The Restrictor Unit,fluid Flow, cataloged under National Stock Number 4730-01-705-3761, 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 2 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | Restrictor Unit,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 | 4730-01-705-3761 |
| Primary Part Number | 801-8617176 ASSY 131AL1 |
| Item Name | Restrictor Unit,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 A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 801-8617176 ASSY 131AL1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 2655-561-02 ASSY 131AL1 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 801-8617176 | D/9 Drawing number reference only Naval Sea Systems Command |
| 801-8617176L1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 2655-561-02 ASSY 131A | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 801-8617176 ASSY 131A | 3/1 Design control — primary reference Naval Sea Systems Command |
NSN 4730-01-705-3761 is a Restrictor Unit,fluid Flow, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-705-3761 has 2 manufacturer part numbers on file: 801-8617176 ASSY 131AL1 (Naval Inventory Control Point Mechanicsburg), 2655-561-02 ASSY 131AL1 (Naval Inventory Control Point Mechanicsburg).
2 possible matches (shared part number, not a government interchangeability claim): 4730-01-705-6546, 4730-01-705-9288. 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.