The Elbow,tube to Hose, cataloged under National Stock Number 4730-01-516-0275, 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 Naval Sea Systems Command. Government technical data includes 19 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-516-0275 |
| Primary Part Number | 801-6640819ASSY63 |
| Item Name | Elbow,tube to Hose |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 TAILPIECE AND 1 UNION NUT AND 1 GASKET AND 1 PREFORMED PACKING |
| Flow Angle | 90.0 DEGREES |
| Connection Style | PLAIN (TUBE) ALL ENDS |
| Connection Style | GASKET SEAL, COMPRESSION (TUBE) FIRST END |
| Connection Style | INVERTED FLARE (TUBE) SECOND END |
| Nominal Inside Diameter Hose Accommodated | 1.250 INCHES SECOND END IN |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Connection Type | THREADED EXTERNAL HOSE SECOND END |
| Material Document and Classification | MIL-C-24679 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Outside Diameter Tube Accommodated | 0.500 INCHES FIRST END IN |
| Operating Pressure | 11.5 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Leg Length | 2.380 INCHES NOMINAL SECOND END IN |
| Leg Length | 3.200 INCHES NOMINAL FIRST END IN |
| Nominal Thread Size | 11.500 INCHES SECOND END IN |
| Seat Angle | 37.0 DEGREES SECOND END |
| Maximum Operating Temp | 165.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Material | NICKEL ALLOY AND COPPER ALLOY OVERALL |
| Thread Series Designator | NPS FIRST END |
| Thread Series Designator | NH SECOND END |
| 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 |
|---|---|
| 801-6640819ASSY63 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 801-6640819 | D/9 Drawing number reference only Naval Sea Systems Command |
| 2633-002-01 ASSY-63 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4730-01-516-0275 is a Elbow,tube to Hose, manufactured by Naval Sea Systems Command, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-516-0275 has 1 manufacturer part number on file: 801-6640819ASSY63 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-517-2897. Verify interchangeability with system specifications before substitution.
Key specifications for 801-6640819ASSY63: Furnished Items and Quantity: 1 TAILPIECE AND 1 UNION NUT AND 1 GASKET AND 1 PREFORMED PACKING; Flow Angle: 90.0 DEGREES; Connection Style: PLAIN (TUBE) ALL ENDS; Connection Style: GASKET SEAL, COMPRESSION (TUBE) FIRST END. 19 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.