# NSN 4730-01-173-4302: Restrictor Unit, Fluid Flow

NSN 4730-01-173-4302 (also written 4730011734302; NIIN 01-173-4302) is a restrictor unit, fluid flow in Federal Supply Class 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. 5 manufacturer part numbers from 3 suppliers are on record. It was last purchased in Sep 2026.

## Identification

- NSN: 4730-01-173-4302 (4730011734302)
- NIIN: 01-173-4302 (011734302)
- Item name: RESTRICTOR UNIT,FLUID FLOW
- Federal Supply Class: [FSC 4730 Hose, Pipe, Tube, Lubrication, and Railing Fittings](https://nsnexplorer.com/fsc/4730/)
- Federal Supply Group: [FSG 47](https://nsnexplorer.com/group/47/)
- Acquisition method suffix code: AMSC L: annual buy value is below the screening threshold. (observed 2026-10-10)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AAJD | THREAD CLASS | 3A |
| AAJF | THREAD DIRECTION | SECOND CONNECTION RIGHT-HAND |
| AAJF | THREAD DIRECTION | FIRST CONNECTION RIGHT-HAND |
| ABHP | OVERALL LENGTH | INCHES MINIMUM 0.912 AND INCHES MAXIMUM 0.942 |
| ABVK | THREAD SIZE DESIGNATOR | 7/16-20 |
| ABVK | THREAD SIZE DESIGNATOR | 9/16-20 |
| AGAV | END ITEM IDENTIFICATION | 55N AIRCRAFT, HARRIER AV-8B |
| APGF | DESIGN TYPE | STRAIGHT |
| AWZY | END CONNECTION TYPE | FIRST CONNECTION THREADED MALE TUBE |
| AWZY | END CONNECTION TYPE | SECOND CONNECTION THREADED MALE GASKET SEAL |
| AXAL | END CONNECTION SIMILARITY | NOT IDENTICAL |
| BGST | PRESSURE RATING | POUNDS PER SQUARE INCH (PSI) NOMINAL 3000.0 |
| BZRR | THREAD SERIES | SECOND CONNECTION UNF |
| BZRR | THREAD SERIES | FIRST CONNECTION UNS |
| CWRR | FLOW RATE AND FLUID TYPE | GALLONS PER MINUTE OIL 0.75 |
| MATT | MATERIAL | SCREENING STEEL CORROSION RESISTING |
| MATT | MATERIAL | BODY TITANIUM ALLOY UNS R56400 |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | LOCATION NOT OTHERWISE SPECIFIED ASSN STD SINGLE MATERIAL RESPONSE A-S 4965 |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 6F3308 | 99240 | CRISSAIR INC DIV ESCO TECHNOLOGIES | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 7M572 | 76301 | THE BOEING COMPANY DIV DEFENSE | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 7M572-2 | 76301 | THE BOEING COMPANY DIV DEFENSE | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| JETX0504450A | 92555 | THE LEE CO DBA THE LEE CO | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| JETX0504450AA | 92555 | THE LEE CO DBA THE LEE CO | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-09-28 | [SPE7M326P1717](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4730011734302) | RESTRICTOR UNIT, FLU | — | $5,895.00 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=4730011734302&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4730011734302
- AMSC record: https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/
- USAspending contract actions (each award above links to its record)
- All data is public U.S. government data; every row above links to its source record where one exists.

Canonical page: https://nsnexplorer.com/nsn/4730-01-173-4302/
JSON: https://nsnexplorer.com/api/nsn/4730-01-173-4302.json