 2-10B99NM PRIMARY | Carver Pump Company (USA) |
| Reference | Meaning |
|---|---|
| 2-10B99NM | 5/9 Secondary reference General Signal Corp |
| 756-0057-135 | 5/9 Secondary reference Aurora Pump a Unit of General Signal Corp |
| 2-10B99NM | 5/9 Secondary reference Aurora Pump a Unit of General Signal Corp |
NSN 4320-00-522-4091 is a Sleeve,shaft,pump, manufactured by Carver Pump Company, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-00-522-4091 has 2 manufacturer part numbers on file: H4320-522-4091 (Naval Inventory Control Point Mechanicsburg), 2-10B99NM (Carver Pump Company).
Key specifications for 2-10B99NM: Corner Shape: SQUARE INSIDE RIGHT CORNER; Corner Shape: CHAMFERED LEFT FLANGE OUTSIDE RIGHT CORNER; Corner Shape: SQUARE LEFT FLANGE BODY CORNER; Corner Shape: SQUARE OUTSIDE RIGHT CORNER. 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.