The Spring,helical,extension, cataloged under National Stock Number 5360-00-809-0403, is classified within Federal Supply Class 5360 (Coil, Flat, Leaf, and Wire Springs) of the Hardware and Abrasives group. Government technical data includes 16 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5360-00-809-0403 |
| Item Name | Spring,helical,extension |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Status | ACTIVE |
| Spring Free Outside Diameter | 0.720 INCHES NOMINAL IN |
| Load Rating | 58.410 POUNDS NOMINAL LBS |
| End Style | RAISED HOOK BOTH ENDS |
| Design Type | CLOSED |
| Style Designator | CYLINDRICAL |
| Opening Width | 1.350 INCHES NOMINAL BOTH ENDS IN |
| Material Document and Classification | QQ-W-470 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Spring Free Length | 8.860 INCHES NOMINAL IN |
| Spring Deflection Rate | 12.300 POUNDS PER INCH NOMINAL LBS |
| Coil to Hook Inside Length | 1.800 INCHES NOMINAL BOTH ENDS IN |
| Spring Length Under Load | 12.680 INCHES NOMINAL IN |
| Coil Quantity | 49-1/2 |
| Surface Treatment | CADMIUM OVERALL |
| Coil Helix Direction | RIGHT-HAND OR LEFT-HAND |
| Material | STEEL UNS K08500 OVERALL |
| Hook Radius | 0.260 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 |
| Reference | Meaning |
|---|---|
| 300-337112 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 300-337112 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5360-00-809-0403 is a Spring,helical,extension, classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
Key specifications for 5360-00-809-0403: Spring Free Outside Diameter: 0.720 INCHES NOMINAL IN; Load Rating: 58.410 POUNDS NOMINAL LBS; End Style: RAISED HOOK BOTH ENDS; Design Type: CLOSED. 16 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.