The Spring,helical,torsion, cataloged under National Stock Number 5360-00-421-5129, is classified within Federal Supply Class 5360 (Coil, Flat, Leaf, and Wire Springs) of the Hardware and Abrasives group. Government technical data includes 18 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5360-00-421-5129 |
| Item Name | Spring,helical,torsion |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Status | ACTIVE |
| Spring Free Outside Diameter | 0.662 INCHES NOMINAL IN |
| End Style | SINGLE END BOTH ENDS |
| End Length | 0.500 INCHES NOMINAL SECOND END IN |
| End Length | 0.750 INCHES NOMINAL FIRST END IN |
| Style Designator | SINGLE TORSION LEFT HAND |
| Material Document and Classification | QQ-W-423,FORM 1,COND B FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Spring Free Length | 0.438 INCHES NOMINAL IN |
| Spring Deflection Rate | 0.800 POUNDS PER INCH NOMINAL LBS |
| Inside Diameter | 0.562 INCHES NOMINAL IN |
| End Length From First Bend to Second Bend or End | 0.188 INCHES NOMINAL FIRST END IN |
| End Length From First Bend to Second Bend or End | 0.469 INCHES NOMINAL SECOND END IN |
| Coil Quantity | 7 |
| Coil Helix Direction | LEFT-HAND |
| Material | STEEL OVERALL |
| End Length From Second Bend to Third Bend or End | 0.500 INCHES NOMINAL SECOND END IN |
| End Length From Second Bend to Third Bend or End | 0.250 INCHES NOMINAL FIRST END IN |
| End Angular Relationship | ENDS ANGLED ONE TO OTHER |
| End Tangent Angle | 180.0 DEGREES NOMINAL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 2584879 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5360-00-421-5129 is a Spring,helical,torsion, classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
Key specifications for 5360-00-421-5129: Spring Free Outside Diameter: 0.662 INCHES NOMINAL IN; End Style: SINGLE END BOTH ENDS; End Length: 0.500 INCHES NOMINAL SECOND END IN; End Length: 0.750 INCHES NOMINAL FIRST END IN. 18 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.