The Spring,helical,compression, cataloged under National Stock Number 5360-00-291-7007, is classified within Federal Supply Class 5360 (Coil, Flat, Leaf, and Wire Springs) of the Hardware and Abrasives group. The manufacturer of record is Hunt Valve Company, Inc.. Government technical data includes 9 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through both NSN and commercial part number lookups. 28 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 9 items share a part number with this NSN in the catalog (possible match — not a government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 | 5360-00-291-7007 |
| Primary Part Number | D26728 |
| Item Name | Spring,helical,compression |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Manufacturer | Hunt Valve Company, Inc. |
| Status | ACTIVE |
| Spring Free Outside Diameter | 0.6875 INCHES NOMINAL IN |
| End Style | SPRING END,SQUARED AND GROUND BOTH ENDS |
| Style Designator | CYLINDRICAL |
| Spring Free Length | 3.000 INCHES NOMINAL IN |
| Inside Diameter | 1.250 INCHES NOMINAL IN |
| Coil Quantity | 7-3/4 |
| Surface Treatment | CADMIUM OVERALL |
| Coil Helix Direction | LEFT-HAND |
| Material | STEEL OVERALL |
| 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 |
|---|---|
| D26728 PRIMARY | Hunt Valve Company, Inc. (USA) |
| D29210 | Hunt Valve Company, Inc. (USA) |
| Reference | Meaning |
|---|---|
| D29210 | 5/9 Secondary reference Hunt Valve Company Inc Dba Union Flonetics |
| D15-508JPC249A | 5/9 Secondary reference U.S. Government activity |
| D15-649JPC765I | 5/9 Secondary reference U.S. Government activity |
| D15-508JPC249A | 5/2 Secondary reference U.S. Government activity |
| D15-695JPC756A | 5/2 Secondary reference U.S. Government activity |
| D29210 | 5/9 Secondary reference Hammel Dahl Inc |
| D15-675MPC756A | 5/9 Secondary reference Westinghouse Electric Corp |
| D15-508HPC249A | 5/9 Secondary reference Westinghouse Electric Corp |
| D15-649JPC765I | 5/2 Secondary reference U.S. Government activity |
| D15-675MPC756A | 5/2 Secondary reference U.S. Government activity |
| D26728 | 3/9 Design control — primary reference Hunt Valve Company Inc Dba Union Flonetics |
| D15-675MPC756A | 5/9 Secondary reference U.S. Government activity |
| D15-649HPC765I | 5/9 Secondary reference Westinghouse Electric Corp |
| D15-508HPC249A | 5/9 Secondary reference U.S. Government activity |
| D15-649HPC765I | 5/2 Secondary reference U.S. Government activity |
| D15-695JPC756A | 5/9 Secondary reference U.S. Government activity |
| D15-649HPC765I | 5/9 Secondary reference U.S. Government activity |
| D15-508JPC249A | 5/9 Secondary reference Westinghouse Electric Corp |
| 4304 | 5/9 Secondary reference U.S. Government activity |
| D15-653JPC756A | 5/2 Secondary reference U.S. Government activity |
NSN 5360-00-291-7007 is a Spring,helical,compression, manufactured by Hunt Valve Company, Inc., classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
NSN 5360-00-291-7007 has 2 manufacturer part numbers on file: D26728 (Hunt Valve Company, Inc.), D29210 (Hunt Valve Company, Inc.).
9 possible matches (shared part number, not a government interchangeability claim): 6680-00-412-4683, 3110-00-421-0509, 5130-00-447-8265. Verify interchangeability with system specifications before substitution.
Key specifications for D26728: Spring Free Outside Diameter: 0.6875 INCHES NOMINAL IN; End Style: SPRING END,SQUARED AND GROUND BOTH ENDS; Style Designator: CYLINDRICAL; Spring Free Length: 3.000 INCHES NOMINAL IN. 9 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.