The Adapter,straight,flange to Tube, cataloged under National Stock Number 4730-01-167-9113, 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 Legacy Am&m. Government technical data includes 20 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-167-9113 |
| Primary Part Number | L4801638-003 |
| Item Name | Adapter,straight,flange to Tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | The Boeing Company Div Legacy Am&m |
| Status | ACTIVE |
| Flange Shape | ROUND WITH HOLES SECOND END |
| Flange Face Design | PLAIN SECOND END |
| Connection Style | INVERTED FLARE (TUBE) FIRST END |
| Bolt Circle Nominal Diameter | 4.400 INCHES SECOND END IN |
| Nominal Overall Length | 1.200 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 |
| Bolt Hole Nominal Diameter | 0.204 INCHES SECOND END IN |
| Nominal Outside Diameter Tube Accommodated | 2.750 INCHES FIRST END IN |
| Nominal Thread Size | 3.250 INCHES FIRST END IN |
| Seat Angle | 20.0 DEGREES FIRST END |
| Nominal Outside Diameter | 5.450 INCHES SECOND END IN |
| Bolt Hole Quantity | 7 SECOND END |
| Surface Treatment | ANODIZE OVERALL |
| Thread Class | 2A FIRST END A |
| Thread Quantity Per Inch | 16 FIRST END |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| Thread Series Designator | UN FIRST END |
| Nominal Thickness | 0.115 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 |
|---|---|
| L4801638-003 PRIMARY | The Boeing Company Div Legacy Am&m (USA) |
| Reference | Meaning |
|---|---|
| L4801638 | D/9 Drawing number reference only The Boeing Company Div Legacy Am&m |
NSN 4730-01-167-9113 is a Adapter,straight,flange to Tube, manufactured by The Boeing Company Div Legacy Am&m, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-167-9113 has 1 manufacturer part number on file: L4801638-003 (The Boeing Company Div Legacy Am&m).
Key specifications for L4801638-003: Flange Shape: ROUND WITH HOLES SECOND END; Flange Face Design: PLAIN SECOND END; Connection Style: INVERTED FLARE (TUBE) FIRST END; Bolt Circle Nominal Diameter: 4.400 INCHES SECOND END IN. 20 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.