The Worm Shaft, cataloged under National Stock Number 3040-01-413-2164, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-413-2164 |
| Primary Part Number | 845-6556510 |
| Item Name | Worm Shaft |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Keyway Depth | 0.189 INCHES NOMINAL BOTH ENDS IN |
| Shaft Location | BOTH ENDS OF WORM |
| Worm Thread Lead | 0.5694 INCHES NOMINAL IN |
| Worm Pitch Diameter | 2.303 INCHES NOMINAL IN |
| Worm Outside Diameter | 2.665 INCHES NOMINAL IN |
| End Similarity | IDENTICAL |
| Keyway Width | 0.375 INCHES NOMINAL BOTH ENDS IN |
| Screw Thread Series Designator | UN BOTH ENDS |
| Worm Thread Section Length | 3.402 INCHES NOMINAL IN |
| Worm Helix Angle | 4 DEG 30 MIN |
| Material | STEEL |
| Worm Thread Quantity | 1 |
| Worm Thread Direction | LEFT-HAND |
| Worm Pressure Angle in Deg | 20.0000 |
| Worm Body Tapered Bearing Surface End | NOT PROVIDED |
| 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 |
|---|---|
| 845-6556510 PRIMARY | Naval Sea Systems Command (USA) |
| 845-6603141-61 | Naval Sea Systems Command (USA) |
NSN 3040-01-413-2164 is a Worm Shaft, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-413-2164 has 2 manufacturer part numbers on file: 845-6556510 (Naval Sea Systems Command), 845-6603141-61 (Naval Sea Systems Command).
Key specifications for 845-6556510: Keyway Depth: 0.189 INCHES NOMINAL BOTH ENDS IN; Shaft Location: BOTH ENDS OF WORM; Worm Thread Lead: 0.5694 INCHES NOMINAL IN; Overall Length: 14.900 INCHES NOMINAL IN. 15 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.