The Check Plug, cataloged under National Stock Number 4730-01-054-1864, 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 Mobile Drilling Company Inc Dba Foremost-Mobile. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Check Plug |
| FSC / FSG | 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings (FSG 47) |
| Manufacturers | Mobile Drilling Company Inc Dba Foremost-Mobile (CAGE 02248) |
| Parameter | Value |
|---|---|
| NSN | 4730-01-054-1864 |
| Primary Part Number | 052156 |
| Item Name | Check Plug |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Mobile Drilling Company Inc Dba Foremost-Mobile |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 052156 | Mobile Drilling Company Inc Dba Foremost-Mobile (USA) |
| Reference | Meaning |
|---|---|
| 7790-001 | 3/9 Design control — primary reference Parker Hannifin Corporation Dba Gresen Hydraulics Div Hydraulic Valve Division |
| 1728 | 5/9 Secondary reference Parker Hannifin Corporation Dba Gresen Hydraulics Div Hydraulic Valve Division |
NSN 4730-01-054-1864 is a Check Plug, manufactured by Mobile Drilling Company Inc Dba Foremost-Mobile, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-054-1864 has 1 manufacturer part number on file: 052156 (Mobile Drilling Company Inc Dba Foremost-Mobile).
2 possible matches (shared part number, not a government interchangeability claim): 6130-01-315-8575, 7025-01-727-3423. Verify interchangeability with system specifications before substitution.
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.