The Spring,helical,extension, cataloged under National Stock Number 5360-00-582-7577, is classified within Federal Supply Class 5360 (Coil, Flat, Leaf, and Wire Springs) of the Hardware and Abrasives group. The manufacturer of record is Westinghouse Electric Corp. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 7 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5360-00-582-7577 |
| Primary Part Number | 18D9178H20 |
| Item Name | Spring,helical,extension |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Manufacturer | Westinghouse Electric Corp |
| Status | ACTIVE |
| Spring Free Outside Diameter | 0.313 INCHES NOMINAL IN |
| Load Rating | 4.300 POUNDS NOMINAL LBS |
| End Style | SHORT TWISTED HOOK BOTH ENDS |
| Design Type | CLOSED |
| Style Designator | CYLINDRICAL |
| Spring Free Length | 1.070 INCHES NOMINAL IN |
| Inside Diameter | 0.242 INCHES NOMINAL IN |
| Spring Length Under Load | 1.688 INCHES NOMINAL IN |
| Coil Quantity | 14-1/2 |
| Coil Helix Direction | RIGHT-HAND OR LEFT-HAND |
| Hook Radius | 0.121 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 |
|---|---|
| 904J140PC5U | Westinghouse Electric Corp (USA) |
| 22839-72PC31 | Westinghouse Electric Corp (USA) |
| 22839-1PC27W | Westinghouse Electric Corp (USA) |
| 18D9178H20 PRIMARY | Westinghouse Electric Corp (USA) |
| 445D408SUB1PC20 | Westinghouse Electric Corp (USA) |
| 22839PC27W | Westinghouse Electric Corp (USA) |
| 18D9178PC20 PRIMARY | Westinghouse Electric Corp (USA) |
NSN 5360-00-582-7577 is a Spring,helical,extension, manufactured by Westinghouse Electric Corp, classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
NSN 5360-00-582-7577 has 7 manufacturer part numbers on file: 904J140PC5U (Westinghouse Electric Corp), 22839-72PC31 (Westinghouse Electric Corp), 22839-1PC27W (Westinghouse Electric Corp), 18D9178H20 (Westinghouse Electric Corp), 445D408SUB1PC20 (Westinghouse Electric Corp) and 2 more.
Key specifications for 18D9178H20: Spring Free Outside Diameter: 0.313 INCHES NOMINAL IN; Load Rating: 4.300 POUNDS NOMINAL LBS; End Style: SHORT TWISTED HOOK BOTH ENDS; Design Type: CLOSED. 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.