The Worm Shaft, cataloged under National Stock Number 3040-01-034-3698, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 23 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-034-3698 |
| Item Name | Worm Shaft |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Shaft Location | ONE END OF WORM |
| Worm Body Length | 0.625 INCHES NOMINAL IN |
| Worm Thread Lead | 0.143 INCHES NOMINAL IN |
| Worm Pitch Diameter | 0.261 INCHES MINIMUM AND 0.273 INCHES MAXIMUM IN |
| Worm Outside Diameter | 0.313 INCHES NOMINAL IN |
| Straight Unthreaded Section Diameter | 0.094 INCHES NOMINAL FIRST END FIRST PORTION IN |
| Straight Unthreaded Section Diameter | 0.141 INCHES NOMINAL FIRST END FIFTH PORTION IN |
| Straight Unthreaded Section Diameter | 0.250 INCHES NOMINAL FIRST END THIRD PORTION IN |
| Straight Unthreaded Section Diameter | 0.437 INCHES NOMINAL FIRST END FOURTH PORTION IN |
| Straight Unthreaded Section Diameter | 0.437 INCHES NOMINAL FIRST END SECOND PORTION IN |
| Straight Unthreaded Section Diameter | 0.437 INCHES NOMINAL FIRST END SIXTH PORTION IN |
| Unthreaded Section Keyway Depth | 0.141 INCHES NOMINAL FIRST END SIXTH PORTION IN |
| Unthreaded Section Pin Hole Diameter | 0.0630 INCHES NOMINAL FIRST END SIXTH PORTION IN |
| Surface Treatment | ANODIZE |
| Worm Thread Section Length | 0.625 INCHES NOMINAL IN |
| Worm Helix Angle | 29 DEGREES |
| Material | ALUMINUM ALLOY |
| Worm Thread Quantity | 9 |
| Worm Thread Direction | RIGHT-HAND |
| Unthreaded Section Keyway Width | 0.0620 INCHES NOMINAL FIRST END SIXTH PORTION IN |
| Worm Pressure Angle in Deg | 9.400 |
| Worm Body Tapered Bearing Surface End | NOT PROVIDED |
| Straight Unthreaded Length | 2.712 INCHES NOMINAL FIRST END 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 |
| Reference | Meaning |
|---|---|
| 715953 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3040-01-034-3698 is a Worm Shaft, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5998-01-601-5782. Verify interchangeability with system specifications before substitution.
Key specifications for 3040-01-034-3698: Shaft Location: ONE END OF WORM; Worm Body Length: 0.625 INCHES NOMINAL IN; Worm Thread Lead: 0.143 INCHES NOMINAL IN; Overall Length: 3.431 INCHES NOMINAL IN. 23 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 3040-01-034-3698 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.