The Shaft,straight, cataloged under National Stock Number 3040-01-077-5261, 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 12 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 | 3040-01-077-5261 |
| Primary Part Number | 12253975 |
| Item Name | Shaft,straight |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Surface Finish | 250.0 MICROINCHES |
| First End Pitch Diameter | 1.4380 INCHES NOMINAL IN |
| First End Diameter | 1.5000 INCHES NOMINAL IN |
| First End Spline Major Diameter | 1.4780 INCHES NOMINAL IN |
| First End Style | SPLINED (INVOLUTE) |
| Material Document and Classification | ASTM A519 ASSN STD ALL MATERIAL RESPONSES |
| First End Pressure Angle | 30.0 DEGREES NOMINAL |
| First End Spline Length | 6.000 INCHES NOMINAL IN |
| First End Spline Quantity | 23 |
| End Similarity | IDENTICAL |
| First End Spline Minor Diameter | 1.3390 INCHES NOMINAL IN |
| Material | STEEL COMP 1022 OR STEEL COMP 1035 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 12253975 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 3040-01-077-5261 is a Shaft,straight, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-077-5261 has 1 manufacturer part number on file: 12253975 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12253975: Surface Finish: 250.0 MICROINCHES; First End Pitch Diameter: 1.4380 INCHES NOMINAL IN; First End Diameter: 1.5000 INCHES NOMINAL IN; First End Spline Major Diameter: 1.4780 INCHES NOMINAL IN. 12 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.
NSN 3040-01-077-5261 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.