The Worm Shaft, cataloged under National Stock Number 3040-01-151-0886, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 25 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-151-0886 |
| Item Name | Worm Shaft |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Shaft Location | BOTH ENDS OF WORM |
| FSC Application Data | AIRCRAFT ENGINE FUEL SYSTEM |
| Teeth Hardness Rating | 43.0 ROCKWELL C MINIMUM AND 47.0 ROCKWELL C MAXIMUM |
| Worm Thread Lead | 0.1309 INCHES NOMINAL IN |
| Thread Length | 0.312 INCHES NOMINAL SECOND END FIRST PORTION IN |
| Worm Pitch Diameter | 0.3541 INCHES NOMINAL IN |
| Worm Outside Diameter | 0.4038 INCHES MINIMUM AND 0.4058 INCHES MAXIMUM IN |
| Straight Unthreaded Section Diameter | 0.188 INCHES NOMINAL FIRST END SECOND PORTION IN |
| Straight Unthreaded Section Diameter | 0.188 INCHES NOMINAL SECOND END SECOND PORTION IN |
| Straight Unthreaded Section Diameter | 0.500 INCHES NOMINAL FIRST END FIRST PORTION IN |
| End Similarity | NOT IDENTICAL |
| Shaft Hardness Rating | 43.0 ROCKWELL C MINIMUM AND 47.0 ROCKWELL C MAXIMUM LOCATION NOT OTHERWISE SPECIFIED |
| Screw Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) SECOND END FIRST PORTION |
| Surface Treatment | PASSIVATE |
| Worm Thread Section Length | 0.813 INCHES NOMINAL IN |
| Shaft Thread Direction | RIGHT-HAND SECOND END FIRST PORTION |
| Worm Helix Angle | 6 DEG 43 MIN |
| Material | STEEL CORROSION RESISTING |
| 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 | 0.125 INCHES NOMINAL FIRST END SECOND PORTION IN |
| Straight Unthreaded Length | 0.125 INCHES NOMINAL SECOND END SECOND PORTION IN |
| Straight Unthreaded Length | 0.156 INCHES NOMINAL FIRST END FIRST PORTION IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 722125 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3040-01-151-0886 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): 5365-01-340-8122. Verify interchangeability with system specifications before substitution.
Key specifications for 3040-01-151-0886: Shaft Location: BOTH ENDS OF WORM; FSC Application Data: AIRCRAFT ENGINE FUEL SYSTEM; Teeth Hardness Rating: 43.0 ROCKWELL C MINIMUM AND 47.0 ROCKWELL C MAXIMUM; Worm Thread Lead: 0.1309 INCHES NOMINAL IN. 25 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 3040-01-151-0886 has DEMIL Code B. 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.