The Gearshaft,spur, cataloged under National Stock Number 3040-01-383-5158, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-383-5158 |
| Item Name | Gearshaft,spur |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Shaft Type | SHOULDERED |
| Shaft Material | STEEL COMP E4340 OR STEEL COMP 4140 |
| Shaft Largest Diameter | 1.000 INCHES NOMINAL IN |
| Shaft End Size | 0.156 INCHES IN |
| Teeth Quantity | 16 |
| Diametral Pitch | 8 |
| Gear Outside Diameter | 2.250 INCHES NOMINAL IN |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL |
| Gear Material | STEEL COMP E4340 OR STEEL COMP 4140 |
| Shaft End Type | TONGUE ROUNDED SIDES AND CIRCULAR GROOVED, CROSS DRILLED UNTHREADED |
| Gear Location on Shaft | ON END OF SHAFT |
| Pressure Angle | 25.0000 DEGREES |
| Face Width | 1.000 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 |
| Reference | Meaning |
|---|---|
| 025555-1 | C/1 Advisory reference — outside the item-of-supply concept Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc |
| 025555-1 | 3/9 Design control — primary reference Meggitt Defense Systems, Inc. Dba Meggitt Western Design |
NSN 3040-01-383-5158 is a Gearshaft,spur, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
Key specifications for 3040-01-383-5158: Shaft Type: SHOULDERED; Shaft Material: STEEL COMP E4340 OR STEEL COMP 4140; Shaft Largest Diameter: 1.000 INCHES NOMINAL IN; Shaft End Size: 0.156 INCHES IN. 13 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 3040-01-383-5158 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.