The Shaft,shouldered, cataloged under National Stock Number 3040-01-044-0892, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Pentair Pump Group, Inc. Dba Fairbanks Morse Pump. Government technical data includes 10 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-044-0892 |
| Primary Part Number | K4B4A |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Pentair Pump Group, Inc. Dba Fairbanks Morse Pump |
| Status | ACTIVE |
| Second End External Thread Length | 1.062 INCHES NOMINAL IN |
| Step Quantity | 12 |
| First End Diameter | 1.1250 INCHES NOMINAL IN |
| Second End Diameter | 1.3750 INCHES NOMINAL IN |
| Largest Step Diameter | 2.124 INCHES NOMINAL IN |
| First End External Thread Length | 1.500 INCHES NOMINAL IN |
| First End Style | EXTERNAL THREADED |
| End Similarity | NOT IDENTICAL |
| Second End Style | EXTERNAL THREADED |
| Material | STEEL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 3040-01-044-0892 is a Shaft,shouldered, manufactured by Pentair Pump Group, Inc. Dba Fairbanks Morse Pump, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-044-0892 has 2 manufacturer part numbers on file: K4B4A (Pentair Pump Group, Inc. Dba Fairbanks Morse Pump), L-2257 (Rps-Fl, Inc. Dba Rps Inc).
Key specifications for K4B4A: Second End External Thread Length: 1.062 INCHES NOMINAL IN; Step Quantity: 12; First End Diameter: 1.1250 INCHES NOMINAL IN; Second End Diameter: 1.3750 INCHES NOMINAL IN. 10 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.