The Worm Shaft, cataloged under National Stock Number 3040-00-005-7460, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 18 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-005-7460 |
| Item Name | Worm Shaft |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Shaft Location | BOTH ENDS OF WORM |
| Teeth Hardness Rating | 56.0 ROCKWELL C MINIMUM AND 59.2 ROCKWELL C MAXIMUM |
| Worm Thread Lead | 8.432 INCHES NOMINAL IN |
| Thread Length | 0.438 INCHES NOMINAL FIRST END FIRST PORTION IN |
| Worm Pitch Diameter | 2.782 INCHES NOMINAL IN |
| Worm Outside Diameter | 3.209 INCHES MINIMUM AND 3.211 INCHES MAXIMUM IN |
| Straight Unthreaded Section Diameter | 0.880 INCHES NOMINAL SECOND END FIRST PORTION IN |
| End Similarity | NOT IDENTICAL |
| Shaft Hardness Rating | 36.6 ROCKWELL C MINIMUM LOCATION NOT OTHERWISE SPECIFIED |
| Screw Thread Series Designator | UN FIRST END FIRST PORTION |
| Worm Thread Section Length | 3.750 INCHES NOMINAL IN |
| Shaft Thread Direction | RIGHT-HAND FIRST END FIRST PORTION |
| Worm Helix Angle | 43DEG58MIN26SEC |
| Material | STEEL |
| Worm Thread Quantity | 12 |
| Worm Thread Direction | RIGHT-HAND |
| Worm Pressure Angle in Deg | 22.500 |
| Straight Unthreaded Length | 1.250 INCHES NOMINAL SECOND END FIRST PORTION IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| DW1243G11 | 5/9 Secondary reference Siemens Energy, Inc. |
| WE-12619 | D/9 Drawing number reference only Siemens Energy, Inc. |
| DW1243G11 | 3/9 Design control — primary reference Imo Industries Inc Delroyd Worm Gear Div |
NSN 3040-00-005-7460 is a Worm Shaft, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
Key specifications for 3040-00-005-7460: Shaft Location: BOTH ENDS OF WORM; Teeth Hardness Rating: 56.0 ROCKWELL C MINIMUM AND 59.2 ROCKWELL C MAXIMUM; Worm Thread Lead: 8.432 INCHES NOMINAL IN; Thread Length: 0.438 INCHES NOMINAL FIRST END FIRST PORTION IN. 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.