The Spring,helical,extension, cataloged under National Stock Number 5360-01-479-7728, is classified within Federal Supply Class 5360 (Coil, Flat, Leaf, and Wire Springs) of the Hardware and Abrasives group. The manufacturer of record is Appleton Marine Inc. Government technical data includes 12 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5360-01-479-7728 |
| Primary Part Number | AMD-1403 ITEM 79 |
| Item Name | Spring,helical,extension |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Manufacturer | Appleton Marine Inc |
| Status | ACTIVE |
| Spring Free Outside Diameter | 0.492 INCHES MINIMUM AND 0.508 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | ASTMB633 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| End Style | SHORT TWISTED HOOK BOTH ENDS |
| Design Type | MAINSPRING |
| Style Designator | CYLINDRICAL |
| Material Document and Classification | ASTMB228 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Spring Free Length | 2.360 INCHES NOMINAL IN |
| Spring Deflection Rate | 6.100 POUNDS PER INCH NOMINAL LBS |
| Inside Diameter | 0.390 INCHES NOMINAL IN |
| Surface Treatment | ZINC OVERALL |
| Coil Helix Direction | LEFT-HAND |
| Material | STEEL UNS K08500 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 |
|---|---|
| AMD-1403 ITEM 79 PRIMARY | Appleton Marine Inc (USA) |
| 9433K82 | Mcmaster-Carr Supply Co (USA) |
NSN 5360-01-479-7728 is a Spring,helical,extension, manufactured by Appleton Marine Inc, classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
NSN 5360-01-479-7728 has 2 manufacturer part numbers on file: AMD-1403 ITEM 79 (Appleton Marine Inc), 9433K82 (Mcmaster-Carr Supply Co).
Key specifications for AMD-1403 ITEM 79: Spring Free Outside Diameter: 0.492 INCHES MINIMUM AND 0.508 INCHES MAXIMUM IN; Surface Treatment Document and Classification: ASTMB633 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; End Style: SHORT TWISTED HOOK BOTH ENDS; Design Type: MAINSPRING. 12 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.