# NSN 5985-01-178-0273: Flange, Waveguide

NSN 5985-01-178-0273 (also written 5985011780273; NIIN 01-178-0273) is a flange, waveguide in Federal Supply Class 5985, Antennas, Waveguides, and Related Equipment. 5 manufacturer part numbers from 5 suppliers are on record. It was last purchased in Sep 2026.

## Identification

- NSN: 5985-01-178-0273 (5985011780273)
- NIIN: 01-178-0273 (011780273)
- Item name: FLANGE,WAVEGUIDE
- Federal Supply Class: [FSC 5985 Antennas, Waveguides, and Related Equipment](https://nsnexplorer.com/fsc/5985/)
- Federal Supply Group: [FSG 59](https://nsnexplorer.com/group/59/)
- Acquisition method suffix code: AMSC C: needs engineering source approval; other sources must qualify first. (observed 2026-10-27)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AAJD | THREAD CLASS | 2B |
| AAJF | THREAD DIRECTION | SINGLE FLANGE FIRST CONNECTION FACILITY RIGHT-HAND |
| AGAV | END ITEM IDENTIFICATION | RADAR SET,AN/TPS-43E |
| AHSX | FLANGE INSIDE WIDTH | SINGLE FLANGE INCHES NOMINAL 4.240 |
| AHSY | FLANGE INSIDE HEIGHT | SINGLE FLANGE INCHES NOMINAL 4.240 |
| AHTC | FLANGE OUTSIDE DIAMETER | SINGLE FLANGE INCHES NOMINAL 5.820 |
| AHTD | FLANGE DEPTH | SINGLE FLANGE INCHES NOMINAL 0.500 |
| AHTN | FLANGE CONNECTING HOLE DIAMETER | SINGLE FLANGE SECOND CONNECTION FACILITY INCHES NOMINAL 0.136 |
| CQJX | NOMINAL THREAD SIZE | SINGLE FLANGE FIRST CONNECTION FACILITY INCHES 0.201 |
| CSQT | FLANGE CONNECTING FACILITY AND QUANTITY | SINGLE FLANGE SECOND CONNECTION FACILITY UNTHREADED HOLE(S) 6 |
| CSQT | FLANGE CONNECTING FACILITY AND QUANTITY | SINGLE FLANGE FIRST CONNECTION FACILITY THREADED HOLE(S) 8 |
| CTCJ | FLANGE STYLE | — |
| FEAT | SPECIAL FEATURES | FLANGE SPLIT IN TWO HALVES |
| MATT | MATERIAL | SINGLE FLANGE STEEL |
| THSD | THREAD SERIES DESIGNATOR | SINGLE FLANGE FIRST CONNECTION FACILITY UNIFIED NATIONAL COARSE (UNC) |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 134C974H01 | 21856 | CENTROID, INC. DBA CENTROID INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 134C974H01 | 28156 | 3M COMPANY DIV HEALTH CARE BUSINESS | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 134C974H01 | 48306 | NORTHROP GRUMMAN SUPPORT SERVICES CORP | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 134C974H01 | 97942 | NORTHROP GRUMMAN SYSTEMS CORPORATION DBA NORTHROP GRUMMAN SYSTEMS CORP | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 225978 | 54647 | MICROTECH INC DBA MICROTECH INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-09-03 | [SPE7M526P3366](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5985011780273) | FLANGE, WAVEGUIDE | FDH DEFENSE AFTERMARKET, LLC | $500.00 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5985011780273&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5985011780273
- 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/5985-01-178-0273/
JSON: https://nsnexplorer.com/api/nsn/5985-01-178-0273.json