The Shaft,shouldered, cataloged under National Stock Number 3040-01-121-2926, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Euramco Safety Inc. Government technical data includes 18 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-121-2926 |
| Primary Part Number | 55-22045-15 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Euramco Safety Inc |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES |
| Second End External Thread Length | 0.5625 INCHES NOMINAL IN |
| Step Quantity | 9 |
| First End Diameter | 0.7810 INCHES NOMINAL IN |
| Second End Diameter | 1.1719 INCHES NOMINAL IN |
| Largest Step Diameter | 1.563 INCHES NOMINAL IN |
| First End External Thread Length | 0.6875 INCHES NOMINAL IN |
| First End Style | EXTERNALLY THREADED AND FLAT KEYWAY |
| Second End Keyway Width | 0.1875 INCHES NOMINAL IN |
| Material Document and Classification | QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE |
| First End Keyway Depth | 0.0937 INCHES NOMINAL IN |
| Second End Keyway Depth | 0.0937 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| Second End Style | EXTERNALLY THREADED AND FLAT KEYWAY |
| Material | NICKEL ALLOY |
| External Keyway Length | 0.625 INCHES NOMINAL SECOND END IN |
| External Keyway Length | 0.6875 INCHES NOMINAL FIRST END IN |
| First End Keyway Width | 0.1875 INCHES NOMINAL 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 |
|---|---|
| 99G3B-D PIECE4 | Pentair Pump Group, Inc. Dba Fairbanks Morse Pump (USA) |
| 55-22045-15 PRIMARY | Euramco Safety Inc (USA) |
| D4B4T PRIMARY | Pentair Pump Group, Inc. Dba Fairbanks Morse Pump (USA) |
| Reference | Meaning |
|---|---|
| 99G3B-D | D/9 Drawing number reference only Pentair Pump Group, Inc. Dba Fairbanks Morse Pump |
| D4B4T | 5/9 Secondary reference Ships Parts Inc |
NSN 3040-01-121-2926 is a Shaft,shouldered, manufactured by Euramco Safety Inc, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-121-2926 has 3 manufacturer part numbers on file: 99G3B-D PIECE4 (Pentair Pump Group, Inc. Dba Fairbanks Morse Pump), 55-22045-15 (Euramco Safety Inc), D4B4T (Pentair Pump Group, Inc. Dba Fairbanks Morse Pump).
2 possible matches (shared part number, not a government interchangeability claim): 4320-01-297-5171, 4320-01-298-3252. Verify interchangeability with system specifications before substitution.
Key specifications for 55-22045-15: Surface Finish: 32.0 MICROINCHES; Second End External Thread Length: 0.5625 INCHES NOMINAL IN; Step Quantity: 9; First End Diameter: 0.7810 INCHES NOMINAL IN. 18 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.