The Shaft Assembly,flexible, cataloged under National Stock Number 3040-00-420-5474, 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 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-420-5474 |
| Primary Part Number | 64A98C71-1 |
| Item Name | Shaft Assembly,flexible |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| Status | ACTIVE |
| Cross Section Size and Location | 0.104 INCHES NOMINAL ACROSS FLATS BOTH ENDS IN |
| End Overall Diameter | 1.000 INCHES NOMINAL BOTH ENDS IN |
| End Connection Type | THREADED INTERNAL FIRST END |
| Thread Depth | 0.250 INCHES NOMINAL BOTH ENDS IN |
| Thread Location | INTERNAL FIRST END |
| Core Diameter | 0.130 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND FIRST END |
| Casing Length Between Ferrules | 49.000 INCHES NOMINAL IN |
| Core Rotation Direction | CLOCKWISE |
| Core Removability | REMOVABLE |
| Core Overall Length | 50.000 INCHES NOMINAL IN |
| Screw Thread Series Designator | UNS BOTH ENDS |
| Surface Treatment | CADMIUM CORE |
| Surface Treatment | ZINC CASING |
| Protective Coating Method | COATED CASING |
| Wrenching Facility Outside Diameter | 0.875 INCHES NOMINAL BOTH ENDS IN |
| Thread Class | 2A FIRST END A |
| Wrenching Facility Type | KNURLED SURFACE FIRST END |
| Material | STEEL CORE |
| Material | STEEL CASING |
| Casing Outside Diameter | 0.243 INCHES NOMINAL IN |
| Minimum Operating Radius | 3.000 INCHES IN |
| End Type | ROUND KEYED FIRST END |
| Tip Length | 49.500 INCHES NOMINAL BOTH ENDS 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 |
|---|---|
| 64A98C71-1 | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| 446140-50 | 3/9 Design control — primary reference Stewart-Warner Corporation |
| 64A98C71-1 | 5/9 Secondary reference Gse Production and Support Llc Dba Gse Spares |
| 64A98C71-1 | 5/9 Secondary reference U.S. Government activity |
NSN 3040-00-420-5474 is a Shaft Assembly,flexible, 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 3040-00-420-5474 has 1 manufacturer part number on file: 64A98C71-1 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).
Key specifications for 64A98C71-1: Cross Section Size and Location: 0.104 INCHES NOMINAL ACROSS FLATS BOTH ENDS IN; End Overall Diameter: 1.000 INCHES NOMINAL BOTH ENDS IN; End Connection Type: THREADED INTERNAL FIRST END; Thread Depth: 0.250 INCHES NOMINAL BOTH ENDS 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.