The Spring,helical,extension, cataloged under National Stock Number 5360-00-349-8044, 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 Services, Llc. Government technical data includes 16 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5360-00-349-8044 |
| Primary Part Number | 3145994 |
| Item Name | Spring,helical,extension |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Manufacturer | Lockheed Martin Services, Llc |
| Status | ACTIVE |
| Spring Free Outside Diameter | 0.307 INCHES MINIMUM AND 0.317 INCHES MAXIMUM IN |
| Load Rating | 7.10 POUNDS MINIMUM AND 8.90 POUNDS MAXIMUM LBS |
| End Style | SHORT TWISTED HOOK BOTH ENDS |
| Design Type | CLOSED |
| Style Designator | CYLINDRICAL |
| Material Document and Classification | QQ-W-423,COND B FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Spring Free Length | 1.260 INCHES MINIMUM AND 1.320 INCHES MAXIMUM IN |
| Spring Deflection Rate | 20.000 POUNDS PER INCH NOMINAL LBS |
| Coil to Hook Inside Length | 0.217 INCHES MINIMUM AND 0.227 INCHES MAXIMUM BOTH ENDS IN |
| Inside Diameter | 0.217 INCHES MINIMUM AND 0.227 INCHES MAXIMUM IN |
| Spring Length Under Load | 1.500 INCHES NOMINAL IN |
| Coil Quantity | 15-1/2 |
| Surface Treatment | PASSIVATE OVERALL |
| Coil Helix Direction | RIGHT-HAND OR LEFT-HAND |
| Material | STEEL COMP 302 OVERALL |
| Hook Radius | 0.1085 INCHES MINIMUM AND 0.1135 INCHES MAXIMUM 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 |
|---|---|
| 3145994 PRIMARY | Lockheed Martin Services, Llc (USA) |
| Reference | Meaning |
|---|---|
| 3145994 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 3145994 | C/1 Advisory reference — outside the item-of-supply concept International Business Machines Corporation Dba IBM |
NSN 5360-00-349-8044 is a Spring,helical,extension, manufactured by Lockheed Martin Services, Llc, classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
NSN 5360-00-349-8044 has 1 manufacturer part number on file: 3145994 (Lockheed Martin Services, Llc).
1 possible match (shared part number, not a government interchangeability claim): 6150-01-579-6829. Verify interchangeability with system specifications before substitution.
Key specifications for 3145994: Spring Free Outside Diameter: 0.307 INCHES MINIMUM AND 0.317 INCHES MAXIMUM IN; Load Rating: 7.10 POUNDS MINIMUM AND 8.90 POUNDS MAXIMUM LBS; End Style: SHORT TWISTED HOOK BOTH ENDS; Design Type: CLOSED. 16 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.