# NSN 5310-12-157-4397: Washer, Flat

NSN 5310-12-157-4397 (also written 5310121574397; NIIN 12-157-4397) is a washer, flat in Federal Supply Class 5310, Nuts and Washers. It was last purchased in Sep 2026.

## Identification

- NSN: 5310-12-157-4397 (5310121574397)
- NIIN: 12-157-4397 (121574397)
- 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/)

## Price history

Newest first.

| Date | Unit price | Quantity | Supplier | Agency | Source |
| --- | --- | --- | --- | --- | --- |
| 2026-09-08 | $0.35 | 1,250 | KAREN CARLISLE DBA B & K AEROSPACE | — | [record](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310121574397) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-09-08 | [SPE4A626V350W](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310121574397) | WASHER, FLAT | KAREN CARLISLE DBA B & K AEROSPACE | $437.50 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5310121574397&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310121574397
- 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/5310-12-157-4397/
JSON: https://nsnexplorer.com/api/nsn/5310-12-157-4397.json