The Spring,helical,extension, cataloged under National Stock Number 5360-00-300-5603, 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 14 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5360-00-300-5603 |
| Primary Part Number | 50400A37 |
| 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 | 0.219 INCHES NOMINAL IN |
| End Style | RAISED HOOK BOTH ENDS |
| Design Type | CLOSED |
| Style Designator | CYLINDRICAL |
| Opening Width | 0.188 INCHES NOMINAL FIRST END IN |
| Opening Width | 0.594 INCHES NOMINAL BOTH ENDS IN |
| Spring Free Length | 2.419 INCHES NOMINAL IN |
| Coil to Hook Inside Length | 0.812 INCHES NOMINAL SECOND END IN |
| Coil to Hook Inside Length | 0.312 INCHES NOMINAL FIRST END IN |
| Inside Diameter | 0.175 INCHES NOMINAL IN |
| Coil Quantity | 56-3/4 |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 50400A37 PRIMARY | L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc. (USA) |
NSN 5360-00-300-5603 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 5360-00-300-5603 has 1 manufacturer part number on file: 50400A37 (L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc.).
Key specifications for 50400A37: Spring Free Outside Diameter: 0.219 INCHES NOMINAL IN; End Style: RAISED HOOK BOTH ENDS; Design Type: CLOSED; Style Designator: CYLINDRICAL. 14 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.