The Spring,helical,extension, cataloged under National Stock Number 5360-00-666-2606, is classified within Federal Supply Class 5360 (Coil, Flat, Leaf, and Wire Springs) of the Hardware and Abrasives group. The manufacturer of record is Ward Leonard Ct Llc. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5360-00-666-2606 |
| Primary Part Number | 16570-5-1 |
| Item Name | Spring,helical,extension |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Manufacturer | Ward Leonard Ct Llc |
| Status | ACTIVE |
| Spring Free Outside Diameter | 0.625 INCHES NOMINAL IN |
| Load Rating | 5.000 POUNDS NOMINAL LBS |
| End Style | RAISED HOOK BOTH ENDS |
| Design Type | CLOSED |
| Style Designator | CYLINDRICAL |
| Opening Width | 0.09375 INCHES NOMINAL BOTH ENDS IN |
| Spring Free Length | 1.375 INCHES NOMINAL IN |
| Spring Deflection Rate | 8.000 POUNDS PER INCH NOMINAL LBS |
| Inside Diameter | 0.484375 INCHES NOMINAL IN |
| Spring Length Under Load | 2.125 INCHES NOMINAL IN |
| Coil Quantity | 14 |
| Surface Treatment | CADMIUM OVERALL |
| Coil Helix Direction | RIGHT-HAND OR LEFT-HAND |
| Material | STEEL OVERALL |
| Hook Radius | 0.125 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 |
|---|---|
| 17422-2ITEM1L | Ward Leonard Ct Llc (USA) |
| 16570-5-1 PRIMARY | Ward Leonard Ct Llc (USA) |
| 17422ITEM1L | Ward Leonard Ct Llc (USA) |
| 17421ITEM1K | Ward Leonard Ct Llc (USA) |
NSN 5360-00-666-2606 is a Spring,helical,extension, manufactured by Ward Leonard Ct Llc, classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
NSN 5360-00-666-2606 has 4 manufacturer part numbers on file: 17422-2ITEM1L (Ward Leonard Ct Llc), 16570-5-1 (Ward Leonard Ct Llc), 17422ITEM1L (Ward Leonard Ct Llc), 17421ITEM1K (Ward Leonard Ct Llc).
Key specifications for 16570-5-1: Spring Free Outside Diameter: 0.625 INCHES NOMINAL IN; Load Rating: 5.000 POUNDS NOMINAL LBS; End Style: RAISED HOOK BOTH ENDS; Design Type: CLOSED. 15 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.