The Spring,helical,extension, cataloged under National Stock Number 5360-01-388-7029, is classified within Federal Supply Class 5360 (Coil, Flat, Leaf, and Wire Springs) of the Hardware and Abrasives group. The manufacturer of record is Matthew Warren, Inc. Dba Century Spring Corp. Div Century Spring Corp.. Government technical data includes 13 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 | 5360-01-388-7029 |
| Primary Part Number | S-588 |
| Item Name | Spring,helical,extension |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Manufacturer | Matthew Warren, Inc. Dba Century Spring Corp. Div Century Spring Corp. |
| Status | ACTIVE |
| Spring Free Outside Diameter | 0.562 INCHES NOMINAL IN |
| Load Rating | 10.20 POUNDS NOMINAL LBS |
| End Style | SHORT TWISTED HOOK BOTH ENDS |
| Design Type | CLOSED |
| Style Designator | CYLINDRICAL |
| Spring Free Length | 2.750 INCHES NOMINAL IN |
| Spring Deflection Rate | 2.050 POUNDS PER INCH NOMINAL LBS |
| Coil to Hook Inside Length | 0.418 INCHES NOMINAL BOTH ENDS IN |
| Inside Diameter | 0.418 INCHES NOMINAL IN |
| Coil Quantity | 28 |
| Coil Helix Direction | RIGHT-HAND |
| Material | STEEL CORROSION RESISTING OVERALL |
| Hook Radius | 0.209 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 |
|---|---|
| S-588 PRIMARY | Matthew Warren, Inc. Dba Century Spring Corp. Div Century Spring Corp. (USA) |
NSN 5360-01-388-7029 is a Spring,helical,extension, manufactured by Matthew Warren, Inc. Dba Century Spring Corp. Div Century Spring Corp., classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
NSN 5360-01-388-7029 has 1 manufacturer part number on file: S-588 (Matthew Warren, Inc. Dba Century Spring Corp. Div Century Spring Corp.).
Key specifications for S-588: Spring Free Outside Diameter: 0.562 INCHES NOMINAL IN; Load Rating: 10.20 POUNDS NOMINAL LBS; End Style: SHORT TWISTED HOOK BOTH ENDS; Design Type: CLOSED. 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.