The Tee,tube, cataloged under National Stock Number 4730-01-115-0866, 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 17 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-115-0866 |
| Primary Part Number | W-4028 |
| Item Name | Tee,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Mueller Brass Co. |
| Status | ACTIVE |
| Connection Style | SOCKET (TUBE) SECOND END |
| Connection Style | SOCKET (TUBE) THIRD END |
| Connection Style | SOCKET (TUBE) FIRST END |
| Tubing Wall Nominal Thickness for Which Designed | 0.042 INCHES FIRST END IN |
| Tubing Wall Nominal Thickness for Which Designed | 0.035 INCHES SECOND END IN |
| Tubing Wall Nominal Thickness for Which Designed | 0.030 INCHES THIRD END IN |
| Connection Type | UNTHREADED INTERNAL TUBE FIRST END |
| Connection Type | UNTHREADED INTERNAL TUBE SECOND END |
| Connection Type | UNTHREADED INTERNAL TUBE THIRD END |
| Nominal Outside Diameter Tube Accommodated | 0.500 INCHES SECOND END IN |
| Nominal Outside Diameter Tube Accommodated | 0.375 INCHES THIRD END IN |
| Nominal Outside Diameter Tube Accommodated | 0.750 INCHES FIRST END IN |
| Leg Length | 1.100 INCHES NOMINAL THIRD END IN |
| Leg Length | 1.162 INCHES NOMINAL FIRST END IN |
| Leg Length | 1.256 INCHES NOMINAL SECOND END IN |
| Specification/standard Data | 80204-B16.22 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Material | COPPER ALLOY OVERALL |
| 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-4028 PRIMARY | Mueller Brass Co. (USA) |
| Reference | Meaning |
|---|---|
| B16.22 | 5/1 Secondary reference U.S. Government activity |
| 15-00-9068 | 5/2 Secondary reference U.S. Government activity |
| 845-2445071 ITEM 62 | 5/2 Secondary reference U.S. Government activity |
| 845-2445071 | D/9 Drawing number reference only U.S. Government activity |
NSN 4730-01-115-0866 is a Tee,tube, manufactured by Mueller Brass Co., classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-115-0866 has 1 manufacturer part number on file: W-4028 (Mueller Brass Co.).
4 possible matches (shared part number, not a government interchangeability claim): 4730-01-122-7728, 4730-01-123-1517, 4730-01-123-5704. Verify interchangeability with system specifications before substitution.
Key specifications for W-4028: Connection Style: SOCKET (TUBE) SECOND END; Connection Style: SOCKET (TUBE) THIRD END; Connection Style: SOCKET (TUBE) FIRST END; Tubing Wall Nominal Thickness for Which Designed: 0.042 INCHES FIRST END IN. 17 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.