The Shaft,shouldered, cataloged under National Stock Number 3040-01-075-4977, 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 14 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 | 3040-01-075-4977 |
| Primary Part Number | 12268045 |
| 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 | 4 |
| First End Diameter | 4.9650 INCHES MINIMUM AND 5.0000 INCHES MAXIMUM IN |
| First End Spline Major Diameter | 4.9650 INCHES MINIMUM AND 5.0000 INCHES MAXIMUM IN |
| Largest Step Diameter | 6.300 INCHES NOMINAL IN |
| First End Style | CIRCULAR GROOVED AND SPLINED (STRAIGHT) |
| First End Spline Length | 6.000 INCHES NOMINAL IN |
| First End Spline Quantity | 39 |
| End Similarity | NOT IDENTICAL |
| First End Distance From End to Groove | 11.6000 INCHES NOMINAL IN |
| First End Groove Diameter | 4.9650 INCHES MINIMUM AND 5.0000 INCHES MAXIMUM IN |
| Test Data Document | 19207-12268045 DRAWING (THIS IS THE BASIC GOVERNING DRAWING, SUCH AS A CONTRACTOR DRAWING, ORIGINAL EQUIPMENT MANUFACTURER DRAWING, ETC.; EXCLUDES ANY SPECIFICATION, STANDARD OR OTHER DOCUMENT THAT MAY BE REFERENCED IN A BASIC GOVERNING DRAWING) |
| First End Spline Minor Diameter | 4.6080 INCHES NOMINAL IN |
| Material | STEEL COMP 4340 |
| First End Groove Width | 0.5000 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 |
NSN 3040-01-075-4977 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 3040-01-075-4977 has 2 manufacturer part numbers on file: 12268045 (U S Army Tank Automotive Command Amsta-Im-Mm), DAX13071 (Allison Transmission Inc Dba Allison Transmission, Inc).
Key specifications for 12268045: Step Quantity: 4; First End Diameter: 4.9650 INCHES MINIMUM AND 5.0000 INCHES MAXIMUM IN; First End Spline Major Diameter: 4.9650 INCHES MINIMUM AND 5.0000 INCHES MAXIMUM IN; Largest Step Diameter: 6.300 INCHES NOMINAL IN. 14 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.