The Restrictor,fluid Flow, cataloged under National Stock Number 4730-01-644-0122, 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 Naval Inventory Control Point Mechanicsburg. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Item Name | Restrictor,fluid Flow |
| FSC / FSG | 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings (FSG 47) |
| Manufacturers | Naval Inventory Control Point Mechanicsburg (CAGE 03950) |
| Parameter | Value |
|---|---|
| NSN | 4730-01-644-0122 |
| Primary Part Number | 801-6640811 ASSY 212A-6L1 |
| Item Name | Restrictor,fluid Flow |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 801-6640811 ASSY 212A-6L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| H721-1202-F10L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 2633-561-01 ASSY 212A-6L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 524-6985906-F10L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| H721-1202-F10 | 5/1 Secondary reference U.S. Government activity |
| 2633-561-01 ASSY 212A-6 | 5/1 Secondary reference U.S. Government activity |
| 524-6985906-F10 | 3/1 Design control — primary reference Naval Sea Systems Command |
| 801-6640811 ASSY 212A-6 | 5/1 Secondary reference Naval Sea Systems Command |
NSN 4730-01-644-0122 is a Restrictor,fluid Flow, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-644-0122 has 4 manufacturer part numbers on file: 801-6640811 ASSY 212A-6L1 (Naval Inventory Control Point Mechanicsburg), H721-1202-F10L1 (Naval Inventory Control Point Mechanicsburg), 2633-561-01 ASSY 212A-6L1 (Naval Inventory Control Point Mechanicsburg), 524-6985906-F10L1 (Naval Inventory Control Point Mechanicsburg).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-657-1569. 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.
NSN 4730-01-644-0122 has DEMIL Code D. Demilitarization may be required before disposal or transfer to non-military entities.
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.