The Plug,pipe, cataloged under National Stock Number 4730-01-230-6653, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 7 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 4730-01-230-6653 |
| Item Name | Plug,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Criticality Code Justification | ZZZX |
| Thread Direction | RIGHT-HAND INTERNAL |
| Nominal Thread Size | 0.437 INCHES INTERNAL IN |
| Departure From Cited Designator | QUALITY CONTROL IN ACCORDANCE WITH NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS |
| Nondefinitive Spec/std Data | 1 FORM AND B CLASS |
| Material | NICKEL ALLOY OVERALL |
| Thread Series Designator | UNF INTERNAL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Reference | Meaning |
|---|---|
| MS-18229-4NC | 5/1 Secondary reference U.S. Government activity |
| MS-18229 | 4/1 Identification reference U.S. Government activity |
| MS-18229-4NCLI | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| MS-18229L1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
NSN 4730-01-230-6653 is a Plug,pipe, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 4730-01-234-5649, 4730-01-235-0514. Verify interchangeability with system specifications before substitution.
Key specifications for 4730-01-230-6653: Criticality Code Justification: ZZZX; Thread Direction: RIGHT-HAND INTERNAL; Nominal Thread Size: 0.437 INCHES INTERNAL IN; Departure From Cited Designator: QUALITY CONTROL IN ACCORDANCE WITH NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS. 7 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.