The Flange,pipe, cataloged under National Stock Number 4730-01-023-7775, 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 Ati Ladish Llc Dba Ati Wah Chang Div Ati Forged Products - Cudahy. Government technical data includes 18 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-023-7775 |
| Primary Part Number | 15-5 |
| Item Name | Flange,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Ati Ladish Llc Dba Ati Wah Chang Div Ati Forged Products - Cudahy |
| Status | ACTIVE |
| Flange Diameter | 10.000 INCHES NOMINAL IN |
| Face Seating Surface Condition | SERRATED |
| Nominal Pipe Size for Which Designed | 5.560 INCHES IN |
| Maximum Operating Temp and Media for Which Designed | 500.0 FAHRENHEIT GAS AND 500.0 FAHRENHEIT OIL AND 500.0 FAHRENHEIT WATER DEGF |
| 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) 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 | 0.880 INCHES NOMINAL IN |
| Neck Height | 2.562 INCHES NOMINAL IN |
| Material Document and Classification | ASTM A181,GRADE 1 ASSN STD SINGLE MATERIAL RESPONSE |
| Specification/standard Data | 80204-B16.5 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Nondefinitive Spec/std Data | 8 TABLE |
| Bolt Hole Quantity | 8 |
| Bolt Circle Diameter | 8.500 INCHES NOMINAL IN |
| Raised Face Diameter | 7.312 INCHES NOMINAL IN |
| Raised Face Height | 0.062 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 |
| Part Number | Manufacturer |
|---|---|
| 15-5 PRIMARY | Ati Ladish Llc Dba Ati Wah Chang Div Ati Forged Products - Cudahy (USA) |
| 568-5 PRIMARY | Crane Co Div Valve Div (USA) |
| Reference | Meaning |
|---|---|
| B16.5 | 5/1 Secondary reference U.S. Government activity |
| B16-5-5IN-IPS150PSI-PP-FLGE | 5/9 Secondary reference U.S. Government activity |
NSN 4730-01-023-7775 is a Flange,pipe, manufactured by Ati Ladish Llc Dba Ati Wah Chang Div Ati Forged Products - Cudahy, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-023-7775 has 2 manufacturer part numbers on file: 15-5 (Ati Ladish Llc Dba Ati Wah Chang Div Ati Forged Products - Cudahy), 568-5 (Crane Co Div Valve Div).
3 possible matches (shared part number, not a government interchangeability claim): 5340-01-266-2464, 4920-01-271-5469, 6145-01-556-1015. Verify interchangeability with system specifications before substitution.
Key specifications for 15-5: Flange Diameter: 10.000 INCHES NOMINAL IN; Face Seating Surface Condition: SERRATED; Nominal Pipe Size for Which Designed: 5.560 INCHES IN; Maximum Operating Temp and Media for Which Designed: 500.0 FAHRENHEIT GAS AND 500.0 FAHRENHEIT OIL AND 500.0 FAHRENHEIT WATER DEGF. 18 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.