The Shaft,shouldered, cataloged under National Stock Number 3040-01-430-4130, 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 27 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-430-4130 |
| Primary Part Number | 12543756 |
| 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 | 25.0 MICROINCHES |
| Step Quantity | 7 |
| First End Diameter | 3.0023 INCHES NOMINAL IN |
| First End Spline Major Diameter | 3.0023 INCHES NOMINAL IN |
| Second End Diameter | 3.0023 INCHES NOMINAL IN |
| Largest Step Diameter | 3.149 INCHES NOMINAL IN |
| Second End Spline Minor Diameter | 2.8350 INCHES NOMINAL IN |
| First End Distance Between First and Second Groove Centers | 1.456 INCHES NOMINAL IN |
| First End Style | TWO CIRCULAR GROOVES, SPLINED AND INTERNALLY THREADED |
| Second End Spline Major Diameter | 3.0023 INCHES NOMINAL IN |
| First End Internal Thread Length | 1.500 INCHES NOMINAL IN |
| Second End Groove Diameter | 2.8100 INCHES NOMINAL IN |
| First End Spline Length | 2.090 INCHES NOMINAL IN |
| First End Spline Quantity | 47 |
| End Similarity | NOT IDENTICAL |
| First End Distance From End to Groove | 0.134 INCHES NOMINAL IN |
| Second End Spline Quantity | 47 |
| Second End Groove Width | 0.1400 INCHES NOMINAL IN |
| Second End Distance From End to Groove | 0.134 INCHES NOMINAL IN |
| First End Groove Diameter | 2.8100 INCHES NOMINAL IN |
| Second End Style | TWO CIRCULAR GROOVES, SPLINED AND INTERNALLY THREADED |
| First End Spline Minor Diameter | 2.8350 INCHES NOMINAL IN |
| Material | STEEL COMP 4340 |
| First End Groove Width | 0.1400 INCHES NOMINAL IN |
| Second End Internal Thread Length | 1.500 INCHES NOMINAL IN |
| Second End Spline Length | 6.410 INCHES NOMINAL IN |
| Second End Distance Between First and Second Groove Centers | 1.456 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 3040-01-430-4130 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 3040-01-430-4130 has 3 manufacturer part numbers on file: 715530 (Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic), 12543756 (U S Army Tank Automotive Command Amsta-Im-Mm), DAX16227 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12543756: Surface Finish: 25.0 MICROINCHES; Step Quantity: 7; First End Diameter: 3.0023 INCHES NOMINAL IN; First End Spline Major Diameter: 3.0023 INCHES NOMINAL IN. 27 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.