The Plug,drain, cataloged under National Stock Number 4730-01-151-4534, 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 United States Steel Corporation. Government technical data includes 1 specification, 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 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 | 4730-01-151-4534 |
| Primary Part Number | 4MP2145 |
| Item Name | Plug,drain |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | United States Steel Corporation |
| Status | ACTIVE |
| General Characteristics Item Description | AISI 4130 STEEL; 5.625 IN. L; 4.250 IN. DIA; 3.000 IN. ACCROSS FLATS; 1.187 IN.-12 UN-3A THREAD ONE SIDE; 2.750 IN.-8N-3A THREAD ONE END A |
| 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 |
|---|---|
| 4MP2145 PRIMARY | United States Steel Corporation (USA) |
NSN 4730-01-151-4534 is a Plug,drain, manufactured by United States Steel Corporation, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-151-4534 has 1 manufacturer part number on file: 4MP2145 (United States Steel Corporation).
1 possible match (shared part number, not a government interchangeability claim): 5365-01-381-6301. Verify interchangeability with system specifications before substitution.
Key specifications for 4MP2145: General Characteristics Item Description: AISI 4130 STEEL; 5.625 IN. L; 4.250 IN. DIA; 3.000 IN. ACCROSS FLATS; 1.187 IN.-12 UN-3A THREAD ONE SIDE; 2.750 IN.-8N-3A THREAD ONE END A. 1 specification is 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.