The Spring,helical,compression, cataloged under National Stock Number 5360-00-330-6818, is classified within Federal Supply Class 5360 (Coil, Flat, Leaf, and Wire Springs) of the Hardware and Abrasives group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5360-00-330-6818 |
| Item Name | Spring,helical,compression |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Status | ACTIVE |
| Spring Free Outside Diameter | 0.372 INCHES MINIMUM AND 0.392 INCHES MAXIMUM IN |
| End Style | SPRING END,SQUARED AND GROUND BOTH ENDS |
| Spring Solid Length | 0.217 INCHES MAXIMUM IN |
| Style Designator | CYLINDRICAL |
| Material Document and Classification | QQ-W-470 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Spring Free Length | 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN |
| Spring Deflection Rate | 6.140 POUNDS PER INCH NOMINAL LBS |
| Inside Diameter | 0.310 INCHES MINIMUM AND 0.330 INCHES MAXIMUM IN |
| Spring Solid Outside Diameter | 0.372 INCHES MINIMUM AND 0.392 INCHES MAXIMUM IN |
| Coil Quantity | 7 |
| Coil Helix Direction | RIGHT-HAND OR LEFT-HAND |
| Material | STEEL UNS K08500 OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 74995 | C/1 Advisory reference — outside the item-of-supply concept Honeywell International Inc. Div Aerospace - Torrance |
| 74995 | 3/2 Design control — primary reference U.S. Government activity |
| 74995 | 5/9 Secondary reference Alliedsignal Inc Dba Allied-Signal Aerospace Co |
NSN 5360-00-330-6818 is a Spring,helical,compression, classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 4720-00-410-9506, 2530-00-522-2413. Verify interchangeability with system specifications before substitution.
Key specifications for 5360-00-330-6818: Spring Free Outside Diameter: 0.372 INCHES MINIMUM AND 0.392 INCHES MAXIMUM IN; End Style: SPRING END,SQUARED AND GROUND BOTH ENDS; Spring Solid Length: 0.217 INCHES MAXIMUM IN; Style Designator: CYLINDRICAL. 12 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.