The Coupling Assembly,quick Disconne, cataloged under National Stock Number 4730-01-491-2035, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Danfoss Power Solutions II, Llc. Government technical data includes 10 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-491-2035 |
| Primary Part Number | 5606-4-4S |
| Item Name | Coupling Assembly,quick Disconne |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Danfoss Power Solutions II, Llc |
| Status | ACTIVE |
| Connection Style | PLAIN FIRST FLUID END CONNECTION |
| Connection Type | THREADED INTERNAL PIPE FIRST FLUID END CONNECTION |
| Style Designator | COUPLING ASSEMBLY, THREADED INTERNAL |
| Operating Pressure | 5000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Nominal Thread Size | 0.438 INCHES FIRST FLUID END CONNECTION IN |
| Surface Treatment | ZINC OVERALL |
| Thread Class | 2B FIRST FLUID END CONNECTION |
| Material | STEEL OVERALL |
| Quick Disconnect Method | PUSH-PULL ALL ENDS |
| Thread Series Designator | UNF FIRST FLUID END CONNECTION |
| 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 |
|---|---|
| 5606-4-4S PRIMARY | Danfoss Power Solutions II, Llc (USA) |
| Reference | Meaning |
|---|---|
| 17-1-9429-1 | 7/2 Vendor item drawing reference U.S. Government activity |
| 17-1-9429 | D/9 Drawing number reference only U.S. Government activity |
NSN 4730-01-491-2035 is a Coupling Assembly,quick Disconne, manufactured by Danfoss Power Solutions II, Llc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-491-2035 has 1 manufacturer part number on file: 5606-4-4S (Danfoss Power Solutions II, Llc).
1 possible match (shared part number, not a government interchangeability claim): 5999-01-554-6252. Verify interchangeability with system specifications before substitution.
Key specifications for 5606-4-4S: Connection Style: PLAIN FIRST FLUID END CONNECTION; Connection Type: THREADED INTERNAL PIPE FIRST FLUID END CONNECTION; Style Designator: COUPLING ASSEMBLY, THREADED INTERNAL; Overall Length: 2.530 INCHES MINIMUM AND 3.090 INCHES MAXIMUM IN. 10 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.