The Worm Shaft, cataloged under National Stock Number 3040-00-593-7760, 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. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-593-7760 |
| Primary Part Number | 1325303 |
| 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 |
| Surface Treatment Document and Classification | MIL-C-16232 TYPE 1 MIL SPEC SINGLE TREATMENT RESPONSE |
| Teeth Hardness Rating | 23.0 ROCKWELL C MINIMUM AND 31.0 ROCKWELL C MAXIMUM |
| Worm Body Length | 0.312 INCHES NOMINAL IN |
| Worm Thread Lead | 0.050 INCHES NOMINAL IN |
| Worm Pitch Diameter | 0.2175 INCHES NOMINAL IN |
| Worm Outside Diameter | 0.249 INCHES NOMINAL IN |
| Straight Unthreaded Section Diameter | 0.146 INCHES MINIMUM AND 0.156 INCHES MAXIMUM FIRST END FIRST PORTION IN |
| Straight Unthreaded Section Diameter | 0.155 INCHES MINIMUM AND 0.156 INCHES MAXIMUM SECOND END FIRST PORTION IN |
| Straight Unthreaded Section Diameter | 0.250 INCHES NOMINAL FIRST END THIRD PORTION IN |
| Straight Unthreaded Section Diameter | 0.279 INCHES MINIMUM AND 0.280 INCHES MAXIMUM FIRST END SECOND PORTION IN |
| Straight Unthreaded Section Diameter | 0.375 INCHES NOMINAL FIRST END FOURTH PORTION IN |
| End Similarity | NOT IDENTICAL |
| Shaft Hardness Rating | 23.0 ROCKWELL C MINIMUM AND 31.0 ROCKWELL C MAXIMUM LOCATION NOT OTHERWISE SPECIFIED |
| Surface Treatment | PHOSPHATE MANGANESE |
| Worm Helix Angle | 4 DEG 11 MIN 5 SEC |
| Material | STEEL |
| Worm Thread Quantity | 1 |
| Worm Thread Direction | RIGHT-HAND |
| Worm Pressure Angle in Deg | 30.000 |
| Worm Body Tapered Bearing Surface End | NOT PROVIDED |
| Straight Unthreaded Length | 0.031 INCHES NOMINAL FIRST END THIRD PORTION IN |
| Straight Unthreaded Length | 0.094 INCHES NOMINAL FIRST END FIRST PORTION IN |
| Straight Unthreaded Length | 0.125 INCHES NOMINAL FIRST END SECOND PORTION IN |
| Straight Unthreaded Length | 0.188 INCHES NOMINAL FIRST END FOURTH PORTION IN |
| Straight Unthreaded Length | 0.406 INCHES NOMINAL SECOND END FIRST PORTION IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 1325303 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
NSN 3040-00-593-7760 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 3040-00-593-7760 has 1 manufacturer part number on file: 1325303 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
1 possible match (shared part number, not a government interchangeability claim): 6615-01-535-4020. Verify interchangeability with system specifications before substitution.
Key specifications for 1325303: Shaft Location: BOTH ENDS OF WORM; Surface Treatment Document and Classification: MIL-C-16232 TYPE 1 MIL SPEC SINGLE TREATMENT RESPONSE; Teeth Hardness Rating: 23.0 ROCKWELL C MINIMUM AND 31.0 ROCKWELL C MAXIMUM; Worm Body Length: 0.312 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.
NSN 3040-00-593-7760 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.