The Worm Shaft, cataloged under National Stock Number 3040-00-389-4728, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 27 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-389-4728 |
| Item Name | Worm Shaft |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Shaft Location | BOTH ENDS OF WORM |
| FSC Application Data | DUMMY,TRANSMITTER,SHIPS SPEED |
| Worm Body Length | 2.906 INCHES NOMINAL IN |
| Worm Thread Lead | 0.131 INCHES NOMINAL IN |
| Material Document and Classification | ASTM A108-52, GRADE 1050 ASSN STD SINGLE MATERIAL RESPONSE |
| Worm Pitch Diameter | 0.497 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| Worm Outside Diameter | 0.580 INCHES MINIMUM AND 0.583 INCHES MAXIMUM IN |
| Straight Unthreaded Section Diameter | 0.1760 INCHES MINIMUM AND 0.1765 INCHES MAXIMUM SECOND END SECOND PORTION IN |
| Straight Unthreaded Section Diameter | 0.1775 INCHES NOMINAL FIRST END SECOND PORTION IN |
| Straight Unthreaded Section Diameter | 0.1860 INCHES MINIMUM AND 0.1865 INCHES MAXIMUM SECOND END THIRD PORTION IN |
| Straight Unthreaded Section Diameter | 0.1870 INCHES MINIMUM AND 0.1875 INCHES MAXIMUM FIRST END THIRD PORTION IN |
| Straight Unthreaded Section Diameter | 0.313 INCHES NOMINAL FIRST END FIRST PORTION IN |
| Straight Unthreaded Section Diameter | 0.313 INCHES NOMINAL SECOND END FIRST PORTION IN |
| End Similarity | NOT IDENTICAL |
| Worm Thread Section Length | 0.625 INCHES NOMINAL IN |
| Worm Helix Angle | 4 DEG 46 MIN |
| Material | STEEL COMP 1050 |
| Worm Thread Quantity | 1 |
| Worm Thread Direction | RIGHT-HAND |
| Worm Pressure Angle in Deg | 14.500 |
| Worm Body Tapered Bearing Surface End | NOT PROVIDED |
| Straight Unthreaded Length | 0.063 INCHES NOMINAL FIRST END SECOND PORTION IN |
| Straight Unthreaded Length | 0.063 INCHES NOMINAL SECOND END SECOND PORTION IN |
| Straight Unthreaded Length | 0.406 INCHES NOMINAL FIRST END FIRST PORTION IN |
| Straight Unthreaded Length | 0.594 INCHES NOMINAL SECOND END THIRD PORTION IN |
| Straight Unthreaded Length | 0.9687 INCHES NOMINAL FIRST END THIRD PORTION IN |
| Straight Unthreaded Length | 1.875 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 |
|---|---|
| P501763 | 3/9 Design control — primary reference Smiths Detection Inc. Dba Smiths Detection Inc Casc |
| V40255PC19 | 5/9 Secondary reference Smiths Detection Inc. Dba Smiths Detection Inc Casc |
NSN 3040-00-389-4728 is a Worm Shaft, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
Key specifications for 3040-00-389-4728: Shaft Location: BOTH ENDS OF WORM; FSC Application Data: DUMMY,TRANSMITTER,SHIPS SPEED; Worm Body Length: 2.906 INCHES NOMINAL IN; Worm Thread Lead: 0.131 INCHES NOMINAL IN. 27 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.