The Flange,pipe, cataloged under National Stock Number 4730-00-256-8517, 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 17 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4730-00-256-8517 |
| Item Name | Flange,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Flange Diameter | 6.125 INCHES NOMINAL IN |
| Face Seating Surface Condition | MACHINED |
| Nominal Pipe Size for Which Designed | 1.500 INCHES IN |
| Maximum Operating Temp and Media for Which Designed | 950.0 FAHRENHEIT GAS AND 950.0 FAHRENHEIT OIL AND 950.0 FAHRENHEIT WATER DEGF |
| Operating Pressure and Type | 600.0 POUNDS PER SQUARE INCH (PSI) GAS MAXIMUM REQUIRED AND 600.0 POUNDS PER SQUARE INCH (PSI) OIL MAXIMUM REQUIRED AND 600.0 POUNDS PER SQUARE INCH (PSI) WATER MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS |
| Flange Section Style | RAISED FACE, WELDING NECK |
| Style Designator | ROUND, ONE BOLT HOLE CIRCLE |
| Bolt Hole Diameter | 0.875 INCHES NOMINAL IN |
| Neck Height | 1.875 INCHES NOMINAL IN |
| Material Document and Classification | ASTM A182,GRADE F1 ASSN STD SINGLE MATERIAL RESPONSE |
| Specification/standard Data | 80204-ASA B16.5,TABLES 16 AND 17 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Bolt Hole Quantity | 4 |
| Bolt Circle Diameter | 4.500 INCHES NOMINAL IN |
| Raised Face Diameter | 2.875 INCHES NOMINAL IN |
| Raised Face Height | 0.250 INCHES NOMINAL IN |
| Material | STEEL |
| Thickness | 0.875 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 | X |
| Reference | Meaning |
|---|---|
| M18180/1-056A05A | 2/2 Government specification standardization U.S. Government activity |
| MIL-F-1810C | 4/1 Identification reference U.S. Government activity |
NSN 4730-00-256-8517 is a Flange,pipe, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-00-256-8517: Flange Diameter: 6.125 INCHES NOMINAL IN; Face Seating Surface Condition: MACHINED; Nominal Pipe Size for Which Designed: 1.500 INCHES IN; Maximum Operating Temp and Media for Which Designed: 950.0 FAHRENHEIT GAS AND 950.0 FAHRENHEIT OIL AND 950.0 FAHRENHEIT WATER DEGF. 17 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.