The Worm Shaft, cataloged under National Stock Number 3040-00-503-4758, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate. Government technical data includes 28 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 | 3040-00-503-4758 |
| Primary Part Number | 5034758 |
| Item Name | Worm Shaft |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate |
| Status | ACTIVE |
| Shaft Location | BOTH ENDS OF WORM |
| FSC Application Data | MOUNT,TELESCOPE,ANTIAIRCRAFT FIRE CONTROL EQUIPMENT |
| Teeth Hardness Rating | 30.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM |
| Worm Body Length | 0.910 INCHES NOMINAL IN |
| Worm Thread Lead | 0.1666 INCHES NOMINAL IN |
| Worm Pitch Diameter | 0.521 INCHES NOMINAL IN |
| Worm Outside Diameter | 0.625 INCHES NOMINAL IN |
| Straight Unthreaded Section Diameter | 0.340 INCHES NOMINAL FIRST END FIRST PORTION IN |
| Straight Unthreaded Section Diameter | 0.370 INCHES NOMINAL FIRST END FOURTH PORTION IN |
| Straight Unthreaded Section Diameter | 0.3753 INCHES NOMINAL SECOND END FIRST PORTION IN |
| Straight Unthreaded Section Diameter | 0.390 INCHES NOMINAL FIRST END THIRD PORTION IN |
| Straight Unthreaded Section Diameter | 0.625 INCHES NOMINAL FIRST END SECOND PORTION IN |
| Unthreaded Section Pin Hole Diameter | 0.1560 INCHES NOMINAL SECOND END FIRST PORTION IN |
| End Similarity | NOT IDENTICAL |
| Shaft Hardness Rating | 30.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM LOCATION NOT OTHERWISE SPECIFIED |
| Surface Treatment | PASSIVATE |
| Worm Thread Section Length | 0.808 INCHES NOMINAL IN |
| Worm Helix Angle | 5 DEG 52 MIN |
| Material | STEEL |
| Worm Thread Quantity | 1 |
| Worm Thread Direction | RIGHT-HAND |
| Worm Pressure Angle in Deg | 29.000 |
| Worm Body Tapered Bearing Surface End | NOT PROVIDED |
| Straight Unthreaded Length | 0.047 INCHES NOMINAL FIRST END FOURTH PORTION IN |
| Straight Unthreaded Length | 0.527 INCHES NOMINAL FIRST END THIRD PORTION IN |
| Straight Unthreaded Length | 0.531 INCHES NOMINAL FIRST END SECOND PORTION IN |
| Straight Unthreaded Length | 0.797 INCHES NOMINAL FIRST END FIRST PORTION IN |
| Straight Unthreaded Length | 1.688 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 |
| Part Number | Manufacturer |
|---|---|
| 5034758 PRIMARY | Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate (USA) |
NSN 3040-00-503-4758 is a Worm Shaft, manufactured by Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-503-4758 has 1 manufacturer part number on file: 5034758 (Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate).
Key specifications for 5034758: Shaft Location: BOTH ENDS OF WORM; FSC Application Data: MOUNT,TELESCOPE,ANTIAIRCRAFT FIRE CONTROL EQUIPMENT; Teeth Hardness Rating: 30.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM; Worm Body Length: 0.910 INCHES NOMINAL IN. 28 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.