The Spring,helical,extension, cataloged under National Stock Number 5360-01-503-3986, is classified within Federal Supply Class 5360 (Coil, Flat, Leaf, and Wire Springs) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5360-01-503-3986 |
| Primary Part Number | 124-6938645 PART 182 |
| Item Name | Spring,helical,extension |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Spring Free Outside Diameter | 1.688 INCHES NOMINAL IN |
| End Style | FULL LOOP BOTH ENDS |
| Design Type | MAINSPRING |
| Style Designator | CYLINDRICAL W/ CONVEX ENDS |
| Opening Width | 0.4375 INCHES NOMINAL BOTH ENDS IN |
| Material Document and Classification | ASTM A313 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Spring Free Length | 10.000 INCHES NOMINAL IN |
| Spring Deflection Rate | 10.000 POUNDS PER INCH NOMINAL LBS |
| Coil to Hook Inside Length | 1.750 INCHES NOMINAL BOTH ENDS IN |
| Coil Quantity | 35.5 |
| Coil Helix Direction | LEFT-HAND OR RIGHT-HAND |
| Material | STEEL COMP 316 OVERALL |
| Hook Radius | 0.500 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 |
| Part Number | Manufacturer |
|---|---|
| 124-6938645 PART 182 PRIMARY | Naval Sea Systems Command (USA) |
| 124-6938645 PART 182 | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
NSN 5360-01-503-3986 is a Spring,helical,extension, manufactured by Naval Sea Systems Command, classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
NSN 5360-01-503-3986 has 2 manufacturer part numbers on file: 124-6938645 PART 182 (Naval Sea Systems Command), 124-6938645 PART 182 (Huntington Ingalls Inc Div Newport News Shipbuilding).
Key specifications for 124-6938645 PART 182: Spring Free Outside Diameter: 1.688 INCHES NOMINAL IN; End Style: FULL LOOP BOTH ENDS; Design Type: MAINSPRING; Style Designator: CYLINDRICAL W/ CONVEX ENDS. 13 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.