The Elbow,flange to Boss, cataloged under National Stock Number 4730-01-114-4549, 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 25 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-114-4549 |
| Item Name | Elbow,flange to Boss |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Flange Shape | RECTANGULAR WITH HOLES FIRST END |
| Flow Angle | 90.0 DEGREES |
| Flange Face Design | PLAIN WITH GASKET GROOVE FIRST END |
| Surface Treatment Document and Classification | MIL-A-8625,TYPE 3,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Surface Treatment Document and Classification | MIL-A-8625,TYPE 3,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALLUNABLE TO DECODE |
| Connection Style | GASKET SEAL (BOSS) SECOND END |
| Nominal Length | 2.875 INCHES FIRST END IN |
| Connection Type | THREADED INTERNAL BOSS SECOND END |
| Connection Type | FLANGE FIRST END |
| Material Document and Classification | QQ-A-250/6,5083-H321 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-250/7,5086-H32 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-200/4,5083-H111 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-200/5,5083-H111 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Bolt Hole Nominal Diameter | 0.423 INCHES FIRST END IN |
| Leg Length | 0.875 INCHES NOMINAL SECOND END IN |
| Leg Length | 1.750 INCHES NOMINAL FIRST END IN |
| Nominal Thread Size | 1.312 INCHES SECOND END IN |
| Center to Center Nominal Distance Between Bolt Holes Along Width | 1.875 INCHES FIRST END IN |
| Bolt Hole Quantity | 3 FIRST END |
| Surface Treatment | ANODIZE OVERALL |
| Surface Treatment | ANODIZE OVERALLUNABLE TO DECODE |
| Nominal Width | 2.750 INCHES FIRST END IN |
| Center to Center Nominal Distance Between Bolt Holes Along Length | 1.875 INCHES FIRST END IN |
| Thread Class | 2B SECOND END |
| Thread Quantity Per Inch | 12 SECOND END |
| Material | ALUMINUM ALLOY OVERALL |
| Thread Series Designator | UN SECOND END |
| Nominal Thickness | 0.315 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 |
| Reference | Meaning |
|---|---|
| 2600619 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4730-01-114-4549 is a Elbow,flange to Boss, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-01-114-4549: Flange Shape: RECTANGULAR WITH HOLES FIRST END; Flow Angle: 90.0 DEGREES; Flange Face Design: PLAIN WITH GASKET GROOVE FIRST END; Surface Treatment Document and Classification: MIL-A-8625,TYPE 3,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL. 25 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.