# NSN 4730-00-278-3683: Elbow, Boss

NSN 4730-00-278-3683 (also written 4730002783683; NIIN 00-278-3683) is an elbow, boss in Federal Supply Class 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. 16 manufacturer part numbers from 13 suppliers are on record. It was last purchased in Aug 2026.

## Identification

- NSN: 4730-00-278-3683 (4730002783683)
- NIIN: 00-278-3683 (002783683)
- Item name: ELBOW,BOSS
- 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 T: handled under qualified products list procedures. (observed 2026-10-28)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| MEDA | MEDIA FOR WHICH DESIGNED | SECOND RESPONSE OXYGEN, GASEOUS |
| CRTL | CRITICALITY CODE JUSTIFICATION | FEAT |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | OVERALL FED SPEC 1ST MATERIAL RESPONSE QQ-A-367,T6 OR FED SPEC 2ND MATERIAL RESPONSE QQ-A-367,T73 |
| MEDA | MEDIA FOR WHICH DESIGNED | FIRST RESPONSE HYDRAULIC FLUID |
| ZZZK | SPECIFICATION/STANDARD DATA | GOVERNMENT STANDARD 88044-AN939 AND GOVERNMENT SPECIFICATION 81349--IL-F-5509 |
| AEHZ | MAXIMUM OPERATING TEMP | FIRST RESPONSE FAHRENHEIT 380.0 |
| AEHZ | MAXIMUM OPERATING TEMP | SECOND RESPONSE FAHRENHEIT -65.0 |
| SFTT | SURFACE TREATMENT | OVERALL ANODIZE |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | OVERALL MIL SPEC SINGLE TREATMENT RESPONSE -IL-A-8625,TYE 2,CLASS 2 |
| AWLS | CONNECTION TYPE | ALL ENDS THREADED INTERNAL BOSS |
| AHNC | CONNECTION STYLE | — |
| AAJD | THREAD CLASS | 3B |
| CQQF | OPERATING PRESSURE | SINGLE RESPONSE POUNDS PER SQUARE INCH (PSI) MAXIMUM 3000.0 |
| FEAT | SPECIAL FEATURES | WEAPON SYSTEM ESSENTIAL |
| AHSJ | LEG LENGTH | ALL ENDS INCHES MINIMUM 0.812 AND INCHES MAXIMUM 0.830 |
| CRFY | FLOW ANGLE | DEGREES 90.0 |
| MATT | MATERIAL | OVERALL ALUMINUM ALLOY 2014 OR ALUMINUM ALLOY 7075 |
| CQJX | NOMINAL THREAD SIZE | ALL ENDS INCHES 0.562 |
| THSD | THREAD SERIES DESIGNATOR | ALL ENDS UNIFIED NATIONAL JOINT FINE (UNJF) |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 7145696 | 19204 | ARMY, UNITED STATES DEPARTMENT OF THE DBA ROCK ISLAND ARSENAL JMTC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| AN927-6D | 88044 | AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| AN927D6 | 88044 | AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| AN939D6 | 00624 | EATON AEROQUIP LLC DBA JACKSON NORTH 1 DIV FLUID AND ELECTRICAL DISTRIBUTION | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| AN939D6 | 06581 | ALLAN AIRCRAFT SUPPLY CO., LLC DBA ALLAN AIRCRAFT SUPPLY | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| AN939D6 | 13899 | HYDRO-FITTING MANUFACTURING CORPORATION | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| AN939D6 | 14397 | FABER ENTERPRISES, INC. DIV FABER ENTERPRISE INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| AN939D6 | 14798 | DESIGNED METAL CONNECTIONS INC DBA PERMASWAGE USA DIV PERMASWAGE, A PCC COMPANY | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| AN939D6 | 30974 | AEROFIT, LLC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| AN939D6 | 71563 | COLLINS ENGINEERING CORP | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| AN939D6 | 88044 | AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| AN939D6 | R1120 | SATAIR A/S | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| AS5190W06 | 0U583 | SAE INTERNATIONAL DBA SAE INTERNATIONAL | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| AS5190W06 | 81343 | SOCIETY OF AUTOMOTIVE ENGINEERS INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| MIL-F-5509 | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| SAE-AS4875 | 0U583 | SAE INTERNATIONAL DBA SAE INTERNATIONAL | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-08-28 | [SPE7M024V1794](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4730002783683) | ELBOW, BOSS | — | $13,808.64 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=4730002783683&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4730002783683
- 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.

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