The Adapter,straight,flange to Tube, cataloged under National Stock Number 4730-00-784-3039, 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 28 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-784-3039 |
| Item Name | Adapter,straight,flange to Tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Flange Shape | RECTANGULAR WITH HOLES SECOND END |
| Flange Face Design | RECESSED STRAIGHT SECOND END |
| Surface Treatment Document and Classification | MIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE OUTSIDE |
| Surface Treatment Document and Classification | MIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE INSIDE |
| Surface Treatment Document and Classification | MIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE INSIDEUNABLE TO DECODE |
| Surface Treatment Document and Classification | MIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE OUTSIDEUNABLE TO DECODE |
| Connection Style | FLARED (TUBE) FIRST END |
| Nominal Length | 1.750 INCHES SECOND END IN |
| Nominal Overall Length | 1.308 INCHES IN |
| Connection Type | FLANGE SECOND END |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Material Document and Classification | QQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Outside Diameter Tube Accommodated | 0.625 INCHES FIRST END IN |
| Nominal Thread Size | 0.875 INCHES FIRST END IN |
| Seat Angle | 53.0 DEGREES FIRST END |
| Center to Center Nominal Distance Between Bolt Holes Along Width | 1.312 INCHES SECOND END IN |
| Bolt Hole Quantity | 4 SECOND END |
| Surface Treatment | OXIDE FILM INSIDE |
| Surface Treatment | OXIDE FILM OUTSIDE |
| Surface Treatment | OXIDE FILM INSIDEUNABLE TO DECODE |
| Surface Treatment | OXIDE FILM OUTSIDEUNABLE TO DECODE |
| Nominal Width | 1.750 INCHES SECOND END IN |
| Center to Center Nominal Distance Between Bolt Holes Along Length | 1.312 INCHES SECOND END IN |
| Thread Class | 3A FIRST END A |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| Thread Series Designator | UNF FIRST END |
| Nominal Thickness | 0.250 INCHES SECOND END IN |
| Recess Nominal Diameter | 0.544 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 |
|---|---|
| 204-061-635-1 | 5/9 Secondary reference U.S. Government activity |
| 204-061-635-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4730-00-784-3039 is a Adapter,straight,flange to Tube, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-00-784-3039: Flange Shape: RECTANGULAR WITH HOLES SECOND END; Flange Face Design: RECESSED STRAIGHT SECOND END; Surface Treatment Document and Classification: MIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE OUTSIDE; Surface Treatment Document and Classification: MIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE INSIDE. 28 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.