The Reducer,tube, cataloged under National Stock Number 4730-00-533-3748, 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 21 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4730-00-533-3748 |
| Item Name | Reducer,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Furnished Items and Quantity | 2 SHORT COUPLING NUT AND 2 COMPRESSION SLEEVE |
| Connection Style | COMPRESSION (TUBE) FIRST END |
| Connection Style | COMPRESSION (TUBE) SECOND END |
| Seat Nominal Radius | 0.070 INCHES FIRST END IN |
| Seat Nominal Radius | 0.062 INCHES SECOND END IN |
| Nominal Overall Length | 0.780 INCHES IN |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Connection Type | THREADED EXTERNAL TUBE SECOND END |
| Material Document and Classification | SAE CA360 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES FIRST END IN |
| Nominal Outside Diameter Tube Accommodated | 0.188 INCHES SECOND END IN |
| Reduced Passage Nominal Inside Diameter | 0.094 INCHES SECOND END IN |
| Nominal Thread Size | 0.375 INCHES SECOND END IN |
| Nominal Thread Size | 0.438 INCHES FIRST END IN |
| Thread Class | 2A SECOND END A |
| Thread Class | 2A FIRST END A |
| Thread Quantity Per Inch | 24 FIRST END |
| Material | COPPER ALLOY 360 OVERALL |
| Thread Series Designator | UNS FIRST END |
| Thread Series Designator | UNF SECOND END |
| Reducer Type | CONCENTRIC |
| 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 |
|---|---|
| 62C-4-3 | 3/2 Design control — primary reference U.S. Government activity |
| 62CR1-4X3-16 | 5/9 Secondary reference U.S. Government activity |
| 262X4X3 | 5/9 Secondary reference Essex Brass Corporation |
NSN 4730-00-533-3748 is a Reducer,tube, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-00-533-3748: Furnished Items and Quantity: 2 SHORT COUPLING NUT AND 2 COMPRESSION SLEEVE; Connection Style: COMPRESSION (TUBE) FIRST END; Connection Style: COMPRESSION (TUBE) SECOND END; Seat Nominal Radius: 0.070 INCHES FIRST END IN. 21 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.