The Sleeve,shaft,pump, cataloged under National Stock Number 4320-00-024-4499, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic. Government technical data includes 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-00-024-4499 |
| Primary Part Number | B1968A |
| Item Name | Sleeve,shaft,pump |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic |
| Status | ACTIVE |
| Corner Shape | SQUARE ALL CORNERS |
| Body Outside Diameter | 2.0000 INCHES NOMINAL IN |
| Style Designator | SOLID, PLAIN, NO OUTSIDE FLANGES |
| Body Inside Diameter | 0.7660 INCHES NOMINAL IN |
| Material | STEEL 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 |
|---|---|
| B1968A PRIMARY | Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (USA) |
| Reference | Meaning |
|---|---|
| B1968 | 5/9 Secondary reference Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic |
NSN 4320-00-024-4499 is a Sleeve,shaft,pump, manufactured by Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-00-024-4499 has 1 manufacturer part number on file: B1968A (Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic).
Key specifications for B1968A: Corner Shape: SQUARE ALL CORNERS; Body Outside Diameter: 2.0000 INCHES NOMINAL IN; Style Designator: SOLID, PLAIN, NO OUTSIDE FLANGES; Overall Length: 1.2340 INCHES NOMINAL IN. 5 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.