The Spring,helical,extension, cataloged under National Stock Number 5360-01-510-7683, is classified within Federal Supply Class 5360 (Coil, Flat, Leaf, and Wire Springs) of the Hardware and Abrasives group. Government technical data includes 15 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5360-01-510-7683 |
| Item Name | Spring,helical,extension |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Status | ACTIVE |
| Spring Free Outside Diameter | 0.390 INCHES MAXIMUM IN |
| End Style | REDUCED HOOK BOTH ENDS |
| Design Type | MAINSPRING |
| Style Designator | CYLINDRICAL |
| Opening Width | 1.412 INCHES NOMINAL BOTH ENDS IN |
| Spring Free Length | 3.150 INCHES MINIMUM AND 3.190 INCHES MAXIMUM IN |
| Spring Deflection Rate | 42.700 POUNDS PER INCH NOMINAL LBS |
| Coil to Hook Inside Length | 1.580 INCHES MINIMUM AND 1.620 INCHES MAXIMUM BOTH ENDS IN |
| Inside Diameter | 0.274 INCHES NOMINAL IN |
| Stock Diameter | 0.057 INCHES MINIMUM AND 0.059 INCHES MAXIMUM IN |
| Coil Quantity | 14 |
| Surface Treatment | PASSIVATE OVERALL |
| Coil Helix Direction | RIGHT-HAND OR LEFT-HAND |
| Material | STEEL COMP 316 OR STEEL COMP 302 OR STEEL COMP 304 OVERALL |
| Hook Radius | 0.055 INCHES MINIMUM AND 0.075 INCHES MAXIMUM 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 |
|---|---|
| 428179-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5360-01-510-7683 is a Spring,helical,extension, classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
Key specifications for 5360-01-510-7683: Spring Free Outside Diameter: 0.390 INCHES MAXIMUM IN; End Style: REDUCED HOOK BOTH ENDS; Design Type: MAINSPRING; Style Designator: CYLINDRICAL. 15 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.