The Worm Shaft, cataloged under National Stock Number 3040-01-352-2428, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 21 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-352-2428 |
| Item Name | Worm Shaft |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Shaft Location | BOTH ENDS OF WORM |
| Involute Spline Pitch Diameter | 2.2500 INCHES NOMINAL SECOND END IN |
| Teeth Hardness Rating | 33.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM |
| Worm Body Length | 12.875 INCHES NOMINAL IN |
| Worm Pitch Diameter | 4.561 INCHES NOMINAL IN |
| Worm Outside Diameter | 5.062 INCHES NOMINAL IN |
| Straight Unthreaded Section Diameter | 4.625 INCHES NOMINAL FIRST END IN |
| Unthreaded Section Keyway Depth | 0.188 INCHES NOMINAL FIRST END IN |
| End Similarity | NOT IDENTICAL |
| Shaft Hardness Rating | 33.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM LOCATION NOT OTHERWISE SPECIFIED |
| Involute Spline Length | 2.250 INCHES NOMINAL SECOND END IN |
| Concave Worm Throat Curvature Radius | 8.470 INCHES NOMINAL IN |
| Worm Thread Section Length | 6.125 INCHES NOMINAL IN |
| Worm Helix Angle | 20 DEGREES |
| Material | STEEL |
| Worm Thread Quantity | 3 |
| Worm Thread Direction | RIGHT-HAND |
| Concave Worm Throat Diameter | 4.060 INCHES NOMINAL IN |
| Involute Spline Quantity | 18 SECOND END |
| Unthreaded Section Keyway Width | 0.6250 INCHES NOMINAL FIRST END IN |
| Straight Unthreaded Length | 6.250 INCHES NOMINAL FIRST END 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 |
|---|---|
| 8015C-235 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3040-01-352-2428 is a Worm Shaft, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
Key specifications for 3040-01-352-2428: Shaft Location: BOTH ENDS OF WORM; Involute Spline Pitch Diameter: 2.2500 INCHES NOMINAL SECOND END IN; Teeth Hardness Rating: 33.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM; Worm Body Length: 12.875 INCHES NOMINAL IN. 21 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.