The Reducer,tube, cataloged under National Stock Number 4730-01-028-5542, 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 Lbc Aquisitions Llc Dba Lee Brass Div Lee Brass Foundry, Llc. Government technical data includes 14 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4730-01-028-5542 |
| Primary Part Number | 5157-596 |
| Item Name | Reducer,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Lbc Aquisitions Llc Dba Lee Brass Div Lee Brass Foundry, Llc |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 PREINSERTED BRAZING RING |
| Connection Style | PLAIN (TUBE) SECOND END |
| Connection Style | STREAMLINED W/ ONE BRAZING RING (TUBE) FIRST END |
| Tubing Wall Nominal Thickness for Which Designed | 0.170 INCHES FIRST END IN |
| Tubing Wall Nominal Thickness for Which Designed | 0.340 INCHES SECOND END IN |
| Nominal Overall Length | 2.875 INCHES IN |
| Connection Type | UNTHREADED INTERNAL TUBE FIRST END |
| Connection Type | UNTHREADED EXTERNAL TUBE SECOND END |
| Nominal Outside Diameter Tube Accommodated | 2.375 INCHES FIRST END IN |
| Nominal Outside Diameter Tube Accommodated | 4.500 INCHES SECOND END IN |
| Maximum Operating Temp | 65.6 CELSIUS SINGLE RESPONSE DEGC |
| Media for Which Designed | WATER-OIL-GAS SINGLE RESPONSE |
| Material | COPPER ALLOY OVERALL |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 5157-596 PRIMARY | Lbc Aquisitions Llc Dba Lee Brass Div Lee Brass Foundry, Llc (USA) |
| NS269-6432 | Signal-Hill Corp (USA) |
| Reference | Meaning |
|---|---|
| 00699067574519 | 5/1 Secondary reference Flagg Stanley G & Co Inc Dba Flagg Brass |
| 5157-596 | 5/9 Secondary reference Flagg Stanley G & Co Inc Dba Flagg Brass |
NSN 4730-01-028-5542 is a Reducer,tube, manufactured by Lbc Aquisitions Llc Dba Lee Brass Div Lee Brass Foundry, Llc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-028-5542 has 2 manufacturer part numbers on file: 5157-596 (Lbc Aquisitions Llc Dba Lee Brass Div Lee Brass Foundry, Llc), NS269-6432 (Signal-Hill Corp).
Key specifications for 5157-596: Furnished Items and Quantity: 1 PREINSERTED BRAZING RING; Connection Style: PLAIN (TUBE) SECOND END; Connection Style: STREAMLINED W/ ONE BRAZING RING (TUBE) FIRST END; Tubing Wall Nominal Thickness for Which Designed: 0.170 INCHES FIRST END IN. 14 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.