The Spring,helical,extension, cataloged under National Stock Number 5360-00-761-7940, is classified within Federal Supply Class 5360 (Coil, Flat, Leaf, and Wire Springs) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company. Government technical data includes 15 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 | 5360-00-761-7940 |
| Primary Part Number | A02R4061-1 |
| Item Name | Spring,helical,extension |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Manufacturer | The Boeing Company |
| Status | ACTIVE |
| Spring Free Outside Diameter | 0.981 INCHES MAXIMUM IN |
| Load Rating | 2.54 POUNDS NOMINAL LBS |
| End Style | FULL LOOP BOTH ENDS |
| Design Type | CLOSED |
| Style Designator | CYLINDRICAL |
| Material Document and Classification | QQ-C-530,FORM WIRE,COND XHT FED SPEC ALL MATERIAL RESPONSES OVERALL |
| Spring Free Length | 2.988 INCHES NOMINAL IN |
| Spring Deflection Rate | 0.700 POUNDS PER INCH NOMINAL LBS |
| Coil to Hook Inside Length | 0.500 INCHES NOMINAL BOTH ENDS IN |
| Inside Diameter | 0.819 INCHES MINIMUM IN |
| Spring Length Under Load | 4.998 INCHES NOMINAL IN |
| Coil Quantity | 30 |
| Coil Helix Direction | RIGHT-HAND OR LEFT-HAND |
| Material | COPPER ALLOY 172 OR COPPER ALLOY 173 OVERALL |
| Hook Radius | 0.250 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 |
|---|---|
| A02R4061-1 PRIMARY | The Boeing Company (USA) |
NSN 5360-00-761-7940 is a Spring,helical,extension, manufactured by The Boeing Company, classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
NSN 5360-00-761-7940 has 1 manufacturer part number on file: A02R4061-1 (The Boeing Company).
Key specifications for A02R4061-1: Spring Free Outside Diameter: 0.981 INCHES MAXIMUM IN; Load Rating: 2.54 POUNDS NOMINAL LBS; End Style: FULL LOOP BOTH ENDS; Design Type: CLOSED. 15 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.