The Reducer,tube, cataloged under National Stock Number 4730-00-471-8529, 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 26 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-471-8529 |
| Item Name | Reducer,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-A-8625,TY2,CL 1 MIL SPEC SINGLE TREATMENT RESPONSE INSIDEMIL-A-8625,TY2,CL 1 MIL SPEC SINGLE TREATMENT RESPONSE INSIDE |
| Surface Treatment Document and Classification | MIL-A-8625,TY2,CL 1 MIL SPEC SINGLE TREATMENT RESPONSE OUTSIDEMIL-A-8625,TY2,CL 1 MIL SPEC SINGLE TREATMENT RESPONSE OUTSIDE |
| Connection Style | FLARELESS (TUBE) SECOND ENDFLARELESS (TUBE) SECOND END |
| Connection Style | FLARELESS (TUBE) FIRST ENDFLARELESS (TUBE) FIRST END |
| Nominal Overall Length | 1.750 INCHES1.750 INCHES IN |
| Connection Type | THREADED EXTERNAL TUBE SECOND ENDTHREADED EXTERNAL TUBE SECOND END |
| Connection Type | THREADED EXTERNAL TUBE FIRST ENDTHREADED EXTERNAL TUBE FIRST END |
| Material Document and Classification | QQ-A-225,T6 OR T62 OR T851 FED SPEC SINGLE MATERIAL RESPONSE OVERALLQQ-A-225,T6 OR T62 OR T851 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Outside Diameter Tube Accommodated | 1.000 INCHES FIRST END1.000 INCHES FIRST END IN |
| Nominal Outside Diameter Tube Accommodated | 0.750 INCHES SECOND END0.750 INCHES SECOND END IN |
| Operating Pressure | 1500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE1500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Nominal Thread Size | 1.312 INCHES FIRST END1.312 INCHES FIRST END IN |
| Nominal Thread Size | 1.062 INCHES SECOND END1.062 INCHES SECOND END IN |
| Seat Angle | 12.0 DEGREES FIRST END12.0 DEGREES FIRST END |
| Seat Angle | 12.0 DEGREES SECOND END12.0 DEGREES SECOND END |
| Maximum Operating Temp | 135.0 CELSIUS SINGLE RESPONSE135.0 CELSIUS SINGLE RESPONSE DEGC |
| Surface Treatment | ANODIZE INSIDEANODIZE INSIDE |
| Surface Treatment | ANODIZE OUTSIDEANODIZE OUTSIDE |
| Thread Class | 3A SECOND END3A SECOND END A |
| Thread Class | 3A FIRST END3A FIRST END A |
| Thread Quantity Per Inch | 12 FIRST END12 FIRST END |
| Thread Quantity Per Inch | 12 SECOND END12 SECOND END |
| Material | ALUMINUM OVERALLALUMINUM OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT (UNJ) FIRST ENDUNIFIED NATIONAL JOINT (UNJ) FIRST END |
| Thread Series Designator | UNIFIED NATIONAL JOINT (UNJ) SECOND ENDUNIFIED NATIONAL JOINT (UNJ) SECOND END |
| Reducer Type | CONCENTRICCONCENTRIC |
| 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 |
|---|---|
| 205-076-393-1 | 5/9 Secondary reference Skyline Industries, Inc |
| 205-076-293-1 | 3/2 Design control — primary reference U.S. Government activity |
| 205-076-293-001 | 5/2 Secondary reference U.S. Government activity |
NSN 4730-00-471-8529 is a Reducer,tube, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-00-471-8529: Surface Treatment Document and Classification: MIL-A-8625,TY2,CL 1 MIL SPEC SINGLE TREATMENT RESPONSE INSIDEMIL-A-8625,TY2,CL 1 MIL SPEC SINGLE TREATMENT RESPONSE INSIDE; Surface Treatment Document and Classification: MIL-A-8625,TY2,CL 1 MIL SPEC SINGLE TREATMENT RESPONSE OUTSIDEMIL-A-8625,TY2,CL 1 MIL SPEC SINGLE TREATMENT RESPONSE OUTSIDE; Connection Style: FLARELESS (TUBE) SECOND ENDFLARELESS (TUBE) SECOND END; Connection Style: FLARELESS (TUBE) FIRST ENDFLARELESS (TUBE) FIRST END. 26 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.