The Adapter,straight,flange to Tube, cataloged under National Stock Number 4730-01-133-4556, 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 30 specifications, cited from the U.S. Government catalog. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-133-4556 |
| 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 | RAISED STRAIGHT SECOND END |
| Flange Face Design | UNABLE TO DECODE |
| Surface Treatment Document and Classification | UNABLE TO DECODE |
| Surface Treatment Document and Classification | QQ-P-416,TYPE 2,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Connection Style | FLARED (TUBE) FIRST END |
| Nominal Length | 3.000 INCHES SECOND END IN |
| Nominal Overall Length | 2.125 INCHES IN |
| Connection Type | FLANGE SECOND END |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Material Document and Classification | QQ-S-637 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Material Document and Classification | UNABLE TO DECODE |
| Bolt Hole Nominal Diameter | 0.333 INCHES SECOND END IN |
| Nominal Outside Diameter Tube Accommodated | 2.000 INCHES FIRST END IN |
| Nominal Outside Diameter Tube Accommodated | UNABLE TO DECODE |
| Operating Pressure | 1500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Nominal Thread Size | 2.500 INCHES FIRST END IN |
| Seat Angle | 37.0 DEGREES FIRST END |
| Specification/standard Data | 81343-AS4875/1 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Maximum Operating Temp | 225.0 FAHRENHEIT FIRST RESPONSE DEGF |
| Maximum Operating Temp | -65.0 FAHRENHEIT SECOND RESPONSE DEGF |
| Center to Center Nominal Distance Between Bolt Holes Along Width | 2.375 INCHES SECOND END IN |
| Bolt Hole Quantity | 4 SECOND END |
| Surface Treatment | CADMIUM OVERALL |
| Surface Treatment | UNABLE TO DECODE |
| Nominal Width | 3.000 INCHES SECOND END IN |
| Center to Center Nominal Distance Between Bolt Holes Along Length | 2.370 INCHES SECOND END IN |
| Media for Which Designed | UNABLE TO DECODE |
| Media for Which Designed | OXYGEN, GASEOUS SECOND RESPONSE |
| Media for Which Designed | HYDRAULIC FLUID FIRST RESPONSE |
| 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 |
|---|---|
| AS4875/1/32 | 5/9 Secondary reference U.S. Government activity |
| MIL-F-5509 | 5/9 Secondary reference U.S. Government activity |
| MS20760-32 | 2/2 Government specification standardization U.S. Government activity |
| MIL-F-5509 | 5/9 Secondary reference U.S. Government activity |
| SAE-AS4875/1 | 5/1 Secondary reference Sae International Dba Sae International |
| AS4875/1/32 | 5/1 Secondary reference Sae International Dba Sae International |
NSN 4730-01-133-4556 is a Adapter,straight,flange to Tube, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-01-133-4556: Flange Shape: RECTANGULAR WITH HOLES SECOND END; Flange Face Design: RAISED STRAIGHT SECOND END; Flange Face Design: UNABLE TO DECODE; Surface Treatment Document and Classification: UNABLE TO DECODE. 30 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.