The Elbow,flange to Pipe, cataloged under National Stock Number 4730-01-318-2845, 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12 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-318-2845 |
| Item Name | Elbow,flange to Pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Flange Shape | ROUND WITH HOLES SECOND END |
| Flow Angle | 90.0 DEGREES |
| Nominal Pipe Size Accommodated | 4.000 INCHES FIRST END IN |
| Connection Style | REDUCED SOCKET (PIPE) FIRST END |
| Connection Type | FLANGE SECOND END |
| Connection Type | UNTHREADED EXTERNAL PIPE FIRST END |
| Material Document and Classification | MIL-C-20159,TYPE1 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Leg Length | 6.500 INCHES NOMINAL SECOND END IN |
| Leg Length | 5.000 INCHES NOMINAL FIRST END IN |
| Nominal Outside Diameter | 8.688 INCHES SECOND END IN |
| Material | NICKEL ALLOY OVERALL |
| Nominal Thickness | 1.250 INCHES SECOND END IN |
| 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 |
|---|---|
| 4684449-T/F86 | 5/2 Secondary reference U.S. Government activity |
| 2621-166-01 PIECE 120 | 3/2 Design control — primary reference U.S. Government activity |
| 2621-166-01 | D/9 Drawing number reference only U.S. Government activity |
| 4684449 | D/9 Drawing number reference only U.S. Government activity |
NSN 4730-01-318-2845 is a Elbow,flange to Pipe, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 4730-01-325-6966, 4730-01-343-0477. Verify interchangeability with system specifications before substitution.
Key specifications for 4730-01-318-2845: Flange Shape: ROUND WITH HOLES SECOND END; Flow Angle: 90.0 DEGREES; Nominal Pipe Size Accommodated: 4.000 INCHES FIRST END IN; Connection Style: REDUCED SOCKET (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.