# NSN 5310-01-170-8539: Washer, Flat

NSN 5310-01-170-8539 (also written 5310011708539; NIIN 01-170-8539) is a washer, flat in Federal Supply Class 5310, Nuts and Washers. 3 manufacturer part numbers from 2 suppliers are on record. It was last purchased in Oct 2026.

## Identification

- NSN: 5310-01-170-8539 (5310011708539)
- NIIN: 01-170-8539 (011708539)
- 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 L: annual buy value is below the screening threshold. (observed 2026-10-10)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AAGR | CROSS-SECTIONAL SHAPE STYLE | — |
| AAUB | HOLE DIAMETER | INCHES MINIMUM 1.276 AND INCHES MAXIMUM 1.286 |
| ABMW | PERIPHERAL SHAPE STYLE | — |
| ABMX | CENTER HOLE SHAPE STYLE | — |
| ABNM | THICKNESS | INCHES MINIMUM 0.124 AND INCHES MAXIMUM 0.126 |
| ADAV | OVERALL DIAMETER | INCHES MINIMUM 1.735 AND INCHES MAXIMUM 1.750 |
| CQFM | HARDNESS RATING | ROCKWELL C NOMINAL 50.0 |
| MATT | MATERIAL | OVERALL STEEL |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 200001 | 12361 | GROVE U.S. LLC DBA GROVE US LLC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| WLM200001 | 12361 | GROVE U.S. LLC DBA GROVE US LLC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| WLM200001 | 7M196 | KEYSTONE AUTOMOTIVE OPERATIONS INC DBA GROVE NORTH AMERICA | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Price history

Newest first.

| Date | Unit price | Quantity | Supplier | Agency | Source |
| --- | --- | --- | --- | --- | --- |
| 2026-10-06 | $128.97 | 9 | MELTON SALES & SERVICE DIV MELTON INDUSTRIES | — | [record](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310011708539) |
| 2026-09-16 | $128.97 | 24 | MELTON SALES & SERVICE DIV MELTON INDUSTRIES | — | [record](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310011708539) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-10-06 | [SPE4A027P0042](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310011708539) | WASHER, FLAT | — | $1,160.73 |
| 2026-09-16 | [SPE4A626V371E](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310011708539) | WASHER, FLAT | — | $3,095.28 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5310011708539&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310011708539
- 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/5310-01-170-8539/
JSON: https://nsnexplorer.com/api/nsn/5310-01-170-8539.json