The Restrictor,fluid Flow, cataloged under National Stock Number 4730-01-644-3845, 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 Mcmaster-Carr Supply Co. Government technical data includes 6 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-644-3845 |
| Primary Part Number | 85985K17 |
| Item Name | Restrictor,fluid Flow |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Mcmaster-Carr Supply Co |
| Status | ACTIVE |
| Length | 0.406 INCHES NOMINAL IN |
| Thread Provision | UNTHREADED SINGLE PROVISION |
| Hose/tube Size for Which Designed | HOSE ID 0.063 INCHES IN |
| Outside Diameter | 0.688 INCHES NOMINAL IN |
| Material | PLASTIC POLYAMIDE NYLON |
| Orifice Diameter | 0.563 INCHES NOMINAL IN |
| 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 |
|---|---|
| 85985K17 | Mcmaster-Carr Supply Co (USA) |
| Reference | Meaning |
|---|---|
| 9-2-9330 | D/9 Drawing number reference only U.S. Government activity |
| 9-2-9330-2 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4730-01-644-3845 is a Restrictor,fluid Flow, manufactured by Mcmaster-Carr Supply Co, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-644-3845 has 1 manufacturer part number on file: 85985K17 (Mcmaster-Carr Supply Co).
Key specifications for 85985K17: Length: 0.406 INCHES NOMINAL IN; Thread Provision: UNTHREADED SINGLE PROVISION; Hose/tube Size for Which Designed: HOSE ID 0.063 INCHES IN; Outside Diameter: 0.688 INCHES NOMINAL IN. 6 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.