The Spring,helical,torsion, cataloged under National Stock Number 5360-01-439-4825, 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5360-01-439-4825 |
| Primary Part Number | 12390075 |
| Item Name | Spring,helical,torsion |
| 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 | 0.735 INCHES MINIMUM AND 0.765 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | MIL-S-171, 5.3.1.1 OR 5.3.2.1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| End Style | ONE HOOK END BOTH ENDS |
| End Length | 0.620 INCHES MINIMUM AND 0.740 INCHES MAXIMUM SECOND END IN |
| End Length | 0.630 INCHES MINIMUM AND 0.750 INCHES MAXIMUM FIRST END IN |
| Style Designator | SINGLE TORSION LEFT HAND |
| Material Document and Classification | ASTM-A228 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Spring Free Length | 0.280 INCHES MINIMUM AND 0.400 INCHES MAXIMUM IN |
| Spring Deflection Rate | 0.019 POUNDS PER INCH NOMINAL LBS |
| Inside Diameter | 0.660 INCHES NOMINAL IN |
| Stock Diameter | 0.045 INCHES NOMINAL IN |
| Coil Quantity | 5-1/4 |
| Surface Treatment | PHOSPHATE MANGANESE OR PHOSPHATE ZINC OVERALL |
| Coil Helix Direction | LEFT-HAND |
| Material | STEEL UNS K08500 OVERALL |
| End Angular Relationship | ENDS ANGLED ONE TO OTHER |
| 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 |
|---|---|
| 12390075 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 5360-01-439-4825 is a Spring,helical,torsion, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
NSN 5360-01-439-4825 has 1 manufacturer part number on file: 12390075 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12390075: Spring Free Outside Diameter: 0.735 INCHES MINIMUM AND 0.765 INCHES MAXIMUM IN; Surface Treatment Document and Classification: MIL-S-171, 5.3.1.1 OR 5.3.2.1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; End Style: ONE HOOK END BOTH ENDS; End Length: 0.620 INCHES MINIMUM AND 0.740 INCHES MAXIMUM SECOND END IN. 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.