The Restrictor,fluid Flow, cataloged under National Stock Number 4730-01-370-6176, 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 Allan Aircraft Supply Co., Llc Dba Allan Aircraft Supply. Government technical data includes 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-370-6176 |
| Primary Part Number | AA1868-4K-.005 |
| Item Name | Restrictor,fluid Flow |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Allan Aircraft Supply Co., Llc Dba Allan Aircraft Supply |
| Status | ACTIVE |
| Length | 1.219 INCHES NOMINAL IN |
| Thread Provision | THREADED LOCATION NOT OTHERWISE SPECIFIED |
| Design Type | TUBULAR |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) LOCATION NOT OTHERWISE SPECIFIED |
| Outside Diameter | 0.683 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED |
| Thread Size Designator | 7/16-20 LOCATION NOT OTHERWISE SPECIFIED |
| Surface Treatment | PASSIVATE |
| Material | STEEL COMP 316 |
| Orifice Diameter | 0.005 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 |
|---|---|
| AA1868-4K-.005 PRIMARY | Allan Aircraft Supply Co., Llc Dba Allan Aircraft Supply (USA) |
| Reference | Meaning |
|---|---|
| AA1868 | D/9 Drawing number reference only Allan Aircraft Supply Co., Llc Dba Allan Aircraft Supply |
NSN 4730-01-370-6176 is a Restrictor,fluid Flow, manufactured by Allan Aircraft Supply Co., Llc Dba Allan Aircraft Supply, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-370-6176 has 1 manufacturer part number on file: AA1868-4K-.005 (Allan Aircraft Supply Co., Llc Dba Allan Aircraft Supply).
Key specifications for AA1868-4K-.005: Length: 1.219 INCHES NOMINAL IN; Thread Provision: THREADED LOCATION NOT OTHERWISE SPECIFIED; Design Type: TUBULAR; Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF) LOCATION NOT OTHERWISE SPECIFIED. 10 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.