The Flange,pipe, cataloged under National Stock Number 4730-00-640-6991, 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 Flagg Stanley G & Co Inc Dba Flagg Brass. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-640-6991 |
| Primary Part Number | CS4730-0108C036DH |
| Item Name | Flange,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Flagg Stanley G & Co Inc Dba Flagg Brass |
| Status | ACTIVE |
| Socket Diameter | 5.562 INCHES NOMINAL IN |
| Flange Diameter | 9.062 INCHES NOMINAL IN |
| Face Seating Surface Condition | MACHINED |
| Socket Depth | 0.688 INCHES NOMINAL IN |
| Maximum Operating Temp and Media for Which Designed | 425.0 FAHRENHEIT GAS AND 425.0 FAHRENHEIT OIL AND 425.0 FAHRENHEIT STEAM AND 425.0 FAHRENHEIT WATER DEGF |
| Tube Outside Diameter for Which Designed | 5.562 INCHES NOMINAL IN |
| Operating Pressure and Type | 150.0 POUNDS PER SQUARE INCH (PSI) GAS MAXIMUM REQUIRED AND 150.0 POUNDS PER SQUARE INCH (PSI) OIL MAXIMUM REQUIRED AND 150.0 POUNDS PER SQUARE INCH (PSI) STEAM MAXIMUM REQUIRED AND 150.0 POUNDS PER SQUARE INCH (PSI) WATER MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS |
| Flange Section Style | PLAIN FACE, SOCKET NECK |
| Style Designator | ROUND, ONE BOLT HOLE CIRCLE |
| Bolt Hole Diameter | 0.688 INCHES NOMINAL IN |
| Neck Height | 1.000 INCHES NOMINAL IN |
| Nondefinitive Spec/std Data | EF TYPE |
| Bolt Hole Quantity | 10 |
| Bolt Circle Diameter | 7.812 INCHES NOMINAL IN |
| Material | COPPER ALLOY |
| Thickness | 0.562 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 |
| Part Number | Manufacturer |
|---|---|
| CS4730-0108C036DH | Flagg Stanley G & Co Inc Dba Flagg Brass (USA) |
| CS4730-0108C036DH | Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc (USA) |
| CS4730-0108C036DH | Derbyshire Machine & Tool Co (USA) |
| CS4730-0108C036DH | The Walworth Company (USA) |
| Reference | Meaning |
|---|---|
| CS4730-0108C036DH | 5/9 Secondary reference Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) |
| MILF20042PLAIN100LBCLASSTYPEEF | 4/1 Identification reference U.S. Government activity |
NSN 4730-00-640-6991 is a Flange,pipe, manufactured by Flagg Stanley G & Co Inc Dba Flagg Brass, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-640-6991 has 4 manufacturer part numbers on file: CS4730-0108C036DH (Flagg Stanley G & Co Inc Dba Flagg Brass), CS4730-0108C036DH (Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc), CS4730-0108C036DH (Derbyshire Machine & Tool Co), CS4730-0108C036DH (The Walworth Company).
Key specifications for CS4730-0108C036DH: Socket Diameter: 5.562 INCHES NOMINAL IN; Flange Diameter: 9.062 INCHES NOMINAL IN; Face Seating Surface Condition: MACHINED; Socket Depth: 0.688 INCHES NOMINAL IN. 16 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.