The Worm Shaft, cataloged under National Stock Number 3040-00-404-9367, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 26 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-404-9367 |
| Primary Part Number | 2523918 |
| Item Name | Worm Shaft |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Shaft Location | BOTH ENDS OF WORM |
| Involute Spline Pitch Diameter | 0.5833 INCHES NOMINAL SECOND END THIRD PORTION IN |
| Teeth Hardness Rating | 45.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL B MAXIMUM |
| Worm Thread Lead | 0.314 INCHES NOMINAL IN |
| Material Document and Classification | QQ-S-624, FS4140 FED SPEC SINGLE MATERIAL RESPONSE |
| Worm Pitch Diameter | 1.250 INCHES NOMINAL IN |
| Worm Outside Diameter | 1.448 INCHES MINIMUM AND 1.450 INCHES MAXIMUM IN |
| Straight Unthreaded Section Diameter | 0.591 INCHES NOMINAL FIRST END SECOND PORTION IN |
| Straight Unthreaded Section Diameter | 0.669 INCHES NOMINAL SECOND END SECOND PORTION IN |
| Straight Unthreaded Section Diameter | 0.750 INCHES NOMINAL FIRST END FIRST PORTION IN |
| Straight Unthreaded Section Diameter | 0.843 INCHES NOMINAL SECOND END FIRST PORTION IN |
| End Similarity | NOT IDENTICAL |
| Involute Spline Length | 0.906 INCHES NOMINAL SECOND END THIRD PORTION IN |
| Worm Thread Section Length | 1.563 INCHES NOMINAL IN |
| Involute Spline Pressure Angle in Deg | 30.0 SECOND END THIRD PORTION |
| Worm Helix Angle | 4 DEG 34 MIN 26 SEC |
| Material | STEEL COMP 4140 |
| Worm Thread Quantity | 1 |
| Worm Thread Direction | LEFT-HAND |
| Involute Spline Quantity | 14 SECOND END THIRD PORTION |
| Worm Pressure Angle in Deg | 14.500 |
| Worm Body Tapered Bearing Surface End | NOT PROVIDED |
| Straight Unthreaded Length | 0.219 INCHES NOMINAL FIRST END FIRST PORTION IN |
| Straight Unthreaded Length | 0.281 INCHES NOMINAL SECOND END FIRST PORTION IN |
| Straight Unthreaded Length | 0.469 INCHES NOMINAL SECOND END SECOND PORTION IN |
| Straight Unthreaded Length | 0.531 INCHES NOMINAL FIRST END SECOND 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 |
| Part Number | Manufacturer |
|---|---|
| 2523918 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
NSN 3040-00-404-9367 is a Worm Shaft, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-404-9367 has 1 manufacturer part number on file: 2523918 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
Key specifications for 2523918: Shaft Location: BOTH ENDS OF WORM; Involute Spline Pitch Diameter: 0.5833 INCHES NOMINAL SECOND END THIRD PORTION IN; Teeth Hardness Rating: 45.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL B MAXIMUM; Worm Thread Lead: 0.314 INCHES NOMINAL IN. 26 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.