The Spring,helical,extension, cataloged under National Stock Number 5360-00-308-7372, is classified within Federal Supply Class 5360 (Coil, Flat, Leaf, and Wire Springs) of the Hardware and Abrasives group. The manufacturer of record is L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc.. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 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 | 5360-00-308-7372 |
| Primary Part Number | 50407C63 |
| Item Name | Spring,helical,extension |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Manufacturer | L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc. |
| Status | ACTIVE |
| Spring Free Outside Diameter | 0.567 INCHES NOMINAL IN |
| End Style | MACHINE CUT-OFF BOTH ENDS |
| Style Designator | CYLINDRICAL |
| Spring Deflection Rate | 121000.000 POUNDS PER INCH NOMINAL LBS |
| Inside Diameter | 0.437 INCHES NOMINAL IN |
| Stock Diameter | 0.065 INCHES NOMINAL IN |
| Coil Quantity | 27 |
| Surface Treatment | CADMIUM OVERALL |
| Coil Helix Direction | RIGHT-HAND OR LEFT-HAND |
| Material | STEEL OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 5360-00-308-7372 is a Spring,helical,extension, manufactured by L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc., classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
NSN 5360-00-308-7372 has 2 manufacturer part numbers on file: 50407C63 (L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc.), 50403C63 (L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 5360-01-494-4216. Verify interchangeability with system specifications before substitution.
Key specifications for 50407C63: Spring Free Outside Diameter: 0.567 INCHES NOMINAL IN; End Style: MACHINE CUT-OFF BOTH ENDS; Style Designator: CYLINDRICAL; Spring Deflection Rate: 121000.000 POUNDS PER INCH NOMINAL LBS. 10 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.