The Tee,pipe, cataloged under National Stock Number 4730-01-309-3388, 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 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-309-3388 |
| Primary Part Number | W-40235 |
| Item Name | Tee,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Mueller Brass Co. |
| Status | ACTIVE |
| Nominal Pipe Size Accommodated | 0.375 INCHES SECOND END IN |
| Nominal Pipe Size Accommodated | 0.375 INCHES FIRST END IN |
| Nominal Pipe Size Accommodated | 0.188 INCHES THIRD END IN |
| Connection Style | PLAIN (PIPE) THIRD END |
| Connection Style | PLAIN (PIPE) FIRST END |
| Connection Type | UNTHREADED EXTERNAL PIPE SECOND END |
| Connection Type | UNTHREADED EXTERNAL PIPE FIRST END |
| Connection Type | UNTHREADED EXTERNAL PIPE THIRD END |
| 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 |
|---|---|
| 1603AS649-7 | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| W-40235 PRIMARY | Mueller Brass Co. (USA) |
| Reference | Meaning |
|---|---|
| 1603AS649 | 7/1 Vendor item drawing reference Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
NSN 4730-01-309-3388 is a Tee,pipe, manufactured by Mueller Brass Co., classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-309-3388 has 2 manufacturer part numbers on file: 1603AS649-7 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier), W-40235 (Mueller Brass Co.).
3 possible matches (shared part number, not a government interchangeability claim): 4730-01-309-3389, 4730-01-309-3390, 4730-01-309-3391. Verify interchangeability with system specifications before substitution.
Key specifications for W-40235: Nominal Pipe Size Accommodated: 0.375 INCHES SECOND END IN; Nominal Pipe Size Accommodated: 0.375 INCHES FIRST END IN; Nominal Pipe Size Accommodated: 0.188 INCHES THIRD END IN; Connection Style: PLAIN (PIPE) THIRD END. 9 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.