The Spring,helical,extension, cataloged under National Stock Number 5360-01-491-5050, 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16 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5360-01-491-5050 |
| Item Name | Spring,helical,extension |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Status | ACTIVE |
| Spring Free Outside Diameter | 0.750 INCHES NOMINAL IN |
| Load Rating | 30.820 POUNDS NOMINAL LBS |
| End Style | SHORT TWISTED HOOK BOTH ENDS |
| Design Type | CLOSED |
| Style Designator | CYLINDRICAL |
| Material Document and Classification | ASTM A313 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5688 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Spring Free Length | 4.500 INCHES NOMINAL IN |
| Spring Deflection Rate | 20.325 POUNDS PER INCH NOMINAL LBS |
| Coil to Hook Inside Length | 0.580 INCHES NOMINAL BOTH ENDS IN |
| Inside Diameter | 0.580 INCHES NOMINAL IN |
| Stock Diameter | 0.085 INCHES NOMINAL IN |
| Spring Length Under Load | 3.400 INCHES NOMINAL IN |
| Coil Helix Direction | LEFT-HAND OR RIGHT-HAND |
| Material | STEEL COMP 302 OVERALL |
| End Angular Relationship | ENDS PARALLEL ONE TO OTHER |
| Hook Radius | 0.290 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 |
|---|---|
| E0750-085-4500S | 3/2 Design control — primary reference U.S. Government activity |
| 10638845 | 7/2 Vendor item drawing reference General Dynamics Land Systems Canadacorp |
NSN 5360-01-491-5050 is a Spring,helical,extension, classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
Key specifications for 5360-01-491-5050: Spring Free Outside Diameter: 0.750 INCHES NOMINAL IN; Load Rating: 30.820 POUNDS NOMINAL LBS; End Style: SHORT TWISTED 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.