# NSN 5310-01-053-3983: Washer, Key

NSN 5310-01-053-3983 (also written 5310010533983; NIIN 01-053-3983) is a washer, key in Federal Supply Class 5310, Nuts and Washers. 2 manufacturer part numbers from 2 suppliers are on record. No purchases are on record yet.

## Identification

- NSN: 5310-01-053-3983 (5310010533983)
- NIIN: 01-053-3983 (010533983)
- 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 R: the government owns neither the data nor the rights, and obtaining them is judged uneconomical. (observed 2026-10-10)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AAUB | HOLE DIAMETER | INCHES MINIMUM 0.375 AND INCHES MAXIMUM 0.380 |
| ABKV | OUTSIDE DIAMETER | INCHES NOMINAL 0.625 |
| ABKY | EXTERNAL PREBENT KEY LENGTH | INCHES NOMINAL 0.060 |
| ABLK | INTERNAL PREBENT KEY WIDTH | INCHES NOMINAL 0.065 |
| ABPX | MATERIAL THICKNESS | INCHES NOMINAL 0.032 |
| CQFM | HARDNESS RATING | ROCKWELL B MINIMUM 57.0 AND ROCKWELL B MAXIMUM 77.0 |
| MATT | MATERIAL | OVERALL COPPER ALLOY |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | OVERALL FED SPEC SINGLE MATERIAL RESPONSE QQ-B-613,FOR- SHEET,1 TO 2 HARD |
| SFTT | SURFACE TREATMENT | OVERALL NICKEL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | OVERALL FED SPEC SINGLE TREATMENT RESPONSE QQ-N-290,CLASS 2 |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 2018-29 | 91812 | JANCO CORPORATION DBA JANCO CORP DIV MASON CONTROLS | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 4M102-6 | 76301 | THE BOEING COMPANY DIV DEFENSE | [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=5310010533983&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310010533983
- 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/5310-01-053-3983/
JSON: https://nsnexplorer.com/api/nsn/5310-01-053-3983.json