The Spring,helical,extension, cataloged under National Stock Number 5360-01-212-0597, 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 14 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5360-01-212-0597 |
| Primary Part Number | E0850-085-3500S |
| 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 | 0.850 INCHES NOMINAL IN |
| Load Rating | 21.575 POUNDS NOMINAL LBS |
| End Style | SHORT TWISTED HOOK BOTH ENDS |
| Design Type | CLOSED |
| Style Designator | CYLINDRICAL |
| Material Document and Classification | ASTM A313 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5688 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Spring Free Length | 3.670 INCHES NOMINAL IN |
| Spring Deflection Rate | 6.081 POUNDS PER INCH NOMINAL LBS |
| Coil to Hook Inside Length | 0.680 INCHES NOMINAL BOTH ENDS IN |
| Inside Diameter | 0.680 INCHES NOMINAL IN |
| Spring Length Under Load | 6.730 INCHES NOMINAL IN |
| Coil Helix Direction | RIGHT-HAND OR LEFT-HAND |
| Material | STEEL COMP 302 OVERALL |
| Hook Radius | 0.340 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 |
|---|---|
| E0850-085-3500S PRIMARY | Barnes Group Inc (USA) |
| LE085H5SS | Lee Spring Company Llc (USA) |
| PL5D3-02236 ITEM 12 | Lake Shore Systems, Inc. (USA) |
| Reference | Meaning |
|---|---|
| E0850-085-3500S | 5/9 Secondary reference U.S. Government activity |
| 419351-253 | 7/2 Vendor item drawing reference U.S. Government activity |
| E0850-085-3500S | 5/2 Secondary reference U.S. Government activity |
| 12601146-2 | 7/2 Vendor item drawing reference Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate |
| LE085H5SS | 5/9 Secondary reference U.S. Government activity |
| 5D3-02236 ITEM 12 | 5/1 Secondary reference Lake Shore Systems, Inc. |
| E0850-085-3000S | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5360-01-212-0597 is a Spring,helical,extension, manufactured by Barnes Group Inc, classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
NSN 5360-01-212-0597 has 3 manufacturer part numbers on file: E0850-085-3500S (Barnes Group Inc), LE085H5SS (Lee Spring Company Llc), PL5D3-02236 ITEM 12 (Lake Shore Systems, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 5360-01-354-3931. Verify interchangeability with system specifications before substitution.
Key specifications for E0850-085-3500S: Spring Free Outside Diameter: 0.850 INCHES NOMINAL IN; Load Rating: 21.575 POUNDS NOMINAL LBS; 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.