The Shaft,shouldered, cataloged under National Stock Number 3040-01-270-5855, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Carver Pump Company. Government technical data includes 6 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through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-270-5855 |
| Primary Part Number | 006-7100028-302 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Carver Pump Company |
| Status | ACTIVE |
| Step Quantity | 7 |
| First End Style | FLAT KEYWAY |
| Material Document and Classification | QQ-N-281 FED STD SINGLE MATERIAL RESPONSE |
| End Similarity | NOT IDENTICAL |
| Second End Style | EXTERNAL THREADED |
| Material | NICKEL ALLOY |
| 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 |
|---|---|
| 006-7100028-302 PRIMARY | Carver Pump Company (USA) |
| 728-0028-237 PRIMARY | Krobach Mfg. Corp. Dba Krobach Manufacturing Corp (USA) |
| Reference | Meaning |
|---|---|
| 728-0028-237 | 5/9 Secondary reference Carver Pump Company |
| 728-0028-237 | 5/9 Secondary reference Aurora Pump a Unit of General Signal Corp |
| AB7220106-000 PIECE 6 | 5/9 Secondary reference Aurora Pump a Unit of General Signal Corp |
| 006-7100-028-302 REV H | 5/9 Secondary reference Carver Pump Company |
| AB7220106-000 PIECE 6 | 5/9 Secondary reference Carver Pump Company |
| AB7220106-000 | D/9 Drawing number reference only Aurora Pump a Unit of General Signal Corp |
| 006-7100028-237 | 5/9 Secondary reference Carver Pump Company |
| 728-0028-235 | 5/9 Secondary reference Aurora Pump a Unit of General Signal Corp |
NSN 3040-01-270-5855 is a Shaft,shouldered, manufactured by Carver Pump Company, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-270-5855 has 2 manufacturer part numbers on file: 006-7100028-302 (Carver Pump Company), 728-0028-237 (Krobach Mfg. Corp. Dba Krobach Manufacturing Corp).
1 possible match (shared part number, not a government interchangeability claim): 4320-01-353-6245. Verify interchangeability with system specifications before substitution.
Key specifications for 006-7100028-302: Step Quantity: 7; First End Style: FLAT KEYWAY; Material Document and Classification: QQ-N-281 FED STD SINGLE MATERIAL RESPONSE; End Similarity: NOT IDENTICAL. 6 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.