The Worm Shaft, cataloged under National Stock Number 3040-00-556-8633, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Army, United States Department of the Dba Rock Island Arsenal Jmtc. 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 | 3040-00-556-8633 |
| Primary Part Number | 5568633 |
| Item Name | Worm Shaft |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Army, United States Department of the Dba Rock Island Arsenal Jmtc |
| Status | ACTIVE |
| Shaft Location | BOTH ENDS OF WORM |
| FSC Application Data | ELEVATING MECHANISM ASSY,MOUNT HOWITZER,105MM,M4 MM |
| Section Shape | SQUARE FIRST END FIRST PORTION |
| Section Shape | SQUARE SECOND END SECOND PORTION |
| Teeth Hardness Rating | C SCALE,23 |
| Worm Body Length | 5.225 INCHES NOMINAL IN |
| Worm Thread Lead | 0.375 INCHES NOMINAL IN |
| Thread Length | 1.000 INCHES NOMINAL FIRST END SECOND PORTION IN |
| Worm Pitch Diameter | 1.975 INCHES NOMINAL IN |
| Worm Outside Diameter | 2.213 INCHES NOMINAL IN |
| Straight Unthreaded Section Diameter | 0.8125 INCHES NOMINAL SECOND END FIRST PORTION IN |
| End Similarity | NOT IDENTICAL |
| Shaft Hardness Rating | C SCALE,23 LOCATION NOT OTHERWISE SPECIFIED |
| Screw Thread Series Designator | UNF FIRST END SECOND PORTION |
| Worm Thread Section Length | 1.250 INCHES NOMINAL IN |
| Shaft Thread Direction | RIGHT-HAND FIRST END SECOND PORTION |
| Worm Helix Angle | 3 DEG 30 MIN |
| Material | COPPER ALLOY |
| Worm Thread Quantity | 3 |
| Worm Thread Direction | LEFT-HAND |
| Threaded Section Pin Hole Diameter | 0.136 INCHES NOMINAL FIRST END SECOND PORTION IN |
| Worm Pressure Angle in Deg | 40.000 |
| Worm Body Tapered Bearing Surface End | NOT PROVIDED |
| Straight Unthreaded Length | 4.9175 INCHES NOMINAL SECOND END FIRST PORTION IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 5568633 PRIMARY | Army, United States Department of the Dba Rock Island Arsenal Jmtc (USA) |
NSN 3040-00-556-8633 is a Worm Shaft, manufactured by Army, United States Department of the Dba Rock Island Arsenal Jmtc, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-556-8633 has 1 manufacturer part number on file: 5568633 (Army, United States Department of the Dba Rock Island Arsenal Jmtc).
Key specifications for 5568633: Shaft Location: BOTH ENDS OF WORM; FSC Application Data: ELEVATING MECHANISM ASSY,MOUNT HOWITZER,105MM,M4 MM; Section Shape: SQUARE FIRST END FIRST PORTION; Section Shape: SQUARE SECOND END SECOND PORTION. 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.
NSN 3040-00-556-8633 has DEMIL Code D. 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.