The Elbow,flange, cataloged under National Stock Number 4730-00-128-7218, 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 22 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4730-00-128-7218 |
| Primary Part Number | 5L1723 |
| Item Name | Elbow,flange |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Flange Shape | RECTANGULAR WITH HOLES SECOND END |
| Flange Shape | RECTANGULAR WITH HOLES FIRST END |
| Flow Angle | 90.0 DEGREES |
| Flange Face Design | PLAIN FIRST END |
| Flange Face Design | PLAIN SECOND END |
| Nominal Length | 3.500 INCHES SECOND END IN |
| Nominal Length | 3.625 INCHES FIRST END IN |
| Bolt Hole Nominal Diameter | 0.406 INCHES SECOND END IN |
| Bolt Hole Nominal Diameter | 0.531 INCHES FIRST END IN |
| Leg Length | 1.500 INCHES NOMINAL FIRST END IN |
| Leg Length | 6.625 INCHES NOMINAL SECOND END IN |
| Center to Center Nominal Distance Between Bolt Holes Along Width | 2.625 INCHES FIRST END IN |
| Center to Center Nominal Distance Between Bolt Holes Along Width | 2.500 INCHES SECOND END IN |
| Bolt Hole Quantity | 4 SECOND END |
| Bolt Hole Quantity | 4 FIRST END |
| Nominal Width | 3.500 INCHES SECOND END IN |
| Nominal Width | 3.625 INCHES FIRST END IN |
| Center to Center Nominal Distance Between Bolt Holes Along Length | 2.625 INCHES FIRST END IN |
| Center to Center Nominal Distance Between Bolt Holes Along Length | 2.500 INCHES SECOND END IN |
| Material | IRON OVERALL |
| Nominal Thickness | 0.380 INCHES FIRST END IN |
| Nominal Thickness | 0.380 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 |
| Part Number | Manufacturer |
|---|---|
| 5L1723 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
| 5121723 | Striegel Supply, Inc. Dba Striegel Supply Inc (USA) |
| Reference | Meaning |
|---|---|
| 5121723 | C/1 Advisory reference — outside the item-of-supply concept Schoonmaker Service Parts Co Inc |
NSN 4730-00-128-7218 is a Elbow,flange, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-128-7218 has 2 manufacturer part numbers on file: 5L1723 (Caterpillar Inc Div Caterpillar Defense), 5121723 (Striegel Supply, Inc. Dba Striegel Supply Inc).
Key specifications for 5L1723: Flange Shape: RECTANGULAR WITH HOLES SECOND END; Flange Shape: RECTANGULAR WITH HOLES FIRST END; Flow Angle: 90.0 DEGREES; Flange Face Design: PLAIN FIRST END. 22 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.