The Worm Shaft, cataloged under National Stock Number 3040-01-355-7696, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-355-7696 |
| Item Name | Worm Shaft |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Shaft Location | BOTH ENDS OF WORM |
| Worm Pitch Diameter | 3.550 INCHES NOMINAL IN |
| Worm Outside Diameter | 5.062 INCHES NOMINAL IN |
| Straight Unthreaded Section Diameter | 3.002 INCHES NOMINAL BOTH ENDS IN |
| End Similarity | IDENTICAL |
| Worm Thread Section Length | 5.000 INCHES NOMINAL IN |
| Material | STEEL |
| Worm Thread Quantity | 1 |
| Worm Thread Direction | RIGHT-HAND |
| Worm Body Tapered Bearing Surface End | NOT PROVIDED |
| Straight Unthreaded Length | 1.820 INCHES NOMINAL BOTH ENDS 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 |
|---|---|
| R-16880 | D/9 Drawing number reference only New England Trawler Equipment Co |
| R-16880 PC 12 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 8040C-250 | 3/2 Design control — primary reference U.S. Government activity |
| R-16880 PC NO 12 | 5/9 Secondary reference New England Trawler Equipment Co |
NSN 3040-01-355-7696 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): 3950-01-363-3837. Verify interchangeability with system specifications before substitution.
Key specifications for 3040-01-355-7696: Shaft Location: BOTH ENDS OF WORM; Overall Length: 22.500 INCHES NOMINAL IN; Worm Pitch Diameter: 3.550 INCHES NOMINAL IN; Worm Outside Diameter: 5.062 INCHES NOMINAL IN. 11 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.