The Spring,reinforcing,hose, cataloged under National Stock Number 4720-01-340-1623, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Hydrasearch Company, Llc. Government technical data includes 4 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-01-340-1623 |
| Primary Part Number | FF90505-1619-501 |
| Item Name | Spring,reinforcing,hose |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Hydrasearch Company, Llc |
| Status | ACTIVE |
| Spring Free Outside Diameter | 1.625 INCHES NOMINAL IN |
| End Style | SPRING END,PLAIN BOTH ENDS |
| Style Designator | CYLINDRICAL |
| Material | COPPER ALLOY 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 |
|---|---|
| FF90505-1619-501 PRIMARY | Hydrasearch Company, Llc (USA) |
| ISC-24C PRIMARY | Hydrasearch Company, Llc (USA) |
| Reference | Meaning |
|---|---|
| FF90505-1619-501 | 3/9 Design control — primary reference Danfoss Power Solutions II, Llc |
| FC137-24 | 5/9 Secondary reference Danfoss Power Solutions II, Llc |
NSN 4720-01-340-1623 is a Spring,reinforcing,hose, manufactured by Hydrasearch Company, Llc, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-340-1623 has 2 manufacturer part numbers on file: FF90505-1619-501 (Hydrasearch Company, Llc), ISC-24C (Hydrasearch Company, Llc).
Key specifications for FF90505-1619-501: Spring Free Outside Diameter: 1.625 INCHES NOMINAL IN; End Style: SPRING END,PLAIN BOTH ENDS; Style Designator: CYLINDRICAL; Material: COPPER ALLOY OVERALL. 4 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.