# NSN 5310-00-639-4037: Washer, Key

NSN 5310-00-639-4037 (also written 5310006394037; NIIN 00-639-4037) is a washer, key in Federal Supply Class 5310, Nuts and Washers. 6 manufacturer part numbers from 6 suppliers are on record. It was last purchased in Aug 2026.

## Identification

- NSN: 5310-00-639-4037 (5310006394037)
- NIIN: 00-639-4037 (006394037)
- Item name: WASHER,KEY
- 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 2026-10-28)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| ABKV | OUTSIDE DIAMETER | INCHES MINIMUM 1.870 AND INCHES MAXIMUM 1.890 |
| ABKY | EXTERNAL PREBENT KEY LENGTH | INCHES MINIMUM 0.062 AND INCHES MAXIMUM 0.093 |
| CSKN | EXTERNAL PREBENT KEY ANGLE | DEGREES NOMINAL 45.0 |
| CQFM | HARDNESS RATING | ROCKWELL C MINIMUM 32.0 AND ROCKWELL C MAXIMUM 40.0 |
| ABLF | EXTERNAL PREBENT KEY WIDTH | INCHES MINIMUM 0.219 AND INCHES MAXIMUM 0.234 |
| MATT | MATERIAL | OVERALL STEEL |
| STYL | STYLE DESIGNATOR | — |
| AAUB | HOLE DIAMETER | INCHES MINIMUM 0.506 AND INCHES MAXIMUM 0.526 |
| ABPX | MATERIAL THICKNESS | INCHES MINIMUM 0.1544 AND INCHES MAXIMUM 0.1744 |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 515400 | D9182 | ZF INDUSTRIEANTRIEBE WITTEN GMBH | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 5154400 | 24617 | GENERAL MOTORS CORP | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 5154400 | 72582 | ROLLS-ROYCE SOLUTIONS AMERICA INC DBA ROLLS-ROYCE SOLUTIONS AMERICA INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 5154400 | 7X677 | GENERAL MOTORS LLC DBA GENERAL MOTORS LLC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 5154400 | 80072 | H20 TANK INC U S MOTORS DIV | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| PC5154400 | C7432 | POWER COMPONENTS (DEUTSCHLAND) GMBH | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-08-27 | [SPE4A626V238M](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310006394037) | WASHER, KEY | — | $307.44 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5310006394037&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310006394037
- 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/5310-00-639-4037/
JSON: https://nsnexplorer.com/api/nsn/5310-00-639-4037.json