The Spring,helical,torsion, cataloged under National Stock Number 5360-00-063-3903, is classified within Federal Supply Class 5360 (Coil, Flat, Leaf, and Wire Springs) of the Hardware and Abrasives group. Government technical data includes 16 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5360-00-063-3903 |
| Item Name | Spring,helical,torsion |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Status | ACTIVE |
| Spring Free Outside Diameter | 0.583 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | FD30000 CODE C,CAGE 98897 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| End Style | OFFSET HINGE END, LEFT SIDE OVERALL |
| Center Section Width | 1.326 INCHES NOMINAL IN |
| Style Designator | SINGLE TORSION RIGHT HAND |
| Material Document and Classification | QQ-W-470 FED SPEC ALL MATERIAL RESPONSES OVERALL |
| Coil Axis to Center Section Distance | 0.497 INCHES NOMINAL IN |
| Inside Diameter | 0.457 INCHES NOMINAL IN |
| Coil Quantity | 8-1/2 |
| Surface Treatment | CADMIUM OVERALL |
| Coil Helix Direction | RIGHT-HAND OR LEFT-HAND |
| Material | STEEL UNS K08500 OVERALL |
| End Angular Relationship | END W/LH HELIX OF COIL ANGLED TO CENTER SECTION AND END W/RH HELIX OF COIL ANGLED TO CENTER SECTION |
| Hook Radius | 0.100 INCHES MINIMUM FIRST END IN |
| Hook Radius | 0.115 INCHES MAXIMUM BOTH ENDS IN |
| Hook Opening Width | 0.120 INCHES NOMINAL OVERALL IN |
| 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 |
|---|---|
| 4N21290-101A | 3/2 Design control — primary reference U.S. Government activity |
NSN 5360-00-063-3903 is a Spring,helical,torsion, classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
Key specifications for 5360-00-063-3903: Spring Free Outside Diameter: 0.583 INCHES NOMINAL IN; Surface Treatment Document and Classification: FD30000 CODE C,CAGE 98897 MFR REF SINGLE TREATMENT RESPONSE OVERALL; End Style: OFFSET HINGE END, LEFT SIDE OVERALL; Center Section Width: 1.326 INCHES NOMINAL 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.