The Nut,coupling,flexible Casing, cataloged under National Stock Number 3040-01-383-5568, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 6 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-383-5568 |
| Item Name | Nut,coupling,flexible Casing |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Thread Length | 1.060 INCHES NOMINAL IN |
| Outside Diameter | 4.500 INCHES NOMINAL IN |
| Seat End Inside Diameter | 3.250 INCHES NOMINAL IN |
| Thread Direction | LEFT-HAND |
| Thread Size | A3.250-16 |
| Screw Thread Series Designator | UN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 12814C18 | 3/9 Design control — primary reference U.S. Government activity |
| PL-12731F18ITEM164B | 5/9 Secondary reference U.S. Government activity |
| PL-12731F18ITEM164B | C/1 Advisory reference — outside the item-of-supply concept Curtiss-Wright Electro-Mechanical Corporation Div Epd |
| 12814C18 | C/1 Advisory reference — outside the item-of-supply concept Curtiss-Wright Electro-Mechanical Corporation Div Epd |
NSN 3040-01-383-5568 is a Nut,coupling,flexible Casing, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
Key specifications for 3040-01-383-5568: Thread Length: 1.060 INCHES NOMINAL IN; Overall Length: 1.060 INCHES NOMINAL IN; Outside Diameter: 4.500 INCHES NOMINAL IN; Seat End Inside Diameter: 3.250 INCHES NOMINAL IN. 6 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.