The Spring,helical,extension, cataloged under National Stock Number 5360-01-527-6618, is classified within Federal Supply Class 5360 (Coil, Flat, Leaf, and Wire Springs) of the Hardware and Abrasives group. The manufacturer of record is Barnes Group Inc.. Government technical data includes 7 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5360-01-527-6618 |
| Primary Part Number | E0500-055-3500S |
| Item Name | Spring,helical,extension |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Manufacturer | Barnes Group Inc. |
| Status | ACTIVE |
| Spring Free Outside Diameter | 0.500 INCHES NOMINAL IN |
| Style Designator | CYLINDRICAL |
| Spring Free Length | 3.500 INCHES NOMINAL IN |
| Spring Deflection Rate | 3.200 POUNDS PER INCH NOMINAL LBS |
| Inside Diameter | 0.390 INCHES NOMINAL IN |
| Stock Diameter | 0.055 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING 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 |
|---|---|
| E0500-055-3500S PRIMARY | Barnes Group Inc. (USA) |
| Reference | Meaning |
|---|---|
| 20729152 FIND NO. 8 | 5/2 Secondary reference U.S. Government activity |
| 174981 | 5/2 Secondary reference U.S. Government activity |
NSN 5360-01-527-6618 is a Spring,helical,extension, manufactured by Barnes Group Inc., classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
NSN 5360-01-527-6618 has 1 manufacturer part number on file: E0500-055-3500S (Barnes Group Inc.).
Key specifications for E0500-055-3500S: Spring Free Outside Diameter: 0.500 INCHES NOMINAL IN; Style Designator: CYLINDRICAL; Spring Free Length: 3.500 INCHES NOMINAL IN; Spring Deflection Rate: 3.200 POUNDS PER INCH NOMINAL LBS. 7 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.