The Worm Shaft, cataloged under National Stock Number 3040-00-555-4108, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is General Electric Company. 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 | 3040-00-555-4108 |
| Primary Part Number | 687A416P22 |
| Item Name | Worm Shaft |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | General Electric Company |
| Status | ACTIVE |
| Shaft Location | BOTH ENDS OF WORM |
| FSC Application Data | RADAR SETS,NONAIRBORNE,EXCEPT FIRE CONTROL AND GUIDED MISSILE |
| Worm Body Length | 1.375 INCHES NOMINAL IN |
| Worm Thread Lead | 0.261 INCHES NOMINAL IN |
| Serrated Section Length | 0.250 INCHES NOMINAL SECOND END SECOND PORTION IN |
| Material Document and Classification | AISI C1144 ASSN STD 1ST MATERIAL RESPONSE |
| Worm Outside Diameter | 1.148 INCHES NOMINAL IN |
| Straight Unthreaded Section Diameter | 0.590 INCHES NOMINAL FIRST END SECOND PORTION IN |
| Straight Unthreaded Section Diameter | 0.750 INCHES NOMINAL FIRST END FIRST PORTION IN |
| Straight Unthreaded Section Diameter | 0.750 INCHES NOMINAL SECOND END FIRST PORTION IN |
| End Similarity | NOT IDENTICAL |
| Serration Quantity | 16 SECOND END SECOND PORTION |
| Surface Treatment | CHROMATE ZINC |
| Serration Major Diameter | 0.515 INCHES NOMINAL SECOND END SECOND PORTION IN |
| Worm Helix Angle | 4 DEG 52 FT FT |
| Material | STEEL COMP 1144 |
| Worm Thread Quantity | 1 |
| Worm Thread Direction | LEFT-HAND |
| Serration Minor Diameter | 0.500 INCHES NOMINAL SECOND END SECOND PORTION IN |
| Worm Pressure Angle in Deg | 20.000 |
| Worm Body Tapered Bearing Surface End | NOT PROVIDED |
| Straight Unthreaded Length | 0.485 INCHES NOMINAL FIRST END SECOND PORTION IN |
| Straight Unthreaded Length | 0.547 INCHES NOMINAL FIRST END FIRST PORTION IN |
| Straight Unthreaded Length | 5.202 INCHES NOMINAL SECOND END FIRST 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 |
|---|---|
| 687A416P22 PRIMARY | General Electric Company (USA) |
NSN 3040-00-555-4108 is a Worm Shaft, manufactured by General Electric Company, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-555-4108 has 1 manufacturer part number on file: 687A416P22 (General Electric Company).
Key specifications for 687A416P22: Shaft Location: BOTH ENDS OF WORM; FSC Application Data: RADAR SETS,NONAIRBORNE,EXCEPT FIRE CONTROL AND GUIDED MISSILE; Worm Body Length: 1.375 INCHES NOMINAL IN; Worm Thread Lead: 0.261 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.