The Flange,pipe, cataloged under National Stock Number 4730-00-203-9343, 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 Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings). Government technical data includes 17 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-203-9343 |
| Primary Part Number | CS4730-0108C030DH |
| Item Name | Flange,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) |
| Status | ACTIVE |
| Socket Diameter | 2.375 INCHES NOMINAL IN |
| Flange Diameter | 5.562 INCHES NOMINAL IN |
| Face Seating Surface Condition | MACHINED |
| Nominal Pipe Size for Which Designed | 2.000 INCHES IN |
| Socket Depth | 0.656 INCHES NOMINAL IN |
| Maximum Operating Temp and Media for Which Designed | 150.0 FAHRENHEIT STEAM AND 425.0 FAHRENHEIT GAS AND 425.0 FAHRENHEIT OIL AND 425.0 FAHRENHEIT WATER DEGF |
| Tube Outside Diameter for Which Designed | 2.375 INCHES NOMINAL IN |
| Operating Pressure and Type | 150.0 POUNDS PER SQUARE INCH (PSI) STEAM MAXIMUM REQUIRED AND 100.0 POUNDS PER SQUARE INCH (PSI) GAS MAXIMUM REQUIRED AND 100.0 POUNDS PER SQUARE INCH (PSI) OIL MAXIMUM REQUIRED AND 100.0 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 | 0.562 INCHES NOMINAL IN |
| Neck Height | 0.938 INCHES NOMINAL IN |
| Nondefinitive Spec/std Data | EF TYPE AND PLAIN 150 LB CLASS AND 2 IN. ID SIZE LBS |
| Bolt Hole Quantity | 6 |
| Bolt Circle Diameter | 4.438 INCHES NOMINAL IN |
| Material | COPPER ALLOY |
| Thickness | 0.438 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 |
|---|---|
| CS4730-0108C030DH PRIMARY | Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) (USA) |
| Reference | Meaning |
|---|---|
| MILF20042PLAIN100LBCLASSTYPEEF | 5/9 Secondary reference U.S. Government activity |
| MIL-PRF-20042TYEF,CL150,2IN | 5/1 Secondary reference U.S. Government activity |
| MIL-PRF-20042 | 4/1 Identification reference U.S. Government activity |
NSN 4730-00-203-9343 is a Flange,pipe, manufactured by Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings), classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-203-9343 has 1 manufacturer part number on file: CS4730-0108C030DH (Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)).
2 possible matches (shared part number, not a government interchangeability claim): 4730-00-640-6989, 4730-00-640-6991. Verify interchangeability with system specifications before substitution.
Key specifications for CS4730-0108C030DH: Socket Diameter: 2.375 INCHES NOMINAL IN; Flange Diameter: 5.562 INCHES NOMINAL IN; Face Seating Surface Condition: MACHINED; Nominal Pipe Size for Which Designed: 2.000 INCHES IN. 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.