The Spring,helical,compression, cataloged under National Stock Number 5360-01-321-8513, 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 11 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5360-01-321-8513 |
| Primary Part Number | 803-5959181 PIECE 291 |
| Item Name | Spring,helical,compression |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Spring Free Outside Diameter | 7.576 INCHES NOMINAL IN |
| Material Hardness Rating | 43.0 ROCKWELL C MINIMUM AND 47.0 ROCKWELL C MAXIMUM |
| End Style | SPRING END,SQUARED AND GROUND BOTH ENDS |
| Spring Solid Length | 10.262 INCHES NOMINAL IN |
| Style Designator | CYLINDRICAL |
| Spring Free Length | 23.387 INCHES NOMINAL IN |
| Inside Diameter | 5.951 INCHES NOMINAL IN |
| Coil Quantity | 13 |
| Surface Treatment | OIL OVERALL |
| Coil Helix Direction | RIGHT-HAND OR LEFT-HAND |
| Material | STEEL OVERALL |
| 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 |
|---|---|
| 803-5959181 PIECE 291 PRIMARY | Naval Sea Systems Command (USA) |
NSN 5360-01-321-8513 is a Spring,helical,compression, manufactured by Naval Sea Systems Command, classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
NSN 5360-01-321-8513 has 1 manufacturer part number on file: 803-5959181 PIECE 291 (Naval Sea Systems Command).
Key specifications for 803-5959181 PIECE 291: Spring Free Outside Diameter: 7.576 INCHES NOMINAL IN; Material Hardness Rating: 43.0 ROCKWELL C MINIMUM AND 47.0 ROCKWELL C MAXIMUM; End Style: SPRING END,SQUARED AND GROUND BOTH ENDS; Spring Solid Length: 10.262 INCHES NOMINAL IN. 11 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.