# NSN 5310-01-125-1231: Washer, Shouldered And Recessed

NSN 5310-01-125-1231 (also written 5310011251231; NIIN 01-125-1231) is a washer, shouldered and recessed in Federal Supply Class 5310, Nuts and Washers. 1 manufacturer part number from 1 supplier is on record. The government has 1 open solicitation for it.

## Identification

- NSN: 5310-01-125-1231 (5310011251231)
- NIIN: 01-125-1231 (011251231)
- Item name: WASHER,SHOULDERED AND RECESSED
- Federal Supply Class: [FSC 5310 Nuts and Washers](https://nsnexplorer.com/fsc/5310/)
- Federal Supply Group: [FSG 53](https://nsnexplorer.com/group/53/)
- Acquisition method suffix code: AMSC P: the government does not own the rights to the data needed for more sources. (observed 2026-10-10)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AAUB | HOLE DIAMETER | INCHES MINIMUM 1.1885 AND INCHES MAXIMUM 1.1890 |
| AAVH | SHOULDER DIAMETER | INCHES MINIMUM 1.3132 AND INCHES MAXIMUM 1.3137 |
| ABKV | OUTSIDE DIAMETER | INCHES NOMINAL 1.625 |
| ABMD | RECESS DIAMETER | INCHES NOMINAL 1.250 |
| ABMG | SHOULDER HEIGHT | INCHES NOMINAL 0.190 |
| ABPX | MATERIAL THICKNESS | INCHES MINIMUM 0.060 AND INCHES MAXIMUM 0.062 |
| CSTM | RECESS ANGLE | DEGREES NOMINAL 90.0 |
| FEAT | SPECIAL FEATURES | CHAMFER OUTSIDE EDGE OF BOSS 0.020 IN.,30 DEG |
| MATT | MATERIAL | OVERALL COPPER ALLOY 172 |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | OVERALL FED SPEC SINGLE MATERIAL RESPONSE QQ-C-530,TE-ER A |
| STYL | STYLE DESIGNATOR | — |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 65122-11229-104 | 78286 | SIKORSKY AIRCRAFT CORPORATION DBA SIKORSKY AIRCRAFT CORP | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Open solicitations

| Solicitation | Quantity | Closes | Link |
| --- | --- | --- | --- |
| SPE4A6-27-T-0806 | 8 | 2026-10-20 | [DIBBS](https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5310011251231&category=nsn) |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5310011251231&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310011251231
- AMSC record: https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/
- 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/5310-01-125-1231/
JSON: https://nsnexplorer.com/api/nsn/5310-01-125-1231.json