The Spring,helical,extension, cataloged under National Stock Number 5360-00-486-7740, is classified within Federal Supply Class 5360 (Coil, Flat, Leaf, and Wire Springs) of the Hardware and Abrasives group. The manufacturer of record is Lockheed Martin Corporation Div Rms - Mitchel Field. Government technical data includes 14 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5360-00-486-7740 |
| Primary Part Number | 276966 |
| Item Name | Spring,helical,extension |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Manufacturer | Lockheed Martin Corporation Div Rms - Mitchel Field |
| Status | ACTIVE |
| Spring Free Outside Diameter | 0.125 INCHES NOMINAL IN |
| Load Rating | 0.016 KILOGRAMS MINIMUM AND 0.018 KILOGRAMS MAXIMUM KG |
| End Style | SHORT TWISTED HOOK BOTH ENDS |
| Design Type | CLOSED |
| Style Designator | CYLINDRICAL |
| Material Document and Classification | MIL-W-6101 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Spring Free Length | 0.734 INCHES NOMINAL IN |
| Inside Diameter | 0.109 INCHES NOMINAL IN |
| Spring Length Under Load | 1.016 INCHES NOMINAL IN |
| Coil Quantity | 31 |
| Surface Treatment | CADMIUM OVERALL |
| Coil Helix Direction | LEFT-HAND |
| Material | STEEL OVERALL |
| Hook Radius | 0.0545 INCHES NOMINAL BOTH ENDS IN |
| 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 |
|---|---|
| 276966 PRIMARY | Lockheed Martin Corporation Div Rms - Mitchel Field (USA) |
NSN 5360-00-486-7740 is a Spring,helical,extension, manufactured by Lockheed Martin Corporation Div Rms - Mitchel Field, classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
NSN 5360-00-486-7740 has 1 manufacturer part number on file: 276966 (Lockheed Martin Corporation Div Rms - Mitchel Field).
Key specifications for 276966: Spring Free Outside Diameter: 0.125 INCHES NOMINAL IN; Load Rating: 0.016 KILOGRAMS MINIMUM AND 0.018 KILOGRAMS MAXIMUM KG; End Style: SHORT TWISTED HOOK BOTH ENDS; Design Type: CLOSED. 14 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.