The Worm Shaft, cataloged under National Stock Number 3040-00-033-5815, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is General Electric Company. Government technical data includes 29 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-033-5815 |
| Primary Part Number | 288C720 |
| Item Name | Worm Shaft |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | General Electric Company |
| Status | ACTIVE |
| Shaft Location | BOTH ENDS OF WORM |
| Involute Spline Pitch Diameter | 1.3330 INCHES NOMINAL FIRST END FOURTH PORTION IN |
| Teeth Hardness Rating | C SCALE,41 TO 45 |
| Worm Body Length | 20.875 INCHES NOMINAL IN |
| Worm Thread Lead | 2.2323 INCHES NOMINAL IN |
| Material Document and Classification | B50R214,CLASS D,GENERAL ELECTRIC CO MFR REF SINGLE MATERIAL RESPONSE |
| Worm Pitch Diameter | 2.625 INCHES NOMINAL IN |
| Worm Outside Diameter | 2.998 INCHES MINIMUM AND 3.000 INCHES MAXIMUM IN |
| Straight Unthreaded Section Diameter | 1.485 INCHES MINIMUM AND 1.495 INCHES MAXIMUM SECOND END THIRD PORTION IN |
| Straight Unthreaded Section Diameter | 1.499 INCHES MINIMUM AND 1.500 INCHES MAXIMUM FIRST END THIRD PORTION IN |
| Straight Unthreaded Section Diameter | 1.5749 INCHES MINIMUM AND 1.5753 INCHES MAXIMUM FIRST END SECOND PORTION IN |
| Straight Unthreaded Section Diameter | 1.5749 INCHES MINIMUM AND 1.5753 INCHES MAXIMUM SECOND END SECOND PORTION IN |
| Straight Unthreaded Section Diameter | 2.125 INCHES NOMINAL FIRST END FIRST PORTION IN |
| Straight Unthreaded Section Diameter | 2.125 INCHES NOMINAL SECOND END FIRST PORTION IN |
| Unthreaded Section Keyway Depth | 0.188 INCHES NOMINAL SECOND END THIRD PORTION IN |
| End Similarity | NOT IDENTICAL |
| Shaft Hardness Rating | C SCALE,41 TO 45 LOCATION NOT OTHERWISE SPECIFIED |
| Involute Spline Length | 2.188 INCHES NOMINAL FIRST END FOURTH PORTION IN |
| Worm Thread Section Length | 4.250 INCHES NOMINAL IN |
| Involute Spline Pressure Angle in Deg | 25.0 FIRST END FOURTH PORTION |
| Worm Helix Angle | 15 DEG 8 MIN 47.10 SEC |
| Material | STEEL |
| Worm Thread Quantity | 3 |
| Worm Thread Direction | RIGHT-HAND |
| Involute Spline Quantity | 16 FIRST END FOURTH PORTION |
| Unthreaded Section Keyway Width | 0.3700 INCHES MINIMUM AND 0.3720 INCHES MAXIMUM SECOND END THIRD PORTION IN |
| Worm Pressure Angle in Deg | 24.217 |
| Worm Body Tapered Bearing Surface End | NOT PROVIDED |
| Straight Unthreaded Length | 0.813 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 |
| Part Number | Manufacturer |
|---|---|
| 288C720 | General Electric Company (USA) |
| Reference | Meaning |
|---|---|
| 288C720-001 | 3/9 Design control — primary reference General Electric Co Naval and Drive Turbine Systems Dept |
| 2886720-001 | 5/9 Secondary reference General Electric Company |
| 288C720-1 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 28867730-001 | 5/9 Secondary reference General Electric Co Naval and Drive Turbine Systems Dept |
| 288C720-001 | 5/9 Secondary reference General Electric Company |
| 288C720 | 5/9 Secondary reference U.S. Government activity |
NSN 3040-00-033-5815 is a Worm Shaft, manufactured by General Electric Company, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-033-5815 has 1 manufacturer part number on file: 288C720 (General Electric Company).
Key specifications for 288C720: Shaft Location: BOTH ENDS OF WORM; Involute Spline Pitch Diameter: 1.3330 INCHES NOMINAL FIRST END FOURTH PORTION IN; Teeth Hardness Rating: C SCALE,41 TO 45; Worm Body Length: 20.875 INCHES NOMINAL IN. 29 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.