# NSN 5310-01-643-0973: Washer, Flat

NSN 5310-01-643-0973 (also written 5310016430973; NIIN 01-643-0973) is a washer, flat in Federal Supply Class 5310, Nuts and Washers. 1 manufacturer part number from 1 supplier is on record. No purchases are on record yet.

## Identification

- NSN: 5310-01-643-0973 (5310016430973)
- NIIN: 01-643-0973 (016430973)
- 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 C: needs engineering source approval; other sources must qualify first. (observed 2026-10-10)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| HUES | COLOR | OVERALL BLACK |
| FEAT | SPECIAL FEATURES | FINISH MAGNI 575 |
| AGAV | END ITEM IDENTIFICATION | M-ATV; M-ATV; M-ATV UI |
| ABMX | CENTER HOLE SHAPE STYLE | — |
| ABNM | THICKNESS | INCHES MINIMUM 0.122 AND INCHES MAXIMUM 0.138 |
| ADAV | OVERALL DIAMETER | INCHES MINIMUM 1.125 AND INCHES MAXIMUM 1.135 |
| AAGR | CROSS-SECTIONAL SHAPE STYLE | — |
| AAUB | HOLE DIAMETER | INCHES MINIMUM 0.405 AND INCHES MAXIMUM 0.415 |
| ABMW | PERIPHERAL SHAPE STYLE | — |
| SFTT | SURFACE TREATMENT | OVERALL ZINC |
| PRPY | PROPRIETARY CHARACTERISTICS | NPAC |
| MATT | MATERIAL | OVERALL STEEL |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 4116768 | 75Q65 | OSHKOSH DEFENSE LLC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5310016430973&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310016430973
- 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/5310-01-643-0973/
JSON: https://nsnexplorer.com/api/nsn/5310-01-643-0973.json