The Gearshaft,spur, cataloged under National Stock Number 3040-01-529-0646, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Naval Sea Systems Command. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-529-0646 |
| Primary Part Number | 7384570-89 |
| Item Name | Gearshaft,spur |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Shaft Type | SHOULDERED |
| Shaft Material | NICKEL ALLOY |
| Shaft Largest Diameter | 2.371 INCHES MINIMUM IN |
| Shaft End Size | 1.499 INCHES IN |
| Teeth Quantity | 12 |
| Gear Outside Diameter | 1.499 INCHES MINIMUM IN |
| Longer Shaft Segment Length | 9.320 INCHES NOMINAL IN |
| Gear Material | NICKEL ALLOY |
| Shaft End Type | BEARING SEAT |
| Gear Location on Shaft | OFF CENTER BETWEEN ENDS OF SHAFT |
| Pressure Angle | 25.0000 DEGREES |
| Face Width | 2.310 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 |
|---|---|
| 7384570-89 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| G547-3302-89 | 5/2 Secondary reference U.S. Government activity |
NSN 3040-01-529-0646 is a Gearshaft,spur, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-529-0646 has 1 manufacturer part number on file: 7384570-89 (Naval Sea Systems Command).
Key specifications for 7384570-89: Shaft Type: SHOULDERED; Shaft Material: NICKEL ALLOY; Shaft Largest Diameter: 2.371 INCHES MINIMUM IN; Shaft End Size: 1.499 INCHES IN. 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.
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.