The Elbow,flange to Tube, cataloged under National Stock Number 4730-01-326-9059, 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 Triumph Manufacturing Company, Inc.. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-326-9059 |
| Primary Part Number | 2621-166-03 PIECE 88 |
| Item Name | Elbow,flange to Tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Triumph Manufacturing Company, Inc. |
| Status | ACTIVE |
| Flange Shape | ROUND WITH HOLES FIRST END |
| Flow Angle | 90.0 DEGREES |
| Flange Face Design | PLAIN FIRST END |
| Connection Style | BEVELED (TUBE) SECOND END |
| Bolt Circle Nominal Diameter | 6.562 INCHES FIRST END IN |
| Connection Type | FLANGE FIRST END |
| Connection Type | BUTT WELD TUBE SECOND END |
| Material Document and Classification | MIL-C-20159,TYPE 1 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Bolt Hole Nominal Diameter | 0.562 INCHES FIRST END IN |
| Nominal Outside Diameter Tube Accommodated | 4.000 INCHES SECOND END IN |
| Operating Pressure | 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Leg Length | 7.000 INCHES MINIMUM AND 7.120 INCHES MAXIMUM SECOND END IN |
| Leg Length | 9.000 INCHES MINIMUM AND 9.120 INCHES MAXIMUM FIRST END IN |
| Nominal Outside Diameter | 7.690 INCHES FIRST END IN |
| Bolt Hole Quantity | 8 FIRST END |
| Material | COPPER ALLOY OVERALL |
| Nominal Thickness | 0.470 INCHES FIRST 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 |
| Part Number | Manufacturer |
|---|---|
| 2621-166-03 PIECE 88 PRIMARY | Triumph Manufacturing Company, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 2621-166-03 PIECE 88 | 5/2 Secondary reference U.S. Government activity |
| 4687601 PC 88 | 5/2 Secondary reference U.S. Government activity |
| 6687601 | D/9 Drawing number reference only U.S. Government activity |
NSN 4730-01-326-9059 is a Elbow,flange to Tube, manufactured by Triumph Manufacturing Company, Inc., classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-326-9059 has 1 manufacturer part number on file: 2621-166-03 PIECE 88 (Triumph Manufacturing Company, Inc.).
Key specifications for 2621-166-03 PIECE 88: Flange Shape: ROUND WITH HOLES FIRST END; Flow Angle: 90.0 DEGREES; Flange Face Design: PLAIN FIRST END; Connection Style: BEVELED (TUBE) SECOND END. 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.