The Sleeve,flared,tube Fitting, cataloged under National Stock Number 4730-00-984-8523, 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 The Boeing Company Div Defense. Government technical data includes 10 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-984-8523 |
| Primary Part Number | 7M51-5 |
| Item Name | Sleeve,flared,tube Fitting |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Seat Angle in Deg | 33.0 |
| Style Designator | SLEEVE |
| Sleeve Outside Diameter | 0.366 INCHES NOMINAL IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Surface Treatment | CADMIUM AND CHROMATE |
| Flange Width | 0.156 INCHES NOMINAL IN |
| Material | STEEL COMP 4130 OR STEEL COMP 4140 |
| Flange Outside Diameter | 0.445 INCHES NOMINAL IN |
| Metallic Hardness Rating | 35.0 MINIMUM ROCKWELL C AND 40.0 MAXIMUM ROCKWELL C |
| Hose/tube Outside Diameter for Which Designed | 0.313 INCHES NOMINAL 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 |
|---|---|
| 7M51-5 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| 7M51-5 | 5/9 Secondary reference Refa International Inc. |
| 75M51 | D/9 Drawing number reference only The Boeing Company Div Defense |
NSN 4730-00-984-8523 is a Sleeve,flared,tube Fitting, manufactured by The Boeing Company Div Defense, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-984-8523 has 1 manufacturer part number on file: 7M51-5 (The Boeing Company Div Defense).
Key specifications for 7M51-5: Seat Angle in Deg: 33.0; Style Designator: SLEEVE; Overall Length: 0.438 INCHES NOMINAL IN; Sleeve Outside Diameter: 0.366 INCHES NOMINAL IN. 10 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.