The Reducer,tube, cataloged under National Stock Number 4730-01-012-1672, 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 15 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-012-1672 |
| Primary Part Number | 5157-039 |
| 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 | SOCKET BRAZING RING (TUBE) FIRST END |
| Connection Style | PLAIN (TUBE) SECOND END |
| Tubing Wall Nominal Thickness for Which Designed | 0.045 INCHES FIRST END IN |
| Nominal Overall Length | 0.750 INCHES IN |
| Connection Type | UNTHREADED INTERNAL TUBE FIRST END |
| Connection Type | UNTHREADED EXTERNAL TUBE SECOND END |
| Material Document and Classification | QQ-C-390 ALLOY D4 OR D5 OR BRONZE FED SPEC ALL MATERIAL RESPONSES OVERALL |
| Nominal Outside Diameter Tube Accommodated | 0.405 INCHES FIRST END IN |
| Nominal Outside Diameter Tube Accommodated | 0.540 INCHES SECOND END IN |
| Operating Pressure | 400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Maximum Operating Temp | 65.5 CELSIUS SINGLE RESPONSE DEGC |
| Nondefinitive Spec/std Data | A TYPE |
| 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 |
|---|---|
| 5157-039 PRIMARY | Lbc Aquisitions Llc Dba Lee Brass Div Lee Brass Foundry, Llc (USA) |
| Reference | Meaning |
|---|---|
| 5157-039 | 5/9 Secondary reference Lee Brass Co |
| MIL-F-1183 | 5/9 Secondary reference U.S. Government activity |
| 00699067569713 | 5/1 Secondary reference Flagg Stanley G & Co Inc Dba Flagg Brass |
| 5157-039 | 5/9 Secondary reference Flagg Stanley G & Co Inc Dba Flagg Brass |
NSN 4730-01-012-1672 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 4730-01-012-1672 has 1 manufacturer part number on file: 5157-039 (Lbc Aquisitions Llc Dba Lee Brass Div Lee Brass Foundry, Llc).
Key specifications for 5157-039: Furnished Items and Quantity: 1 PREINSERTED BRAZING RING; Connection Style: SOCKET BRAZING RING (TUBE) FIRST END; Connection Style: PLAIN (TUBE) SECOND END; Tubing Wall Nominal Thickness for Which Designed: 0.045 INCHES FIRST END IN. 15 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.