The Plug,pipe, cataloged under National Stock Number 4730-01-428-4422, 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 Parker-Hannifin Corporation Div Instrumentation Products Division. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-428-4422 |
| Primary Part Number | 4-PH-B-C3 |
| Item Name | Plug,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Parker-Hannifin Corporation Div Instrumentation Products Division |
| Status | ACTIVE |
| Nominal Pipe Size for Which Designed | 0.250 INCHES IN |
| Connection Style | PLAIN |
| Drive End Style | HEXAGON |
| Criticality Code Justification | FEAT |
| Thread Direction | RIGHT-HAND EXTERNAL |
| Nominal Thread Size | 0.250 INCHES EXTERNAL IN |
| Body Type | SOLID |
| Material | BRASS OVERALL |
| Thread Series Designator | NPT EXTERNAL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 4-PH-B-C3 PRIMARY | Parker-Hannifin Corporation Div Instrumentation Products Division (USA) |
| Reference | Meaning |
|---|---|
| 3307874-2 | 5/9 Secondary reference U.S. Government activity |
| 3307874 | D/9 Drawing number reference only U.S. Government activity |
| 3307874-3 | 5/2 Secondary reference U.S. Government activity |
NSN 4730-01-428-4422 is a Plug,pipe, manufactured by Parker-Hannifin Corporation Div Instrumentation Products Division, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-428-4422 has 1 manufacturer part number on file: 4-PH-B-C3 (Parker-Hannifin Corporation Div Instrumentation Products Division).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-428-9865. Verify interchangeability with system specifications before substitution.
Key specifications for 4-PH-B-C3: Nominal Pipe Size for Which Designed: 0.250 INCHES IN; Connection Style: PLAIN; Drive End Style: HEXAGON; Criticality Code Justification: FEAT. 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.