The Spring,helical,torsion, cataloged under National Stock Number 5360-00-855-7749, is classified within Federal Supply Class 5360 (Coil, Flat, Leaf, and Wire Springs) of the Hardware and Abrasives group. The manufacturer of record is Ametek, Inc. Div Aerospace & Defense. Government technical data includes 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5360-00-855-7749 |
| Primary Part Number | 579R349H05 |
| Item Name | Spring,helical,torsion |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Manufacturer | Ametek, Inc. Div Aerospace & Defense |
| Status | ACTIVE |
| Spring Free Outside Diameter | 0.860 INCHES NOMINAL IN |
| End Style | STRAIGHT BEND END (RIGHT) SECOND END |
| End Style | ONE HOOK END FIRST END |
| Style Designator | SINGLE TORSION LEFT HAND |
| Spring Free Length | 0.850 INCHES NOMINAL IN |
| Inside Diameter | 0.680 INCHES NOMINAL IN |
| End Length From First Bend to Second Bend or End | 0.380 INCHES NOMINAL OVERALL IN |
| Coil Quantity | 7-1/8 |
| Coil Helix Direction | RIGHT-HAND |
| 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 |
|---|---|
| 579R349H05 | Ametek, Inc. Div Aerospace & Defense (USA) |
| Reference | Meaning |
|---|---|
| 579R349H05 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5360-00-855-7749 is a Spring,helical,torsion, manufactured by Ametek, Inc. Div Aerospace & Defense, classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
NSN 5360-00-855-7749 has 1 manufacturer part number on file: 579R349H05 (Ametek, Inc. Div Aerospace & Defense).
Key specifications for 579R349H05: Spring Free Outside Diameter: 0.860 INCHES NOMINAL IN; End Style: STRAIGHT BEND END (RIGHT) SECOND END; End Style: ONE HOOK END FIRST END; Style Designator: SINGLE TORSION LEFT HAND. 10 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.