The Spring,helical,extension, cataloged under National Stock Number 5360-00-418-7436, is classified within Federal Supply Class 5360 (Coil, Flat, Leaf, and Wire Springs) of the Hardware and Abrasives group. The manufacturer of record is Fmc 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5360-00-418-7436 |
| Primary Part Number | 2528928 |
| Item Name | Spring,helical,extension |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Manufacturer | Fmc Corp |
| Status | ACTIVE |
| Spring Free Outside Diameter | 1.000 INCHES MINIMUM AND 1.020 INCHES MAXIMUM IN |
| Load Rating | 32.00 POUNDS NOMINAL LBS |
| End Style | MACHINED HALF LOOP BOTH ENDS |
| Design Type | CLOSED |
| Style Designator | CYLINDRICAL |
| Material Document and Classification | QQ-W-423 FED SPEC ALL MATERIAL RESPONSES OVERALL |
| Spring Free Length | 3.934 INCHES NOMINAL IN |
| Inside Diameter | 0.816 INCHES MINIMUM AND 0.836 INCHES MAXIMUM IN |
| Spring Length Under Load | 8.250 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL |
| Coil Helix Direction | RIGHT-HAND OR LEFT-HAND |
| Material | STEEL COMP 302 AND STEEL COMP 316 OVERALL |
| Hook Radius | 0.3125 INCHES MINIMUM 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 |
|---|---|
| 2528928 PRIMARY | Fmc Corp (USA) |
| Reference | Meaning |
|---|---|
| 2528928 | 5/2 Secondary reference U.S. Government activity |
NSN 5360-00-418-7436 is a Spring,helical,extension, manufactured by Fmc Corp, classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
NSN 5360-00-418-7436 has 1 manufacturer part number on file: 2528928 (Fmc Corp).
1 possible match (shared part number, not a government interchangeability claim): 5365-01-594-7153. Verify interchangeability with system specifications before substitution.
Key specifications for 2528928: Spring Free Outside Diameter: 1.000 INCHES MINIMUM AND 1.020 INCHES MAXIMUM IN; Load Rating: 32.00 POUNDS NOMINAL LBS; End Style: MACHINED HALF LOOP 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.