The Shaft,shouldered, cataloged under National Stock Number 3040-00-168-2238, 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 | 3040-00-168-2238 |
| Primary Part Number | 7979313 |
| 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 | 12 |
| First End Diameter | 3.3660 INCHES MINIMUM AND 3.3700 INCHES MAXIMUM IN |
| Largest Step Diameter | 3.565 INCHES MINIMUM AND 3.570 INCHES MAXIMUM IN |
| First End External Thread Length | 1.312 INCHES NOMINAL IN |
| First End Style | EXTERNALLY THREADED AND FLAT KEYWAY |
| First End Keyway Depth | 0.375 INCHES NOMINAL IN |
| End Similarity | IDENTICAL |
| Material | STEEL COMP 4140 OR STEEL COMP 8640 |
| External Keyway Length | 1.000 INCHES NOMINAL FIRST END IN |
| First End Keyway Width | 0.4375 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 |
| Part Number | Manufacturer |
|---|---|
| 7979313 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 3040-00-168-2238 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 3040-00-168-2238 has 1 manufacturer part number on file: 7979313 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 7979313: Step Quantity: 12; First End Diameter: 3.3660 INCHES MINIMUM AND 3.3700 INCHES MAXIMUM IN; Largest Step Diameter: 3.565 INCHES MINIMUM AND 3.570 INCHES MAXIMUM IN; First End External Thread Length: 1.312 INCHES NOMINAL 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.