The Shaft,shouldered, cataloged under National Stock Number 3040-01-020-2265, 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 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3040-01-020-2265 |
| Primary Part Number | 12250387 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Surface Finish | 125.0 MICROINCHES |
| Step Quantity | 2 |
| First End Diameter | 0.1850 INCHES MINIMUM AND 0.1880 INCHES MAXIMUM IN |
| Second End Diameter | 0.2500 INCHES NOMINAL IN |
| Largest Step Diameter | 0.250 INCHES NOMINAL IN |
| First End Style | PLAIN |
| Second End Keyway Width | 0.0700 INCHES MINIMUM AND 0.0760 INCHES MAXIMUM IN |
| Material Document and Classification | QQ-S-637 FED SPEC 1ST MATERIAL RESPONSE OR 12L14 ASSN STD 2ND MATERIAL RESPONSE |
| Second End Keyway Depth | 0.046 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| Second End Style | FLAT KEYWAY |
| Material | STEEL COMP 12L14 |
| External Keyway Length | 0.530 INCHES MINIMUM AND 0.580 INCHES MAXIMUM 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 |
|---|---|
| 12250387 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 3040010202265 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
NSN 3040-01-020-2265 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 3040-01-020-2265 has 1 manufacturer part number on file: 12250387 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12250387: Surface Finish: 125.0 MICROINCHES; Step Quantity: 2; First End Diameter: 0.1850 INCHES MINIMUM AND 0.1880 INCHES MAXIMUM IN; Second End Diameter: 0.2500 INCHES NOMINAL IN. 13 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.