The Restrictor Unit,fluid Flow, cataloged under National Stock Number 4730-00-977-3075, 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 Tactair Fluid Controls Inc. Government technical data includes 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4730-00-977-3075 |
| Primary Part Number | HP610503-2C1 |
| Item Name | Restrictor Unit,fluid Flow |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Tactair Fluid Controls Inc |
| Status | ACTIVE |
| Flow Rate and Fluid Type | 0.12 GALLONS PER MINUTE OIL |
| Pressure Rating | 1500.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS |
| Strainer Type and Quantity | 1 SCREEN |
| Design Type | STRAIGHT |
| End Connection Type | FLARE TUBE ALL CONNECTIONS |
| Valve Size | 2.348 INCHES IN |
| Surface Treatment | ANODIZE BODY |
| Operating Temp Range | -95.0 TO 105.0 FAHRENHEIT DEGF |
| Unable to Decode | UNABLE TO DECODE |
| Material | ALUMINUM BODY |
| Material | STEEL SCREENING |
| End Connection Similarity | NOT IDENTICAL |
| Angle Between Connections | 45.0 DEGREES NOMINAL ALL CONNECTIONS |
| 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 |
|---|---|
| HP610503-2C1 PRIMARY | Tactair Fluid Controls Inc (USA) |
| Reference | Meaning |
|---|---|
| HP610503-2C1 | 5/9 Secondary reference U.S. Government activity |
NSN 4730-00-977-3075 is a Restrictor Unit,fluid Flow, manufactured by Tactair Fluid Controls Inc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-977-3075 has 1 manufacturer part number on file: HP610503-2C1 (Tactair Fluid Controls Inc).
Key specifications for HP610503-2C1: Flow Rate and Fluid Type: 0.12 GALLONS PER MINUTE OIL; Pressure Rating: 1500.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS; Strainer Type and Quantity: 1 SCREEN; Design Type: STRAIGHT. 13 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.