The Gearshaft,spur, cataloged under National Stock Number 3040-01-182-7874, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-182-7874 |
| Primary Part Number | 522-4675675ITEM3 |
| Item Name | Gearshaft,spur |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Shaft Type | SHOULDERED |
| Shaft Material | STEEL |
| Shaft Largest Diameter | 1.260 INCHES NOMINAL IN |
| Shaft End Size | 0.998 INCHES IN |
| Teeth Quantity | 9 |
| Gear Outside Diameter | 2.000 INCHES NOMINAL IN |
| Longer Shaft Segment Length | 2.118 INCHES NOMINAL IN |
| Gear Material | STEEL |
| Shaft End Type | SPLINED STRAIGHT AND CROSS DRILLED PARTIAL |
| Gear Location on Shaft | OFF CENTER BETWEEN ENDS OF SHAFT |
| Pressure Angle | 20.0000 DEGREES |
| Face Width | 1.110 INCHES NOMINAL IN |
| 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 |
|---|---|
| 522-4675675ITEM3 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 87643-6903 | D/9 Drawing number reference only U.S. Government activity |
| 522-4675675 | D/9 Drawing number reference only U.S. Government activity |
NSN 3040-01-182-7874 is a Gearshaft,spur, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-182-7874 has 1 manufacturer part number on file: 522-4675675ITEM3 (Naval Sea Systems Command).
4 possible matches (shared part number, not a government interchangeability claim): 3020-01-183-4774, 3020-01-232-7179, 3020-01-247-2638. Verify interchangeability with system specifications before substitution.
Key specifications for 522-4675675ITEM3: Shaft Type: SHOULDERED; Shaft Material: STEEL; Shaft Largest Diameter: 1.260 INCHES NOMINAL IN; Shaft End Size: 0.998 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.
NSN 3040-01-182-7874 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.