The Elbow,pipe, cataloged under National Stock Number 4730-00-640-1129, 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 12 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 4730-00-640-1129 |
| Item Name | Elbow,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Flow Angle | 45.0 DEGREES |
| Nominal Pipe Size Accommodated | 3.000 INCHES ALL ENDS IN |
| Connection Style | BEVELED (PIPE) ALL ENDS |
| Connection Type | BUTT WELD PIPE ALL ENDS |
| Operating Pressure | 1500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Leg Length | 2.000 INCHES NOMINAL ALL ENDS IN |
| Maximum Operating Temp | 538.0 CELSIUS SINGLE RESPONSE DEGC |
| Nondefinitive Spec/std Data | C TYPE AND 1 CLASS |
| Pipe Wall Thickness Designation for Which Designed | SCHEDULE 80 ALL ENDS |
| Surface Treatment | PAINT OVERALL |
| Media for Which Designed | STEAM SINGLE RESPONSE |
| Material | STEEL OVERALL |
| 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 |
|---|---|
| B16-9SCHEDULE80 | 3/1 Design control — primary reference U.S. Government activity |
NSN 4730-00-640-1129 is a Elbow,pipe, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
3 possible matches (shared part number, not a government interchangeability claim): 4730-00-640-1130, 4730-00-640-1131, 4730-00-640-1138. Verify interchangeability with system specifications before substitution.
Key specifications for 4730-00-640-1129: Flow Angle: 45.0 DEGREES; Nominal Pipe Size Accommodated: 3.000 INCHES ALL ENDS IN; Connection Style: BEVELED (PIPE) ALL ENDS; Connection Type: BUTT WELD PIPE ALL ENDS. 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.