# NSN 5310-00-209-2870: Washer, Recessed

NSN 5310-00-209-2870 (also written 5310002092870; NIIN 00-209-2870) is a washer, recessed in Federal Supply Class 5310, Nuts and Washers. 1 manufacturer part number from 1 supplier is on record. It was last purchased in Sep 2026.

## Identification

- NSN: 5310-00-209-2870 (5310002092870)
- NIIN: 00-209-2870 (002092870)
- 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 Q: the government lacks adequate data or rights, but breakout to competition is expected. (observed 2026-10-23)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AAUB | HOLE DIAMETER | INCHES MINIMUM 1.385 AND INCHES MAXIMUM 1.400 |
| ABKV | OUTSIDE DIAMETER | INCHES NOMINAL 1.875 |
| ABMD | RECESS DIAMETER | INCHES MINIMUM 1.556 AND INCHES MAXIMUM 1.572 |
| ABPX | MATERIAL THICKNESS | INCHES MINIMUM 0.084 AND INCHES MAXIMUM 0.104 |
| CSTM | RECESS ANGLE | DEGREES NOMINAL 90.0 |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | OVERALL MIL SPEC SINGLE MATERIAL RESPONSE -IL-S-6050 |
| STYL | STYLE DESIGNATOR | — |
| MATT | MATERIAL | OVERALL STEEL COMP 8630 |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 342983 | 98897 | LOCKHEED MARTIN CORP DIV LOCKHEED MARTIN AERONAUTICS COMPANY | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-09-15 | [SPE4A520DP002/SPE4AX26F464U](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310002092870) | WASHER, RECESSED | DERCO AEROSPACE, INC. DBA DERCO AEROSPACE, INC. A LOCKHEED MARTIN COMPANY | $9.00 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5310002092870&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310002092870
- 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/5310-00-209-2870/
JSON: https://nsnexplorer.com/api/nsn/5310-00-209-2870.json