The Spring,helical,extension, cataloged under National Stock Number 5360-01-121-8756, is classified within Federal Supply Class 5360 (Coil, Flat, Leaf, and Wire Springs) of the Hardware and Abrasives group. The manufacturer of record is Barnes Group Inc. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5360-01-121-8756 |
| Primary Part Number | E0360-041-1120S |
| Item Name | Spring,helical,extension |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Manufacturer | Barnes Group Inc |
| Status | ACTIVE |
| Spring Free Outside Diameter | 0.360 INCHES NOMINAL IN |
| Load Rating | 6.580 POUNDS NOMINAL LBS |
| End Style | SHORT TWISTED HOOK BOTH ENDS |
| Design Type | CLOSED |
| Style Designator | CYLINDRICAL |
| Material Document and Classification | QQ-W-423 FED SPEC SINGLE MATERIAL RESPONSE OR AMS 5688 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Spring Free Length | 1.202 INCHES NOMINAL IN |
| Spring Deflection Rate | 8.247 POUNDS PER INCH NOMINAL LBS |
| Inside Diameter | 0.278 INCHES NOMINAL IN |
| Spring Length Under Load | 1.850 INCHES NOMINAL IN |
| Coil Helix Direction | RIGHT-HAND OR LEFT-HAND |
| Material | STEEL COMP 302 OVERALL |
| Hook Radius | 0.139 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 |
|---|---|
| E0360-041-1120S PRIMARY | Barnes Group Inc (USA) |
| 1111AS-300-5 | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| 419351-122 | 7/2 Vendor item drawing reference U.S. Government activity |
| LE-041D-2SS | C/1 Advisory reference — outside the item-of-supply concept Lee Spring Company Llc |
| LE-041D-2SS | 5/9 Secondary reference U.S. Government activity |
| E0360-041-1120S | 3/2 Design control — primary reference U.S. Government activity |
NSN 5360-01-121-8756 is a Spring,helical,extension, manufactured by Barnes Group Inc, classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
NSN 5360-01-121-8756 has 2 manufacturer part numbers on file: E0360-041-1120S (Barnes Group Inc), 1111AS-300-5 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).
Key specifications for E0360-041-1120S: Spring Free Outside Diameter: 0.360 INCHES NOMINAL IN; Load Rating: 6.580 POUNDS NOMINAL LBS; End Style: SHORT TWISTED HOOK BOTH ENDS; Design Type: CLOSED. 13 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.