The Shaft,shouldered, cataloged under National Stock Number 3040-00-920-7549, 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 17 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 | 3040-00-920-7549 |
| Primary Part Number | 7954474 |
| 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 | 2 |
| First End Diameter | 2.0985 INCHES MINIMUM AND 2.1020 INCHES MAXIMUM IN |
| First End Spline Major Diameter | 2.0985 INCHES MINIMUM AND 2.1020 INCHES MAXIMUM IN |
| Second End Diameter | 2.1230 INCHES MINIMUM AND 2.1250 INCHES MAXIMUM IN |
| Largest Step Diameter | 2.123 INCHES MINIMUM AND 2.125 INCHES MAXIMUM IN |
| Second End Distance From Keyway Center to End | 3.898 INCHES NOMINAL IN |
| First End Style | SPLINED (STRAIGHT) |
| Second End Keyway Width | 0.4970 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN |
| Second End Distance Between Keyway Centers | 19.470 INCHES NOMINAL IN |
| Material Document and Classification | QQ-S-624 FED SPEC SINGLE MATERIAL RESPONSE |
| First End Spline Length | 1.000 INCHES NOMINAL IN |
| First End Spline Quantity | 16 |
| End Similarity | NOT IDENTICAL |
| Second End Style | TWO WOODRUFF KEYWAYS |
| First End Spline Minor Diameter | 1.8550 INCHES MINIMUM AND 1.8750 INCHES MAXIMUM IN |
| Material | STEEL COMP 4140 OR STEEL COMP 8640 OR STEEL COMP 8740 OR STEEL COMP 5140 |
| External Keyway Length | 3.265 INCHES NOMINAL 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 |
|---|---|
| 7954474 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 3040-00-920-7549 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 3040-00-920-7549 has 1 manufacturer part number on file: 7954474 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 7954474: Step Quantity: 2; First End Diameter: 2.0985 INCHES MINIMUM AND 2.1020 INCHES MAXIMUM IN; First End Spline Major Diameter: 2.0985 INCHES MINIMUM AND 2.1020 INCHES MAXIMUM IN; Second End Diameter: 2.1230 INCHES MINIMUM AND 2.1250 INCHES MAXIMUM IN. 17 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.