The Elbow,hose, cataloged under National Stock Number 4730-01-643-5890, 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 Burke Industries Purosil Div. Government technical data includes 11 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. 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 | 4730-01-643-5890 |
| Primary Part Number | 90-125-MK |
| Item Name | Elbow,hose |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Burke Industries Purosil Div |
| Status | ACTIVE |
| Flange Shape | ROUND ALL ENDS |
| Flange Face Design | PLAIN ALL ENDS |
| Nominal Overall Length | 12.0 INCHES IN |
| Connection Type | FLANGE ALL ENDS |
| Style Designator | PLAIN |
| Leg Length | 6.0 INCHES NOMINAL ALL ENDS IN |
| Reduced Passage Nominal Inside Diameter | 1.25 INCHES ALL ENDS IN |
| Seat Angle | 1.5 RADIANS INLET |
| Material | PLASTIC POLYESTER INSIDE |
| Material | SILICON OUTSIDE |
| Nominal Thickness | 0.19 INCHES ALL ENDS IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 4730-01-643-5890 is a Elbow,hose, manufactured by Burke Industries Purosil Div, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-643-5890 has 2 manufacturer part numbers on file: 90-125 (Marine Systems Australia Marine and Rv Systems Australia P/l), 90-125-MK (Burke Industries Purosil Div).
1 possible match (shared part number, not a government interchangeability claim): 6320-01-685-0724. Verify interchangeability with system specifications before substitution.
Key specifications for 90-125-MK: Flange Shape: ROUND ALL ENDS; Flange Face Design: PLAIN ALL ENDS; Nominal Overall Length: 12.0 INCHES IN; Connection Type: FLANGE ALL ENDS. 11 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.