The Worm Shaft, cataloged under National Stock Number 3040-01-256-7956, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 14 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 | 3040-01-256-7956 |
| Primary Part Number | 75D131031-2001 |
| Item Name | Worm Shaft |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Shaft Location | BOTH ENDS OF WORM |
| Worm Pitch Diameter | 0.559 INCHES NOMINAL IN |
| Worm Outside Diameter | 0.625 INCHES NOMINAL IN |
| Straight Unthreaded Section Diameter | 0.625 INCHES NOMINAL SECOND END IN |
| Straight Unthreaded Section Diameter | 0.470 INCHES NOMINAL FIRST END IN |
| Unthreaded Section Pin Hole Diameter | 0.2500 INCHES NOMINAL SECOND END IN |
| Unthreaded Section Pin Hole Diameter | 0.1920 INCHES NOMINAL FIRST END IN |
| End Similarity | NOT IDENTICAL |
| Worm Thread Section Length | 10.030 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING |
| Worm Thread Quantity | 8 |
| Worm Thread Direction | RIGHT-HAND |
| Straight Unthreaded Length | 6.000 INCHES NOMINAL SECOND END IN |
| Straight Unthreaded Length | 0.720 INCHES NOMINAL FIRST END 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 |
|---|---|
| 75D131031-2001 PRIMARY | The Boeing Company Div Defense (USA) |
NSN 3040-01-256-7956 is a Worm Shaft, manufactured by The Boeing Company Div Defense, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-256-7956 has 1 manufacturer part number on file: 75D131031-2001 (The Boeing Company Div Defense).
Key specifications for 75D131031-2001: Shaft Location: BOTH ENDS OF WORM; Overall Length: 19.000 INCHES NOMINAL IN; Worm Pitch Diameter: 0.559 INCHES NOMINAL IN; Worm Outside Diameter: 0.625 INCHES NOMINAL IN. 14 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.