The Shaft,shouldered, cataloged under National Stock Number 3040-01-391-3901, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems. Government technical data includes 14 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-391-3901 |
| Primary Part Number | DAA3255D028-003 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems |
| Status | ACTIVE |
| Second End Hole Diameter | 0.0710 INCHES MINIMUM AND 0.0810 INCHES MAXIMUM IN |
| Step Quantity | 3 |
| First End Diameter | 0.6230 INCHES MINIMUM AND 0.6240 INCHES MAXIMUM IN |
| Second End Diameter | 0.3120 INCHES NOMINAL IN |
| Largest Step Diameter | 0.436 INCHES NOMINAL IN |
| First End Slot Width | 0.1250 INCHES NOMINAL IN |
| First End Style | SLOTTED |
| Material Document and Classification | MIL-S-500,COND E4 MIL SPEC SINGLE MATERIAL RESPONSE |
| Second End Distance From Hole Center to End | 0.131 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| First End Slot Depth | 0.1250 INCHES NOMINAL IN |
| Second End Style | CROSS DRILLED HOLE AND INTERNALLY THREADED |
| Material | STEEL COMP 4340 |
| Second End Internal Thread Length | 0.400 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 |
|---|---|
| DAA3255D028-003 PRIMARY | Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems (USA) |
| Reference | Meaning |
|---|---|
| DAA3255D028 | D/9 Drawing number reference only Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems |
NSN 3040-01-391-3901 is a Shaft,shouldered, manufactured by Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-391-3901 has 1 manufacturer part number on file: DAA3255D028-003 (Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems).
Key specifications for DAA3255D028-003: Second End Hole Diameter: 0.0710 INCHES MINIMUM AND 0.0810 INCHES MAXIMUM IN; Step Quantity: 3; First End Diameter: 0.6230 INCHES MINIMUM AND 0.6240 INCHES MAXIMUM IN; Second End Diameter: 0.3120 INCHES NOMINAL IN. 14 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.