The Worm Shaft, cataloged under National Stock Number 3040-01-436-0902, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. Government technical data includes 25 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-436-0902 |
| Primary Part Number | 1741AS124-1 |
| Item Name | Worm Shaft |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| Status | ACTIVE |
| Shaft Location | BOTH ENDS OF WORM |
| Teeth Hardness Rating | 58.0 ROCKWELL C MINIMUM AND 62.0 ROCKWELL C MAXIMUM |
| Worm Thread Lead | 0.7666 INCHES NOMINAL IN |
| Worm Pitch Diameter | 2.918 INCHES NOMINAL IN |
| Worm Outside Diameter | 3.4040 INCHES NOMINAL IN |
| Straight Unthreaded Section Diameter | 1.2500 INCHES NOMINAL SECOND END THIRD PORTION IN |
| Straight Unthreaded Section Diameter | 2.9540 INCHES NOMINAL FIRST END SECOND PORTION IN |
| Straight Unthreaded Section Diameter | 3.3480 INCHES NOMINAL SECOND END SECOND PORTION IN |
| Taper Largest Diameter | 3.5000 INCHES NOMINAL FIRST END FIRST PORTION IN |
| Taper Largest Diameter | 4.6250 INCHES NOMINAL SECOND END FIRST PORTION IN |
| Unthreaded Section Keyway Depth | 0.1450 INCHES NOMINAL SECOND END THIRD PORTION IN |
| End Similarity | NOT IDENTICAL |
| Shaft Hardness Rating | 58.0 ROCKWELL C MINIMUM AND 62.0 ROCKWELL C MAXIMUM LOCATION NOT OTHERWISE SPECIFIED |
| Taper Length | 2.8750 INCHES NOMINAL FIRST END FIRST PORTION IN |
| Taper Length | 3.2500 INCHES NOMINAL SECOND END FIRST PORTION IN |
| Worm Helix Angle | 22DEG 59 MIN |
| Material | STEEL |
| Worm Thread Quantity | 1 |
| Worm Thread Direction | RIGHT-HAND |
| Unthreaded Section Keyway Width | 0.2500 INCHES NOMINAL SECOND END THIRD PORTION IN |
| Worm Pressure Angle in Deg | 22.500 |
| Worm Body Tapered Bearing Surface End | NOT PROVIDED |
| Straight Unthreaded Length | 1.2500 INCHES NOMINAL FIRST END SECOND PORTION IN |
| Straight Unthreaded Length | 1.9380 INCHES NOMINAL SECOND END THIRD PORTION IN |
| Straight Unthreaded Length | 2.2500 INCHES NOMINAL SECOND END SECOND 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 |
|---|---|
| 1741AS124-1 | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| 1741AS124 | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| DW0170L-14 | 3/9 Design control — primary reference Imo Industries Inc Delroyd Worm Gear Div |
| WB16996 | D/9 Drawing number reference only Imo Industries Inc Delroyd Worm Gear Div |
NSN 3040-01-436-0902 is a Worm Shaft, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-436-0902 has 2 manufacturer part numbers on file: 1741AS124-1 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier), 1741AS124 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).
Key specifications for 1741AS124-1: Shaft Location: BOTH ENDS OF WORM; Teeth Hardness Rating: 58.0 ROCKWELL C MINIMUM AND 62.0 ROCKWELL C MAXIMUM; Worm Thread Lead: 0.7666 INCHES NOMINAL IN; Overall Length: 18.3120 INCHES NOMINAL IN. 25 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.