The Shaft,shouldered, cataloged under National Stock Number 3040-01-321-8321, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate. Government technical data includes 9 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 | 3040-01-321-8321 |
| Primary Part Number | 12553403 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate |
| Status | ACTIVE |
| Step Quantity | 7 |
| First End Diameter | 0.7430 INCHES NOMINAL IN |
| Largest Step Diameter | 0.743 INCHES NOMINAL IN |
| First End Style | CIRCULAR GROOVED |
| End Similarity | IDENTICAL |
| First End Distance From End to Groove | 0.150 INCHES NOMINAL IN |
| First End Groove Diameter | 0.7040 INCHES NOMINAL IN |
| Material | STEEL COMP 4130 OR STEEL COMP 4140 |
| First End Groove Width | 0.0460 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 |
|---|---|
| 12553403 PRIMARY | Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate (USA) |
NSN 3040-01-321-8321 is a Shaft,shouldered, manufactured by Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-321-8321 has 1 manufacturer part number on file: 12553403 (Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate).
Key specifications for 12553403: Step Quantity: 7; First End Diameter: 0.7430 INCHES NOMINAL IN; Largest Step Diameter: 0.743 INCHES NOMINAL IN; First End Style: CIRCULAR GROOVED. 9 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.