The Reducer,tube, cataloged under National Stock Number 4730-00-809-9656, 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 Mueller Brass Co.. Government technical data includes 10 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-809-9656 |
| Primary Part Number | W1377 |
| Item Name | Reducer,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Mueller Brass Co. |
| Status | ACTIVE |
| Connection Style | PLAIN (TUBE) SECOND END |
| Connection Style | SOCKET (TUBE) FIRST END |
| Tubing Wall Nominal Thickness for Which Designed | 0.109 INCHES FIRST END IN |
| Nominal Overall Length | 4.188 INCHES IN |
| Connection Type | UNTHREADED INTERNAL TUBE FIRST END |
| Connection Type | UNTHREADED EXTERNAL TUBE SECOND END |
| Nominal Outside Diameter Tube Accommodated | 3.125 INCHES FIRST END IN |
| Nominal Outside Diameter Tube Accommodated | 2.125 INCHES SECOND END IN |
| Material | COPPER 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 |
|---|---|
| W1377 PRIMARY | Mueller Brass Co. (USA) |
| Reference | Meaning |
|---|---|
| W1377 | C/1 Advisory reference — outside the item-of-supply concept Downey Valve Co Inc |
| 58893-5034 | C/1 Advisory reference — outside the item-of-supply concept Tld Ace Corp Div Tld Ace |
NSN 4730-00-809-9656 is a Reducer,tube, manufactured by Mueller Brass Co., classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-809-9656 has 1 manufacturer part number on file: W1377 (Mueller Brass Co.).
Key specifications for W1377: Connection Style: PLAIN (TUBE) SECOND END; Connection Style: SOCKET (TUBE) FIRST END; Tubing Wall Nominal Thickness for Which Designed: 0.109 INCHES FIRST END IN; Nominal Overall Length: 4.188 INCHES IN. 10 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.