The Spring,helical,extension, cataloged under National Stock Number 5360-00-974-7556, 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15 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5360-00-974-7556 |
| Item Name | Spring,helical,extension |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Status | ACTIVE |
| Spring Free Outside Diameter | 0.500 INCHES NOMINAL IN |
| Load Rating | 5.90 POUNDS NOMINAL LBS |
| End Style | SWIVEL HOOK BOTH ENDS |
| Design Type | CLOSED |
| Style Designator | CYLINDRICAL W/ CONVEX ENDS |
| Opening Width | 0.380 INCHES NOMINAL BOTH ENDS IN |
| Material Document and Classification | FED STD 66/AISI FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Spring Free Length | 5.832 INCHES NOMINAL IN |
| Coil to Hook Inside Length | 0.750 INCHES NOMINAL FIRST END IN |
| Coil to Hook Inside Length | 1.810 INCHES NOMINAL SECOND END IN |
| Spring Length Under Load | 7.410 INCHES NOMINAL IN |
| Coil Quantity | 50 |
| Coil Helix Direction | RIGHT-HAND |
| Material | STEEL COMP 302 OVERALL |
| Hook Radius | 0.190 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 |
|---|---|
| 58AX218 | 5/9 Secondary reference U.S. Government activity |
| 58AX218 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5360-00-974-7556 is a Spring,helical,extension, classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
Key specifications for 5360-00-974-7556: Spring Free Outside Diameter: 0.500 INCHES NOMINAL IN; Load Rating: 5.90 POUNDS NOMINAL LBS; End Style: SWIVEL HOOK BOTH ENDS; Design Type: CLOSED. 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.