The Spring,helical,compression, cataloged under National Stock Number 5360-00-589-4307, is classified within Federal Supply Class 5360 (Coil, Flat, Leaf, and Wire Springs) of the Hardware and Abrasives group. The manufacturer of record is Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp. Government technical data includes 10 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 | 5360-00-589-4307 |
| Primary Part Number | S1640-63528 |
| Item Name | Spring,helical,compression |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Manufacturer | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
| Status | ACTIVE |
| Spring Free Outside Diameter | 0.570 INCHES NOMINAL IN |
| End Style | SPRING END,SQUARED AND GROUND BOTH ENDS |
| Style Designator | CYLINDRICAL |
| Material Document and Classification | MIL-S-8696,COND A2-CANCELED MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Spring Free Length | 5.570 INCHES NOMINAL IN |
| Inside Diameter | 0.370 INCHES NOMINAL IN |
| Coil Quantity | 37 |
| Surface Treatment | CADMIUM OVERALL |
| Coil Helix Direction | 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 |
|---|---|
| S1640-63528 PRIMARY | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
NSN 5360-00-589-4307 is a Spring,helical,compression, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
NSN 5360-00-589-4307 has 1 manufacturer part number on file: S1640-63528 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp).
Key specifications for S1640-63528: Spring Free Outside Diameter: 0.570 INCHES NOMINAL IN; End Style: SPRING END,SQUARED AND GROUND BOTH ENDS; Style Designator: CYLINDRICAL; Material Document and Classification: MIL-S-8696,COND A2-CANCELED MIL SPEC SINGLE MATERIAL RESPONSE OVERALL. 10 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.