The Worm Shaft, cataloged under National Stock Number 3040-00-391-7376, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 20 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3040-00-391-7376 |
| Item Name | Worm Shaft |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Shaft Location | ONE END OF WORM |
| Worm Thread Lead | 2.375 INCHES NOMINAL IN |
| Worm Outside Diameter | 1.186 INCHES NOMINAL IN |
| Straight Unthreaded Section Diameter | 0.700 INCHES NOMINAL FIRST END FIRST PORTION IN |
| Straight Unthreaded Section Diameter | 0.875 INCHES NOMINAL FIRST END FOURTH PORTION IN |
| Straight Unthreaded Section Diameter | 1.000 INCHES NOMINAL FIRST END THIRD PORTION IN |
| Straight Unthreaded Section Diameter | 1.285 INCHES NOMINAL FIRST END SECOND PORTION IN |
| Unthreaded Section Keyway Depth | 0.109 INCHES NOMINAL FIRST END FOURTH PORTION IN |
| Worm Thread Section Length | 7.375 INCHES NOMINAL IN |
| Worm Helix Angle | 60 DEG |
| Material | STEEL |
| Worm Thread Quantity | 2 |
| Worm Thread Direction | RIGHT-HAND |
| Unthreaded Section Keyway Width | 0.1890 INCHES NOMINAL FIRST END FOURTH PORTION IN |
| Worm Pressure Angle in Deg | 20.000 |
| Worm Body Tapered Bearing Surface End | NOT PROVIDED |
| Straight Unthreaded Length | 1.125 INCHES NOMINAL FIRST END SECOND PORTION IN |
| Straight Unthreaded Length | 1.625 INCHES NOMINAL FIRST END FIRST PORTION IN |
| Straight Unthreaded Length | 3.710 INCHES NOMINAL FIRST END FOURTH PORTION IN |
| Straight Unthreaded Length | 4.000 INCHES NOMINAL FIRST END THIRD 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 |
|---|---|
| DSC118BF | C/1 Advisory reference — outside the item-of-supply concept Circor Pumps North America Llc |
| DSC118BF | 5/9 Secondary reference Siemens Energy, Inc. |
| DSC118BF | 3/9 Design control — primary reference Imo Industries Inc Delroyd Worm Gear Div |
NSN 3040-00-391-7376 is a Worm Shaft, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
Key specifications for 3040-00-391-7376: Shaft Location: ONE END OF WORM; Worm Thread Lead: 2.375 INCHES NOMINAL IN; Overall Length: 17.828 INCHES NOMINAL IN; Worm Outside Diameter: 1.186 INCHES NOMINAL IN. 20 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.