# NSN 5310-01-043-9277: Washer, Recessed

NSN 5310-01-043-9277 (also written 5310010439277; NIIN 01-043-9277) is a washer, recessed in Federal Supply Class 5310, Nuts and Washers. 2 manufacturer part numbers from 2 suppliers are on record. It was last purchased in Sep 2026.

## Identification

- NSN: 5310-01-043-9277 (5310010439277)
- NIIN: 01-043-9277 (010439277)
- Item name: WASHER,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 G: the government has a complete data package and the rights to use it. (observed 2026-10-10)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AAUB | HOLE DIAMETER | INCHES MINIMUM 0.377 AND INCHES MAXIMUM 0.382 |
| ABKV | OUTSIDE DIAMETER | INCHES NOMINAL 0.875 |
| ABPX | MATERIAL THICKNESS | INCHES NOMINAL 0.190 |
| CQJW | TOP RECESS DIAMETER | INCHES MINIMUM 0.498 AND INCHES MAXIMUM 0.508 |
| CRKG | BOTTOM RECESS ANGLE | DEGREES NOMINAL 90.0 |
| CRSD | TOP RECESS ANGLE | DEGREES NOMINAL 90.0 |
| CSML | BOTTOM RECESS DIAMETER | INCHES MINIMUM 0.498 AND INCHES MAXIMUM 0.508 |
| MATT | MATERIAL | OVERALL STEEL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | OVERALL MIL SPEC SINGLE MATERIAL RESPONSE -IL-S-6758 |
| STYL | STYLE DESIGNATOR | — |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 16M228-9 | 81755 | LOCKHEED MARTIN CORPORATION DIV LOCKHEED MARTIN AERONAUTICS COMPANY | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 5310PL0739922 | 9009H | JEDNOLITY INDEKS MATERIALOWY - UNIFORM MATERIAL INDEX | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-09-29 | [SPE4A625P0N42](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310010439277) | WASHER, RECESSED | AMERICAN DEFENSE COMPONENTS, LLC | $4,213.65 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5310010439277&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310010439277
- 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/5310-01-043-9277/
JSON: https://nsnexplorer.com/api/nsn/5310-01-043-9277.json