The Spring,helical,extension, cataloged under National Stock Number 5360-01-407-9521, is classified within Federal Supply Class 5360 (Coil, Flat, Leaf, and Wire Springs) of the Hardware and Abrasives group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5360-01-407-9521 |
| Item Name | Spring,helical,extension |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Status | ACTIVE |
| Spring Free Outside Diameter | 1.500 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-35, TY VI FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| End Style | SHORT TWISTED HOOK BOTH ENDS |
| Style Designator | CYLINDRICAL |
| Material Document and Classification | ASTM A313 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Spring Free Length | 4.500 INCHES NOMINAL IN |
| Coil to Hook Inside Length | 0.470 INCHES MINIMUM AND 0.530 INCHES MAXIMUM BOTH ENDS IN |
| Inside Diameter | 1.146 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL |
| Coil Helix Direction | RIGHT-HAND OR LEFT-HAND |
| Material | STEEL COMP 302 OVERALL |
| Hook Radius | 0.573 INCHES NOMINAL BOTH ENDS IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 13385845 | 5/9 Secondary reference Us Army Aviation and Missile Command |
| E1500-177-4500S | 3/2 Design control — primary reference U.S. Government activity |
NSN 5360-01-407-9521 is a Spring,helical,extension, classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
Key specifications for 5360-01-407-9521: Spring Free Outside Diameter: 1.500 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-35, TY VI FED SPEC SINGLE TREATMENT RESPONSE OVERALL; End Style: SHORT TWISTED HOOK BOTH ENDS; 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.
NSN 5360-01-407-9521 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.