The Shaft,shouldered, cataloged under National Stock Number 3040-01-373-5698, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Buffaloes Fire Pump Inc. Dba R B Pump Co. Government technical data includes 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-373-5698 |
| Primary Part Number | D-4028-6-1401 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Buffaloes Fire Pump Inc. Dba R B Pump Co |
| Status | ACTIVE |
| Material Document and Classification | QQ-N-281 MIL SPEC SINGLE MATERIAL RESPONSE |
| End Similarity | NOT IDENTICAL |
| 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 |
|---|---|
| D-4028-1-6-1401 | Buffaloes Fire Pump Inc. Dba R B Pump Co (USA) |
| D-4028-6-1401 PRIMARY | Buffaloes Fire Pump Inc. Dba R B Pump Co (USA) |
| D-4028-RB-6-1401 | Buffaloes Fire Pump Inc. Dba R B Pump Co (USA) |
| Reference | Meaning |
|---|---|
| D-4028-RB-6 | 5/9 Secondary reference Buffaloes Fire Pump Inc. Dba R B Pump Co |
| D-4028 | D/9 Drawing number reference only Buffaloes Fire Pump Inc. Dba R B Pump Co |
NSN 3040-01-373-5698 is a Shaft,shouldered, manufactured by Buffaloes Fire Pump Inc. Dba R B Pump Co, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-373-5698 has 3 manufacturer part numbers on file: D-4028-1-6-1401 (Buffaloes Fire Pump Inc. Dba R B Pump Co), D-4028-6-1401 (Buffaloes Fire Pump Inc. Dba R B Pump Co), D-4028-RB-6-1401 (Buffaloes Fire Pump Inc. Dba R B Pump Co).
Key specifications for D-4028-6-1401: Material Document and Classification: QQ-N-281 MIL SPEC SINGLE MATERIAL RESPONSE; End Similarity: NOT IDENTICAL; End Item Identification: R-B PUMP,REDDY-BUFFALOES PUMP INC,286TCN FRAME SIZE MOTOR; Material: NICKEL ALLOY. 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.