The Spring,helical,extension, cataloged under National Stock Number 5360-00-663-2019, is classified within Federal Supply Class 5360 (Coil, Flat, Leaf, and Wire Springs) of the Hardware and Abrasives group. The manufacturer of record is Smith and Smith Aircraft Co. Government technical data includes 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5360-00-663-2019 |
| Primary Part Number | 147-31078 |
| Item Name | Spring,helical,extension |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Manufacturer | Smith and Smith Aircraft Co |
| Status | ACTIVE |
| Spring Free Outside Diameter | 0.438 INCHES NOMINAL IN |
| End Style | MACHINED HALF LOOP BOTH ENDS |
| Design Type | CLOSED |
| Style Designator | CYLINDRICAL |
| Opening Width | 0.094 INCHES NOMINAL BOTH ENDS IN |
| Spring Free Length | 1.348 INCHES NOMINAL IN |
| Spring Deflection Rate | 10.300 POUNDS PER INCH NOMINAL LBS |
| Inside Diameter | 0.340 INCHES NOMINAL IN |
| Coil Quantity | 13-3/4 |
| Coil Helix Direction | RIGHT-HAND OR LEFT-HAND |
| Material | STEEL OVERALL |
| Hook Radius | 0.172 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 |
|---|---|
| 147-31078 PRIMARY | Smith and Smith Aircraft Co (USA) |
| Reference | Meaning |
|---|---|
| 147-31078 | 5/9 Secondary reference U.S. Government activity |
NSN 5360-00-663-2019 is a Spring,helical,extension, manufactured by Smith and Smith Aircraft Co, classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
NSN 5360-00-663-2019 has 1 manufacturer part number on file: 147-31078 (Smith and Smith Aircraft Co).
Key specifications for 147-31078: Spring Free Outside Diameter: 0.438 INCHES NOMINAL IN; End Style: MACHINED HALF LOOP BOTH ENDS; Design Type: CLOSED; Style Designator: CYLINDRICAL. 12 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.