# NSN 5310-00-321-9974: Washer, Key

NSN 5310-00-321-9974 (also written 5310003219974; NIIN 00-321-9974) is a washer, key in Federal Supply Class 5310, Nuts and Washers. 7 manufacturer part numbers from 5 suppliers are on record. It was last purchased in Sep 2026.

## Identification

- NSN: 5310-00-321-9974 (5310003219974)
- NIIN: 00-321-9974 (003219974)
- 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 L: annual buy value is below the screening threshold. (observed 2026-10-10)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| ABLQ | DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY | INCHES NOMINAL 3.338 |
| MATT | MATERIAL | OVERALL STEEL |
| ABPX | MATERIAL THICKNESS | INCHES MINIMUM 0.249 AND INCHES MAXIMUM 0.279 |
| AAUB | HOLE DIAMETER | INCHES MINIMUM 3.255 AND INCHES MAXIMUM 3.265 |
| STYL | STYLE DESIGNATOR | — |
| ABLJ | INTERNAL STRAIGHT KEY WIDTH | INCHES NOMINAL 0.375 |
| ABKV | OUTSIDE DIAMETER | INCHES NOMINAL 4.500 |
| ABMR | INTERNAL KEY QUANTITY | 1 |
| FEAT | SPECIAL FEATURES | SIXTEEN 0.328 IN. DIA HOLES SPACED EQUALLY ON 3.813 IN. DIA CENTER LINE |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 1229U1009 | 3D6E9 | MERITOR INDUSTRIAL PRODUCTS, LLC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 1229U1009 | 78500 | MERITOR HEAVY VEHICLE SYSTEMS, LLC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 1229U1009 | K4998 | MERITOR HEAVY VEHICLE SYSTEMS LTD | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 2568P11 | 27618 | TAYLOR MACHINE WORKS INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 69305R1 | 89346 | NAVISTAR INTL CORP TRUCK BR OHIO PLANT | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| R002304 | 3D6E9 | MERITOR INDUSTRIAL PRODUCTS, LLC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| R002304 | 78500 | MERITOR HEAVY VEHICLE SYSTEMS, LLC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-09-24 | [SPE4A626D5363/SPE4A626F514B](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310003219974) | WASHER, KEY | — | $707.52 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5310003219974&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310003219974
- 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/5310-00-321-9974/
JSON: https://nsnexplorer.com/api/nsn/5310-00-321-9974.json