The Tee,pipe to Tube, cataloged under National Stock Number 4730-00-278-8908, 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 14 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-278-8908 |
| Primary Part Number | W-4208 |
| Item Name | Tee,pipe to Tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Mueller Brass Co. |
| Status | ACTIVE |
| Connection Style | PLAIN (PIPE) THIRD END |
| Connection Style | SOCKET (TUBE) SECOND END |
| Connection Style | SOCKET (TUBE) FIRST END |
| Connection Type | UNTHREADED INTERNAL TUBE FIRST END |
| Connection Type | UNTHREADED INTERNAL TUBE SECOND END |
| Connection Type | THREADED INTERNAL PIPE THIRD END |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES FIRST END IN |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES SECOND END IN |
| Leg Length | 0.430 INCHES MINIMUM AND 0.444 INCHES MAXIMUM FIRST END IN |
| Leg Length | 0.430 INCHES MINIMUM AND 0.444 INCHES MAXIMUM SECOND END IN |
| Leg Length | 0.550 INCHES MINIMUM AND 0.574 INCHES MAXIMUM THIRD END IN |
| Nominal Thread Size | 0.250 INCHES THIRD END IN |
| Material | COPPER ALLOY OVERALL |
| Thread Series Designator | NPTF THIRD END |
| 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 |
|---|---|
| W-4208 PRIMARY | Mueller Brass Co. (USA) |
| Reference | Meaning |
|---|---|
| 334869P01 | 5/9 Secondary reference Meggitt Defense Systems, Inc. Dba Meggitt Western Design |
| 13214E3411-2 | 3/2 Design control — primary reference U.S. Government activity |
| 334869P01 | C/1 Advisory reference — outside the item-of-supply concept Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc |
| 334869 | 5/9 Secondary reference Howden Fluid Systems |
| 334869P01 | 5/9 Secondary reference Howden Fluid Systems |
NSN 4730-00-278-8908 is a Tee,pipe to Tube, manufactured by Mueller Brass Co., classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-278-8908 has 1 manufacturer part number on file: W-4208 (Mueller Brass Co.).
1 possible match (shared part number, not a government interchangeability claim): 5330-01-480-7581. Verify interchangeability with system specifications before substitution.
Key specifications for W-4208: Connection Style: PLAIN (PIPE) THIRD END; Connection Style: SOCKET (TUBE) SECOND END; Connection Style: SOCKET (TUBE) FIRST END; Connection Type: UNTHREADED INTERNAL TUBE FIRST END. 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.