The Worm Shaft, cataloged under National Stock Number 3040-00-607-2533, 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 29 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. 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 | 3040-00-607-2533 |
| Primary Part Number | 8419008 |
| 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 |
| Keyway Depth | 0.094 INCHES NOMINAL FIRST END FIFTH PORTION IN |
| Keyway Depth | 0.094 INCHES NOMINAL SECOND END FIFTH PORTION IN |
| Shaft Location | BOTH ENDS OF WORM |
| Worm Body Length | 3.188 INCHES NOMINAL IN |
| Worm Thread Lead | 0.625 INCHES NOMINAL IN |
| Thread Length | 0.375 INCHES NOMINAL FIRST END FIFTH PORTION IN |
| Thread Length | 0.375 INCHES NOMINAL SECOND END FIFTH PORTION IN |
| Material Document and Classification | ASTM A400, CLASS Q2 ASSN STD SINGLE MATERIAL RESPONSE |
| Worm Pitch Diameter | 2.500 INCHES NOMINAL IN |
| Worm Outside Diameter | 2.895 INCHES MINIMUM AND 2.897 INCHES MAXIMUM IN |
| Straight Unthreaded Section Diameter | 0.873 INCHES MINIMUM AND 0.874 INCHES MAXIMUM SECOND END SIXTH PORTION IN |
| Straight Unthreaded Section Diameter | 1.094 INCHES NOMINAL SECOND END FOURTH PORTION IN |
| Straight Unthreaded Section Diameter | 1.180 INCHES MINIMUM AND 1.181 INCHES MAXIMUM FIRST END THIRD PORTION IN |
| Straight Unthreaded Section Diameter | 1.180 INCHES MINIMUM AND 1.181 INCHES MAXIMUM SECOND END THIRD PORTION IN |
| Straight Unthreaded Section Diameter | 1.406 INCHES NOMINAL SECOND END SECOND PORTION IN |
| Straight Unthreaded Section Diameter | 1.417 INCHES NOMINAL FIRST END SECOND PORTION IN |
| Straight Unthreaded Section Diameter | 1.750 INCHES NOMINAL FIRST END FIRST PORTION IN |
| Straight Unthreaded Section Diameter | 1.750 INCHES NOMINAL SECOND END FIRST PORTION IN |
| Unthreaded Section Keyway Depth | 0.245 INCHES NOMINAL SECOND END SIXTH PORTION IN |
| End Similarity | NOT IDENTICAL |
| Keyway Width | 0.188 INCHES NOMINAL FIRST END FIFTH PORTION IN |
| Keyway Width | 0.188 INCHES NOMINAL SECOND END FIFTH PORTION IN |
| Screw Thread Series Designator | UNS FIRST END FIFTH PORTION |
| Screw Thread Series Designator | UNS SECOND END FIFTH PORTION |
| Shaft Thread Direction | RIGHT-HAND FIRST END FIFTH PORTION |
| Shaft Thread Direction | RIGHT-HAND SECOND END FIFTH PORTION |
| Worm Helix Angle | 4 DEG 32 MIN 59.3 SEC |
| Material | STEEL |
| Worm Thread Quantity | 1 |
| 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 |
|---|---|
| 8419008 PRIMARY | Army, United States Department of the Dba Rock Island Arsenal Jmtc (USA) |
NSN 3040-00-607-2533 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 3040-00-607-2533 has 1 manufacturer part number on file: 8419008 (Army, United States Department of the Dba Rock Island Arsenal Jmtc).
1 possible match (shared part number, not a government interchangeability claim): 7021-01-239-6285. Verify interchangeability with system specifications before substitution.
Key specifications for 8419008: Keyway Depth: 0.094 INCHES NOMINAL FIRST END FIFTH PORTION IN; Keyway Depth: 0.094 INCHES NOMINAL SECOND END FIFTH PORTION IN; Shaft Location: BOTH ENDS OF WORM; Worm Body Length: 3.188 INCHES NOMINAL IN. 29 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.