The Adapter,straight,pipe to Hose, cataloged under National Stock Number 4730-01-154-5439, 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 Tylok International, Inc.. Government technical data includes 9 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-154-5439 |
| Primary Part Number | B4-1MPHC-3 |
| Item Name | Adapter,straight,pipe to Hose |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Tylok International, Inc. |
| Status | ACTIVE |
| Connection Style | BARBED OR BEADED (HOSE) SECOND END |
| Connection Style | PLAIN (PIPE) FIRST END |
| Nominal Inside Diameter Hose Accommodated | 0.187 INCHES SECOND END IN |
| Nominal Overall Length | 1.370 INCHES IN |
| Connection Type | UNTHREADED EXTERNAL HOSE SECOND END |
| Connection Type | THREADED EXTERNAL PIPE FIRST END |
| Nominal Thread Size | 0.250 INCHES FIRST END IN |
| Material | COPPER ALLOY OVERALL |
| Thread Series Designator | NPTF FIRST 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 |
|---|---|
| B4-1MPHC-3 PRIMARY | Tylok International, Inc. (USA) |
| Reference | Meaning |
|---|---|
| KF03-04PS | 5/9 Secondary reference Imperial |
| 223593 | 5/9 Secondary reference Case Mfg Co |
NSN 4730-01-154-5439 is a Adapter,straight,pipe to Hose, manufactured by Tylok International, Inc., classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-154-5439 has 1 manufacturer part number on file: B4-1MPHC-3 (Tylok International, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 5935-01-602-3170. Verify interchangeability with system specifications before substitution.
Key specifications for B4-1MPHC-3: Connection Style: BARBED OR BEADED (HOSE) SECOND END; Connection Style: PLAIN (PIPE) FIRST END; Nominal Inside Diameter Hose Accommodated: 0.187 INCHES SECOND END IN; Nominal Overall Length: 1.370 INCHES IN. 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.