The Spring,helical,extension, cataloged under National Stock Number 5360-00-740-9447, is classified within Federal Supply Class 5360 (Coil, Flat, Leaf, and Wire Springs) of the Hardware and Abrasives group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 16 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5360-00-740-9447 |
| Primary Part Number | 7409447 |
| Item Name | Spring,helical,extension |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Spring Free Outside Diameter | 0.8555 INCHES NOMINAL IN |
| Load Rating | 47.000 POUNDS NOMINAL LBS |
| End Style | RAISED HOOK BOTH ENDS |
| Design Type | CLOSED |
| Style Designator | CYLINDRICAL |
| Opening Width | 1.062 INCHES NOMINAL BOTH ENDS IN |
| Opening Width | 0.312 INCHES NOMINAL FIRST END IN |
| Spring Free Length | 6.461 INCHES NOMINAL IN |
| Coil to Hook Inside Length | 1.562 INCHES NOMINAL SECOND END IN |
| Coil to Hook Inside Length | 0.688 INCHES NOMINAL FIRST END IN |
| Inside Diameter | 0.6444 INCHES NOMINAL IN |
| Spring Length Under Load | 9.500 INCHES NOMINAL IN |
| Coil Quantity | 38 |
| Coil Helix Direction | RIGHT-HAND OR LEFT-HAND |
| Material | STEEL OVERALL |
| Hook Radius | 0.312 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 |
|---|---|
| 7409447 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| KC6401 | 5/9 Secondary reference Diamond Reo Truck Co |
| 43229H | 5/9 Secondary reference International Harvester Co Agricultural Equipment Div |
| 43229H | 5/9 Secondary reference Navistar International Corporation Dba Navistar |
| 5360007409447 | 5/9 Secondary reference E.c.a Etablissement Centrald'approvisionnement Des Forces Armee |
NSN 5360-00-740-9447 is a Spring,helical,extension, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
NSN 5360-00-740-9447 has 1 manufacturer part number on file: 7409447 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 7409447: Spring Free Outside Diameter: 0.8555 INCHES NOMINAL IN; Load Rating: 47.000 POUNDS NOMINAL LBS; End Style: RAISED HOOK BOTH ENDS; Design Type: CLOSED. 16 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.