The Shaft,shouldered, cataloged under National Stock Number 3040-01-212-7603, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Lidgerwood Manufacturing Company Dba Lidgerwood Manufacturing Co Div Lidgerwood Manufacuring Co. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-212-7603 |
| Primary Part Number | 157741-13 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Lidgerwood Manufacturing Company Dba Lidgerwood Manufacturing Co Div Lidgerwood Manufacuring Co |
| Status | ACTIVE |
| Step Quantity | 8 |
| First End Diameter | 3.9390 INCHES MINIMUM AND 3.9400 INCHES MAXIMUM IN |
| Second End Diameter | 3.8770 INCHES MINIMUM AND 3.8780 INCHES MAXIMUM IN |
| Largest Step Diameter | 4.625 INCHES NOMINAL IN |
| First End Style | PLAIN |
| Second End Keyway Width | 1.0000 INCHES NOMINAL IN |
| Second End Keyway Depth | 0.500 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| Second End Style | FLAT KEYWAY |
| Material | STEEL COMP 4140 |
| External Keyway Length | 4.875 INCHES NOMINAL SECOND END 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 |
|---|---|
| 157741-13 PRIMARY | Lidgerwood Manufacturing Company Dba Lidgerwood Manufacturing Co Div Lidgerwood Manufacuring Co (USA) |
| Reference | Meaning |
|---|---|
| 157741 | D/9 Drawing number reference only Lidgerwood Manufacturing Company Dba Lidgerwood Manufacturing Co Div Lidgerwood Manufacuring Co |
NSN 3040-01-212-7603 is a Shaft,shouldered, manufactured by Lidgerwood Manufacturing Company Dba Lidgerwood Manufacturing Co Div Lidgerwood Manufacuring Co, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-212-7603 has 1 manufacturer part number on file: 157741-13 (Lidgerwood Manufacturing Company Dba Lidgerwood Manufacturing Co Div Lidgerwood Manufacuring Co).
1 possible match (shared part number, not a government interchangeability claim): 5998-01-438-1475. Verify interchangeability with system specifications before substitution.
Key specifications for 157741-13: Step Quantity: 8; First End Diameter: 3.9390 INCHES MINIMUM AND 3.9400 INCHES MAXIMUM IN; Second End Diameter: 3.8770 INCHES MINIMUM AND 3.8780 INCHES MAXIMUM IN; Largest Step Diameter: 4.625 INCHES NOMINAL IN. 11 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.