The Shaft,straight, cataloged under National Stock Number 3040-00-753-9856, 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 5 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-753-9856 |
| Primary Part Number | 7539856 |
| Item Name | Shaft,straight |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| First End Diameter | 3.4570 INCHES MINIMUM AND 3.4620 INCHES MAXIMUM IN |
| Second End Diameter | 3.2570 INCHES MINIMUM AND 3.2620 INCHES MAXIMUM IN |
| First End Style | PLAIN |
| End Similarity | IDENTICAL |
| Material | STEEL COMP 8640 |
| 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 |
|---|---|
| 7539856 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 6764632 | 5/9 Secondary reference Spalla Inc |
| 6764632 | 5/9 Secondary reference General Motors Corp |
| 2520007539856 | 5/9 Secondary reference E.c.a Etablissement Centrald'approvisionnement Des Forces Armee |
| 6764632 | 5/9 Secondary reference Allison Transmission Inc Dba Allison Transmission, Inc |
NSN 3040-00-753-9856 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 3040-00-753-9856 has 1 manufacturer part number on file: 7539856 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 7539856: First End Diameter: 3.4570 INCHES MINIMUM AND 3.4620 INCHES MAXIMUM IN; Second End Diameter: 3.2570 INCHES MINIMUM AND 3.2620 INCHES MAXIMUM IN; First End Style: PLAIN; Overall Length: 25.062 INCHES NOMINAL IN. 5 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.