The Spring,helical,torsion, cataloged under National Stock Number 5360-01-086-3228, 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 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5360-01-086-3228 |
| Primary Part Number | 12277521 |
| 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 | 2.250 INCHES NOMINAL IN |
| End Style | STRAIGHT ANGULAR END OVERALL |
| End Length | 1.620 INCHES NOMINAL BOTH ENDS IN |
| Style Designator | SINGLE TORSION LEFT HAND |
| Spring Free Length | 8.440 INCHES MINIMUM AND 8.620 INCHES MAXIMUM IN |
| Inside Diameter | 1.750 INCHES NOMINAL IN |
| End Length From First Bend to Second Bend or End | 1.620 INCHES NOMINAL OVERALL IN |
| Coil Quantity | 14-1/4 |
| Surface Treatment | CADMIUM OVERALL |
| Coil Helix Direction | RIGHT-HAND |
| End Length From Second Bend to Third Bend or End | 1.620 INCHES NOMINAL OVERALL IN |
| End Angular Relationship | ENDS PARALLEL 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 |
|---|---|
| 12277521 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 12277521 | 5/9 Secondary reference Drs Sustainment Systems, Inc. |
NSN 5360-01-086-3228 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 5360-01-086-3228 has 1 manufacturer part number on file: 12277521 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12277521: Spring Free Outside Diameter: 2.250 INCHES NOMINAL IN; End Style: STRAIGHT ANGULAR END OVERALL; End Length: 1.620 INCHES NOMINAL BOTH ENDS IN; Style Designator: SINGLE TORSION LEFT HAND. 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.