The Restrictor Unit,fluid Flow, cataloged under National Stock Number 4730-01-659-7893, is classified within Federal Supply Class 4730 (No Item Name Available) of the Pipe, Tubing, Hose, and Fittings group. The primary manufacturer of record is Dwyer Instruments Inc. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-659-7893 |
| Primary Part Number | A-254 |
| Item Name | Restrictor Unit,fluid Flow |
| FSC / FSG | 4730 / 47 — No Item Name Available |
| Manufacturer | Dwyer Instruments Inc |
| Status | ACTIVE |
| Mounting Hole Diameter | 0.25 INCHES NOMINAL IN |
| Width Across Flats | 25.0 MILLIMETERS NOMINAL MM |
| Mounting Hole Quantity | 1 |
| Design Type | STRAIGHT |
| Operating Temp Range | -4.0 TO 302.0 FAHRENHEIT DEGF |
| Port Quantity | 1 |
| Material | COPPER ALLOY OVERALL |
| Thread Series | NPT ALL CONNECTIONS |
| End Connection Type | THREADED FEMALE SECOND CONNECTION |
| End Connection Similarity | NOT IDENTICAL |
| End Connection Type | THREADED MALE FIRST CONNECTION |
| Pressure Rating | 5690.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| A-254 PRIMARY | Dwyer Instruments Inc (USA) |
NSN 4730-01-659-7893 is a Restrictor Unit,fluid Flow, manufactured by Dwyer Instruments Inc, classified under FSC 4730 (No Item Name Available). Status: active.
NSN 4730-01-659-7893 has 1 cross-referenced part number: A-254 (Dwyer Instruments Inc).
There are 2 known substitutes for 4730-01-659-7893: 5915-00-208-4457, 1620-00-485-7640. Verify interchangeability with system specifications before substitution.
Key specifications for A-254: Mounting Hole Diameter: 0.25 INCHES NOMINAL IN; Overall Length: 55.0 MILLIMETERS NOMINAL MM; End Item Identification: 3655015452483; Width Across Flats: 25.0 MILLIMETERS NOMINAL MM. 16 total characteristics are documented in the Federal Logistics Information System.