The Shaft,shouldered, cataloged under National Stock Number 3040-01-421-1612, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Timken Gears & Services Inc. Div Philadelphia Gear. Government technical data includes 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-421-1612 |
| Primary Part Number | 748C372 PIECE 7 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Timken Gears & Services Inc. Div Philadelphia Gear |
| Status | ACTIVE |
| Largest Step Diameter | 3.4850 INCHES MINIMUM AND 3.4900 INCHES MAXIMUM IN |
| First End Style | EXTERNAL THREADED |
| End Similarity | NOT IDENTICAL |
| 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 |
|---|---|
| 748C372 PIECE 7 PRIMARY | Timken Gears & Services Inc. Div Philadelphia Gear (USA) |
| 745C871 P6 | Timken Gears & Services Inc. Div Philadelphia Gear (USA) |
| Reference | Meaning |
|---|---|
| 748C372 PIECE 7 | 5/9 Secondary reference General Electric Company |
| 745C871 P6 | 5/9 Secondary reference General Electric Company |
NSN 3040-01-421-1612 is a Shaft,shouldered, manufactured by Timken Gears & Services Inc. Div Philadelphia Gear, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-421-1612 has 2 manufacturer part numbers on file: 748C372 PIECE 7 (Timken Gears & Services Inc. Div Philadelphia Gear), 745C871 P6 (Timken Gears & Services Inc. Div Philadelphia Gear).
Key specifications for 748C372 PIECE 7: Largest Step Diameter: 3.4850 INCHES MINIMUM AND 3.4900 INCHES MAXIMUM IN; First End Style: EXTERNAL THREADED; End Similarity: NOT IDENTICAL; Special Features: KEYWAY LOCATED ON 1ST END. 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.