The Elbow,tube, cataloged under National Stock Number 4730-00-640-6255, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-640-6255 |
| Item Name | Elbow,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Flow Angle | 45.0 DEGREES |
| Connection Style | BEVELED (TUBE) ALL ENDS |
| Tubing Wall Nominal Thickness for Which Designed | 0.083 INCHES ALL ENDS IN |
| Connection Type | BUTT WELD TUBE ALL ENDS |
| Material Document and Classification | ASTM A234-82A ASSN STD SINGLE MATERIAL RESPONSE OVERALL A |
| Nominal Outside Diameter Tube Accommodated | 2.875 INCHES ALL ENDS IN |
| Operating Pressure | 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Leg Length | 1.750 INCHES NOMINAL ALL ENDS IN |
| Specification/standard Data | 81349-MIL-F-20236 GOVERNMENT SPECIFICATION AND 80204-ANSI B16.9 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Sweep Type | LONG |
| Nondefinitive Spec/std Data | 2 TABLE |
| Media for Which Designed | STEAM SINGLE RESPONSE |
| Material | STEEL OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| B16.9 | 5/1 Secondary reference U.S. Government activity |
| MIL-F-20236 | 4/1 Identification reference U.S. Government activity |
NSN 4730-00-640-6255 is a Elbow,tube, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-00-640-6255: Flow Angle: 45.0 DEGREES; Connection Style: BEVELED (TUBE) ALL ENDS; Tubing Wall Nominal Thickness for Which Designed: 0.083 INCHES ALL ENDS IN; Connection Type: BUTT WELD TUBE ALL ENDS. 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.