The Plate,orifice,fluid, cataloged under National Stock Number 4730-01-656-1542, 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 Oshkosh Defense Llc. Government technical data includes 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-656-1542 |
| Primary Part Number | 2030880-1620 |
| Item Name | Plate,orifice,fluid |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Oshkosh Defense Llc |
| Status | ACTIVE |
| Outside Diameter | 2.845 INCHES MINIMUM AND 2.905 INCHES MAXIMUM IN |
| Shape | ROUND |
| Inside Diameter | 1.620 INCHES NOMINAL IN |
| Material | COPPER ALLOY |
| 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 |
|---|---|
| 2030880-1620 PRIMARY | Oshkosh Defense Llc (USA) |
| Reference | Meaning |
|---|---|
| 2030880 | D/9 Drawing number reference only Oshkosh Defense Llc |
NSN 4730-01-656-1542 is a Plate,orifice,fluid, manufactured by Oshkosh Defense Llc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-656-1542 has 1 manufacturer part number on file: 2030880-1620 (Oshkosh Defense Llc).
2 possible matches (shared part number, not a government interchangeability claim): 4730-01-660-9224, 4730-01-660-9232. Verify interchangeability with system specifications before substitution.
Key specifications for 2030880-1620: Outside Diameter: 2.845 INCHES MINIMUM AND 2.905 INCHES MAXIMUM IN; Shape: ROUND; Inside Diameter: 1.620 INCHES NOMINAL IN; Part Name Assigned by Controlling Agency: ORIFICE BLANK. 4 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.