The Extension Shaft, cataloged under National Stock Number 3040-01-206-1556, 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 5 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-206-1556 |
| Primary Part Number | 653D760P-1 |
| Item Name | Extension Shaft |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | General Electric Company |
| Status | ACTIVE |
| Length | 57.000 INCHES NOMINAL IN |
| Outside Diameter | 6.000 INCHES NOMINAL IN |
| Bore Diameter | 2.750 INCHES NOMINAL IN |
| Material | STEEL |
| End Type | DETACHABLE COUPLING |
| 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 |
|---|---|
| 653D760P-1 PRIMARY | General Electric Company (USA) |
| 418L417 ITEM 31 | General Electric Company (USA) |
| 7518E42 PIECE 91 | General Electric Company (USA) |
| Reference | Meaning |
|---|---|
| 7518E42 | D/9 Drawing number reference only General Electric Company |
| 418L417 | D/9 Drawing number reference only General Electric Company |
NSN 3040-01-206-1556 is a Extension Shaft, manufactured by General Electric Company, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-206-1556 has 3 manufacturer part numbers on file: 653D760P-1 (General Electric Company), 418L417 ITEM 31 (General Electric Company), 7518E42 PIECE 91 (General Electric Company).
3 possible matches (shared part number, not a government interchangeability claim): 3010-01-289-1340, 3010-01-291-5281, 6115-01-431-8262. Verify interchangeability with system specifications before substitution.
Key specifications for 653D760P-1: Length: 57.000 INCHES NOMINAL IN; Outside Diameter: 6.000 INCHES NOMINAL IN; Bore Diameter: 2.750 INCHES NOMINAL IN; Material: STEEL. 5 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.