The Elbow,tube to Boss, cataloged under National Stock Number 4730-01-648-0539, 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 The Entwistle Company Llc. Government technical data includes 13 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-648-0539 |
| Primary Part Number | 0418C03-0386-01 |
| Item Name | Elbow,tube to Boss |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | The Entwistle Company Llc |
| Status | ACTIVE |
| Flow Angle | 90.0 DEGREES |
| Connection Style | EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END |
| Connection Style | FLARED (TUBE) FIRST END |
| Thread Pitch in Millimeters | 1.5 SECOND END |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Connection Type | THREADED INTERNAL BOSS SECOND END |
| Style Designator | ELBOW |
| Nominal Thread Size | 12.0 MILLIMETERS SECOND END MM |
| Nominal Thread Size | 0.5 INCHES FIRST END IN |
| Seat Angle | 37.0 DEGREES FIRST END |
| Thread Quantity Per Inch | 20 FIRST END |
| Material | STEEL BODY |
| Thread Series Designator | M 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 |
|---|---|
| 7801-5-12 | Tompkins Industries Inc (USA) |
| 0418C03-0386-01 PRIMARY | The Entwistle Company Llc (USA) |
NSN 4730-01-648-0539 is a Elbow,tube to Boss, manufactured by The Entwistle Company Llc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-648-0539 has 2 manufacturer part numbers on file: 7801-5-12 (Tompkins Industries Inc), 0418C03-0386-01 (The Entwistle Company Llc).
Key specifications for 0418C03-0386-01: Flow Angle: 90.0 DEGREES; Connection Style: EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END; Connection Style: FLARED (TUBE) FIRST END; Thread Pitch in Millimeters: 1.5 SECOND END. 13 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.