The Spring,helical,extension, cataloged under National Stock Number 5360-01-276-1791, 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 11 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. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5360-01-276-1791 |
| Primary Part Number | E0240-026-0880S |
| 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 | 0.240 INCHES NOMINAL IN |
| End Style | SHORT TWISTED HOOK BOTH ENDS |
| Design Type | CLOSED |
| Style Designator | CYLINDRICAL |
| Material Document and Classification | ASTM A313 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5688 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| Spring Free Length | 0.932 INCHES NOMINAL IN |
| Spring Deflection Rate | 4.000 POUNDS PER INCH NOMINAL LBS |
| Inside Diameter | 0.188 INCHES NOMINAL IN |
| Coil Helix Direction | RIGHT-HAND OR LEFT-HAND |
| Material | STEEL OR STEEL COMP 302 OVERALL |
| Hook Radius | 0.094 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 |
|---|---|
| 311-5750047-005 | Naval Sea Systems Command (USA) |
| E0240-026-0880S PRIMARY | Barnes Group Inc (USA) |
NSN 5360-01-276-1791 is a Spring,helical,extension, manufactured by Barnes Group Inc, classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
NSN 5360-01-276-1791 has 2 manufacturer part numbers on file: 311-5750047-005 (Naval Sea Systems Command), E0240-026-0880S (Barnes Group Inc).
1 possible match (shared part number, not a government interchangeability claim): 5360-01-277-5118. Verify interchangeability with system specifications before substitution.
Key specifications for E0240-026-0880S: Spring Free Outside Diameter: 0.240 INCHES NOMINAL IN; End Style: SHORT TWISTED HOOK BOTH ENDS; Design Type: CLOSED; Style Designator: CYLINDRICAL. 11 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.