The Shaft,shouldered, cataloged under National Stock Number 3040-01-243-3829, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-243-3829 |
| Primary Part Number | 12349918 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Step Quantity | 3 |
| First End Diameter | 0.6235 INCHES NOMINAL IN |
| First End Distance From Keyway Center to End | 0.778 INCHES NOMINAL IN |
| Second End Diameter | 1.3750 INCHES NOMINAL IN |
| Largest Step Diameter | 1.375 INCHES NOMINAL IN |
| First End Style | WOODRUFF KEYWAY |
| End Similarity | NOT IDENTICAL |
| Second End Style | INTERNAL THREADED |
| Material | STEEL COMP 4130 |
| Second End Internal Thread Length | 0.560 INCHES NOMINAL IN |
| External Keyway Length | 0.750 INCHES NOMINAL FIRST END IN |
| First End Keyway Width | 0.1880 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 |
|---|---|
| 12349918 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 12349918 | 8/1 NATO reproduction reference Fnss Savunma Sistemleri Anonim Sirketi |
NSN 3040-01-243-3829 is a Shaft,shouldered, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-243-3829 has 1 manufacturer part number on file: 12349918 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12349918: Step Quantity: 3; First End Diameter: 0.6235 INCHES NOMINAL IN; First End Distance From Keyway Center to End: 0.778 INCHES NOMINAL IN; Second End Diameter: 1.3750 INCHES NOMINAL IN. 12 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.