The Worm Shaft, cataloged under National Stock Number 3040-01-504-8342, 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 18 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-504-8342 |
| Primary Part Number | 596-7410249-61 |
| Item Name | Worm Shaft |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Shaft Location | ONE END OF WORM |
| Section Shape | SQUARE FIRST END FIRST PORTION |
| Tapered Bearing Surface Largest Diameter | 0.750 INCHES NOMINAL IN |
| Teeth Hardness Rating | 38.0 ROCKWELL C MAXIMUM |
| Worm Body Length | 12.120 INCHES NOMINAL IN |
| Worm Thread Lead | 0.125 INCHES NOMINAL IN |
| Tapered Bearing Surface Smallest Diameter | 0.650 INCHES NOMINAL IN |
| Worm Pitch Diameter | 0.665 INCHES MINIMUM AND 0.681 INCHES MAXIMUM IN |
| Worm Outside Diameter | 0.750 INCHES NOMINAL IN |
| Shaft Hardness Rating | 38.0 ROCKWELL C MAXIMUM LOCATION NOT OTHERWISE SPECIFIED |
| Tapered Bearing Surface Length | 0.050 INCHES NOMINAL IN |
| Worm Thread Section Length | 7.240 INCHES NOMINAL IN |
| Worm Helix Angle | 3.312 DEGREES |
| Material | STEEL CORROSION RESISTING |
| Worm Thread Quantity | 58 |
| Worm Thread Direction | RIGHT-HAND |
| Worm Pressure Angle in Deg | 14.500 |
| Worm Body Tapered Bearing Surface End | PROVIDED |
| 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 |
|---|---|
| 596-7410249-61 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| B831-9511-61 | 5/2 Secondary reference U.S. Government activity |
| 596-7410249 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 3040-01-504-8342 is a Worm Shaft, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-504-8342 has 1 manufacturer part number on file: 596-7410249-61 (Naval Sea Systems Command).
Key specifications for 596-7410249-61: Shaft Location: ONE END OF WORM; Section Shape: SQUARE FIRST END FIRST PORTION; Tapered Bearing Surface Largest Diameter: 0.750 INCHES NOMINAL IN; Teeth Hardness Rating: 38.0 ROCKWELL C MAXIMUM. 18 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.