The Worm Shaft, cataloged under National Stock Number 3040-00-563-3837, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Us Army Aviation and Missile Command. Government technical data includes 24 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-563-3837 |
| Primary Part Number | 8171744 |
| Item Name | Worm Shaft |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Us Army Aviation and Missile Command |
| Status | ACTIVE |
| Shaft Location | ONE END OF WORM |
| Teeth Hardness Rating | B SCALE,94 |
| Worm Body Length | 0.375 INCHES NOMINAL IN |
| Worm Thread Lead | 0.0984 INCHES NOMINAL IN |
| Worm Pitch Diameter | 0.4389 INCHES NOMINAL IN |
| Worm Outside Diameter | 0.495 INCHES MINIMUM AND 0.501 INCHES MAXIMUM IN |
| Straight Unthreaded Section Diameter | 0.259 INCHES MINIMUM AND 0.263 INCHES MAXIMUM FIRST END FOURTH PORTION IN |
| Straight Unthreaded Section Diameter | 0.259 INCHES MINIMUM AND 0.263 INCHES MAXIMUM FIRST END SECOND PORTION IN |
| Straight Unthreaded Section Diameter | 0.270 INCHES NOMINAL FIRST END THIRD PORTION IN |
| Straight Unthreaded Section Diameter | 0.345 INCHES NOMINAL FIRST END FIRST PORTION IN |
| End Similarity | NOT IDENTICAL |
| Shaft Hardness Rating | B SCALE,94 LOCATION NOT OTHERWISE SPECIFIED |
| Surface Treatment | PASSIVATE |
| Worm Thread Section Length | 0.375 INCHES NOMINAL IN |
| Worm Helix Angle | 85 DEG 55 MIN |
| Material | STEEL |
| 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 | 0.500 INCHES NOMINAL FIRST END FIRST PORTION IN |
| Straight Unthreaded Length | 0.500 INCHES NOMINAL FIRST END SECOND PORTION IN |
| Straight Unthreaded Length | 1.1007 INCHES NOMINAL FIRST END FOURTH PORTION IN |
| Straight Unthreaded Length | 1.243 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 |
|---|---|
| 8171744 PRIMARY | Us Army Aviation and Missile Command (USA) |
NSN 3040-00-563-3837 is a Worm Shaft, manufactured by Us Army Aviation and Missile Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-563-3837 has 1 manufacturer part number on file: 8171744 (Us Army Aviation and Missile Command).
Key specifications for 8171744: Shaft Location: ONE END OF WORM; Teeth Hardness Rating: B SCALE,94; Worm Body Length: 0.375 INCHES NOMINAL IN; Worm Thread Lead: 0.0984 INCHES NOMINAL IN. 24 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.