The Connector,multiple,fluid Pressur, cataloged under National Stock Number 4730-00-555-0890, 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 Rtx Corporation Div Pratt & Whitney. Government technical data includes 16 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-00-555-0890 |
| Primary Part Number | 352891 |
| Item Name | Connector,multiple,fluid Pressur |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Rtx Corporation Div Pratt & Whitney |
| Status | ACTIVE |
| Bolt Hole Fluid Passage | PROVIDED |
| Seat Angle in Deg | 37.0 LOCATION NOT OTHERWISE SPECIFIED |
| Thread Provision | THREADED LOCATION NOT OTHERWISE SPECIFIED |
| Fluid Conveyance Type and Size for Which Designed | 1/2 IN. TUBE IN |
| Connection Style | FLARED LOCATION NOT OTHERWISE SPECIFIED |
| Bolt Hole Flats Serrations | NOT PROVIDED |
| Style Designator | 1 FLUID CONNECTION |
| Fluid Connection Quantity | 1 LOCATION NOT OTHERWISE SPECIFIED |
| Bolt Hole Diameter | 0.751 INCHES NOMINAL IN |
| Thread Pitch Diameters | +0.7026 TO 0.7064 INCHES LOCATION NOT OTHERWISE SPECIFIED IN |
| Thread Direction | RIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED |
| Thread Size | 3/4 IN.-16 LOCATION NOT OTHERWISE SPECIFIED IN |
| Screw Thread Series Designator | UNF LOCATION NOT OTHERWISE SPECIFIED |
| Material | STEEL CORROSION RESISTING |
| Furnished Items | SEAT LOCATION NOT OTHERWISE SPECIFIED |
| Thickness | 1.000 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| 352891 | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| 352891 PRIMARY | Rtx Corporation Div Pratt & Whitney (USA) |
| Reference | Meaning |
|---|---|
| 352891 | 5/9 Secondary reference Geodesics Inc |
| 352891 | 5/9 Secondary reference Turbo Power & Marine System Inc Sub of United Technologies Corp |
| 352891 | 5/9 Secondary reference Elwood William J Inc |
| 35289 | 5/9 Secondary reference Rtx Corporation Div Pratt & Whitney |
NSN 4730-00-555-0890 is a Connector,multiple,fluid Pressur, manufactured by Rtx Corporation Div Pratt & Whitney, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-555-0890 has 2 manufacturer part numbers on file: 352891 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 352891 (Rtx Corporation Div Pratt & Whitney).
1 possible match (shared part number, not a government interchangeability claim): 1680-01-571-5511. Verify interchangeability with system specifications before substitution.
Key specifications for 352891: Bolt Hole Fluid Passage: PROVIDED; Seat Angle in Deg: 37.0 LOCATION NOT OTHERWISE SPECIFIED; Thread Provision: THREADED LOCATION NOT OTHERWISE SPECIFIED; Fluid Conveyance Type and Size for Which Designed: 1/2 IN. TUBE IN. 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.