The Tee,pipe, cataloged under National Stock Number 4730-01-171-3338, 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 Macleod Inc. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-171-3338 |
| Primary Part Number | B1900-6038 |
| Item Name | Tee,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Macleod Inc |
| Status | ACTIVE |
| Connection Style | PLAIN (PIPE) ALL ENDS |
| Inlet Location | HIGH HEEL SINGLE INLET |
| Connection Type | THREADED INTERNAL PIPE FIRST END |
| Connection Type | THREADED INTERNAL PIPE SECOND END |
| Connection Type | THREADED INTERNAL PIPE THIRD END |
| Leg Length | 3.812 INCHES NOMINAL ALL ENDS IN |
| Nominal Thread Size | 0.250 INCHES INLET IN |
| Nominal Thread Size | 4.000 INCHES ALL ENDS IN |
| Material | IRON CAST OVERALL |
| Thread Series Designator | NPT INLET |
| Thread Series Designator | NPT ALL ENDS |
| 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 |
|---|---|
| B1900-6038 PRIMARY | Macleod Inc (USA) |
| Reference | Meaning |
|---|---|
| 1105-4IN | 5/9 Secondary reference U.S. Government activity |
NSN 4730-01-171-3338 is a Tee,pipe, manufactured by Macleod Inc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-171-3338 has 1 manufacturer part number on file: B1900-6038 (Macleod Inc).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-200-9337. Verify interchangeability with system specifications before substitution.
Key specifications for B1900-6038: Connection Style: PLAIN (PIPE) ALL ENDS; Inlet Location: HIGH HEEL SINGLE INLET; Connection Type: THREADED INTERNAL PIPE FIRST END; Connection Type: THREADED INTERNAL PIPE SECOND END. 11 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.