The Shaft,shouldered, cataloged under National Stock Number 3040-01-211-5614, 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 Div Weapon System. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-211-5614 |
| Primary Part Number | 387-3550 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Northrop Grumman Systems Corp Div Weapon System |
| Status | ACTIVE |
| First End Pitch Diameter | 14.288 MILLIMETERS NOMINAL MM |
| Step Quantity | 13 |
| First End Diameter | 15.01 MILLIMETERS NOMINAL MM |
| First End Spline Major Diameter | 14.808 MILLIMETERS NOMINAL MM |
| First End Style | SPLINED (INVOLUTE) |
| Material Document and Classification | MIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE |
| First End Pressure Angle | 45.0 DEGREES NOMINAL |
| First End Spline Length | 22.0 MILLIMETERS NOMINAL MM |
| First End Spline Quantity | 27 |
| End Similarity | NOT IDENTICAL |
| First End Spline Minor Diameter | 13.564 MILLIMETERS NOMINAL MM |
| Material | STEEL COMP 4340 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 387-3550 PRIMARY | Northrop Grumman Systems Corp Div Weapon System (USA) |
| Reference | Meaning |
|---|---|
| 387-3550 | 5/9 Secondary reference Mcdonnell Douglas Helicopter Co Inc |
| 387-3550 | 3/9 Design control — primary reference Alliant Techsystems Operations Llc |
| 387-3550 | 5/9 Secondary reference Franke Gear Works Inc |
NSN 3040-01-211-5614 is a Shaft,shouldered, manufactured by Northrop Grumman Systems Corp Div Weapon System, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-211-5614 has 1 manufacturer part number on file: 387-3550 (Northrop Grumman Systems Corp Div Weapon System).
Key specifications for 387-3550: First End Pitch Diameter: 14.288 MILLIMETERS NOMINAL MM; Step Quantity: 13; First End Diameter: 15.01 MILLIMETERS NOMINAL MM; First End Spline Major Diameter: 14.808 MILLIMETERS NOMINAL MM. 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 3040-01-211-5614 has DEMIL Code Q. 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.