# NSN 5310-00-187-3661: Washer, Flat

NSN 5310-00-187-3661 (also written 5310001873661; NIIN 00-187-3661) is a washer, flat in Federal Supply Class 5310, Nuts and Washers. 1 manufacturer part number from 1 supplier is on record. It was last purchased in Oct 2026.

## Identification

- NSN: 5310-00-187-3661 (5310001873661)
- NIIN: 00-187-3661 (001873661)
- Item name: WASHER,FLAT
- 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 2026-11-01)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AAUB | HOLE DIAMETER | INCHES NOMINAL 1.062 |
| AAGR | CROSS-SECTIONAL SHAPE STYLE | — |
| ABMX | CENTER HOLE SHAPE STYLE | — |
| MATT | MATERIAL | OVERALL IRON |
| ABNM | THICKNESS | INCHES NOMINAL 0.031 |
| ADAV | OVERALL DIAMETER | INCHES NOMINAL 1.500 |
| CQFM | HARDNESS RATING | ROCKWELL B MAXIMUM 48.0 |
| ABMW | PERIPHERAL SHAPE STYLE | — |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| FF-S-92TYAGR1CLA | 81348 | FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-10-28 | [SPE4A627P3978](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310001873661) | WASHER, FLAT | J. T. D. STAMPING CO INC | $1,415.00 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5310001873661&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310001873661
- 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/5310-00-187-3661/
JSON: https://nsnexplorer.com/api/nsn/5310-00-187-3661.json