The Shaft,shouldered, cataloged under National Stock Number 3040-01-655-6652, 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 10 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-655-6652 |
| Primary Part Number | 12510689 |
| 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 Spline Major Diameter | 5.093 INCHES NOMINAL IN |
| Second End Diameter | 1.3771 INCHES MINIMUM AND 1.3776 INCHES MAXIMUM IN |
| First End Hole Depth | 1.00 INCHES MAXIMUM IN |
| Material Document and Classification | ASTM A668 ASSN STD SINGLE MATERIAL RESPONSE |
| First End Spline Quantity | 40 |
| End Similarity | NOT IDENTICAL |
| First End Hole Diameter | 0.780 INCHES MAXIMUM IN |
| First End Spline Minor Diameter | 4.834 INCHES MINIMUM IN |
| Material | STEEL COMP 4340 |
| 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 |
|---|---|
| 12510689 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 3040-01-655-6652 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 3040-01-655-6652 has 1 manufacturer part number on file: 12510689 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12510689: Step Quantity: 4; First End Spline Major Diameter: 5.093 INCHES NOMINAL IN; Second End Diameter: 1.3771 INCHES MINIMUM AND 1.3776 INCHES MAXIMUM IN; First End Hole Depth: 1.00 INCHES MAXIMUM IN. 10 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.