The Spring,helical,torsion, cataloged under National Stock Number 5360-00-780-2981, is classified within Federal Supply Class 5360 (Coil, Flat, Leaf, and Wire Springs) of the Hardware and Abrasives group. The manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5360-00-780-2981 |
| Primary Part Number | 2057107 |
| Item Name | Spring,helical,torsion |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Spring Free Outside Diameter | 0.330 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| End Style | PARALLEL END BOTH ENDS |
| Center Section Width | 0.385 INCHES NOMINAL IN |
| Style Designator | SINGLE TORSION RIGHT HAND |
| Material Document and Classification | AMS 5673 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Spring Free Length | 0.465 INCHES NOMINAL IN |
| Coil Axis to Center Section Distance | 0.560 INCHES NOMINAL IN |
| Inside Diameter | 0.250 INCHES NOMINAL IN |
| End Length From First Bend to Second Bend or End | 0.060 INCHES NOMINAL BOTH ENDS IN |
| End Length From Coil Axis to First Bend | 0.350 INCHES NOMINAL BOTH ENDS IN |
| Surface Treatment | PASSIVATE OVERALL |
| Coil Helix Direction | LEFT-HAND OR RIGHT-HAND |
| Center Style | SQUARE TYPE |
| Material | STEEL COMP 631 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 |
| End Tangent Angle | 120.0 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 |
| Part Number | Manufacturer |
|---|---|
| 2057107 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| L309000056 | Lockheed Martin Librascope Corporation (USA) |
| BUWEPSDWG2057107 PRIMARY | Lockheed Martin Librascope Corporation (USA) |
NSN 5360-00-780-2981 is a Spring,helical,torsion, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
NSN 5360-00-780-2981 has 3 manufacturer part numbers on file: 2057107 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), L309000056 (Lockheed Martin Librascope Corporation), BUWEPSDWG2057107 (Lockheed Martin Librascope Corporation).
Key specifications for 2057107: Spring Free Outside Diameter: 0.330 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; End Style: PARALLEL END BOTH ENDS; Center Section Width: 0.385 INCHES NOMINAL IN. 17 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.