The Elbow,flange to Pipe, cataloged under National Stock Number 4730-01-449-4525, 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 Caterpillar Inc Div Caterpillar Defense. Government technical data includes 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-449-4525 |
| Primary Part Number | 8N7639 |
| Item Name | Elbow,flange to Pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Flange Shape | OVAL WITH HOLES SECOND END |
| Flow Angle | 30.0 DEGREES |
| Nominal Pipe Size Accommodated | 38.0 MILLIMETERS FIRST END MM |
| Connection Style | GROOVED (PIPE) FIRST END |
| Connection Type | FLANGE SECOND END |
| Connection Type | UNTHREADED EXTERNAL PIPE FIRST END |
| Bolt Hole Nominal Diameter | 9.5 MILLIMETERS SECOND END MM |
| Operating Pressure | 300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Bolt Hole Quantity | 2 SECOND END |
| Media for Which Designed | WATER SINGLE RESPONSE |
| Material | IRON CAST OVERALL |
| Nominal Thickness | 19.0 MILLIMETERS SECOND END MM |
| 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 |
|---|---|
| 1267159 ITEM 23 | Caterpillar Inc Div Caterpillar Defense (USA) |
| 8N7639 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
| Reference | Meaning |
|---|---|
| 1267159 | D/9 Drawing number reference only Caterpillar Inc Div Caterpillar Defense |
NSN 4730-01-449-4525 is a Elbow,flange to Pipe, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-449-4525 has 2 manufacturer part numbers on file: 1267159 ITEM 23 (Caterpillar Inc Div Caterpillar Defense), 8N7639 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 8N7639: Flange Shape: OVAL WITH HOLES SECOND END; Flow Angle: 30.0 DEGREES; Nominal Pipe Size Accommodated: 38.0 MILLIMETERS FIRST END MM; Connection Style: GROOVED (PIPE) FIRST END. 12 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.