The Adapter,straight,flange to Tube, cataloged under National Stock Number 4730-01-258-5077, 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 Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-258-5077 |
| Primary Part Number | U20210ADN |
| Item Name | Adapter,straight,flange to Tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution |
| Status | ACTIVE |
| Flange Shape | RECTANGULAR WITH HOLES SECOND END |
| Flange Face Design | PLAIN SECOND END |
| Surface Treatment Document and Classification | MIL-L-8937 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Surface Treatment Document and Classification | MIL-L-8937 MIL SPEC SINGLE TREATMENT RESPONSE OVERALLUNABLE TO DECODE |
| Connection Style | PLAIN (TUBE) FIRST END |
| Nominal Length | 1.750 INCHES SECOND END IN |
| Nominal Overall Length | 0.970 INCHES IN |
| Connection Type | FLANGE SECOND END |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Bolt Hole Nominal Diameter | 0.206 INCHES SECOND END IN |
| Nominal Outside Diameter Tube Accommodated | 1.000 INCHES FIRST END IN |
| Nominal Thread Size | 1.468 INCHES FIRST END IN |
| Center to Center Nominal Distance Between Bolt Holes Along Width | 1.855 INCHES SECOND END IN |
| Bolt Hole Quantity | 4 SECOND END |
| Surface Treatment | ANODIZE AND DICHROMATE AND LUBRICANT DRY FILM OVERALL |
| Nominal Width | 1.750 INCHES SECOND END IN |
| Center to Center Nominal Distance Between Bolt Holes Along Length | 1.855 INCHES SECOND END IN |
| Thread Class | 2A FIRST END A |
| Thread Quantity Per Inch | 20 FIRST END |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| Thread Series Designator | UNS FIRST END |
| Nominal Thickness | 0.156 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 |
|---|---|
| U20200 | Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution (USA) |
| U20210ADN PRIMARY | Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution (USA) |
| Reference | Meaning |
|---|---|
| U20210ADN | 3/9 Design control — primary reference Eaton Aviation Corporation |
| U20200 | 5/9 Secondary reference Eaton Aviation Corporation |
NSN 4730-01-258-5077 is a Adapter,straight,flange to Tube, manufactured by Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-258-5077 has 2 manufacturer part numbers on file: U20200 (Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution), U20210ADN (Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution).
Key specifications for U20210ADN: Flange Shape: RECTANGULAR WITH HOLES SECOND END; Flange Face Design: PLAIN SECOND END; Surface Treatment Document and Classification: MIL-L-8937 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Surface Treatment Document and Classification: MIL-L-8937 MIL SPEC SINGLE TREATMENT RESPONSE OVERALLUNABLE TO DECODE. 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.