# NSN 5310-01-340-4646: Washer, Lock

NSN 5310-01-340-4646 (also written 5310013404646; NIIN 01-340-4646) is a washer, lock in Federal Supply Class 5310, Nuts and Washers. 2 manufacturer part numbers from 2 suppliers are on record. It was last purchased in Aug 2026.

## Identification

- NSN: 5310-01-340-4646 (5310013404646)
- NIIN: 01-340-4646 (013404646)
- Item name: WASHER,LOCK
- 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 D: the data needed to compete the part is unavailable or cannot be obtained economically. (observed 2026-11-02)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AAUB | HOLE DIAMETER | INCHES MINIMUM 1.834 AND INCHES MAXIMUM 1.880 |
| ABKV | OUTSIDE DIAMETER | INCHES MINIMUM 2.970 AND INCHES MAXIMUM 2.980 |
| ABPX | MATERIAL THICKNESS | INCHES NOMINAL 0.045 |
| FEAT | SPECIAL FEATURES | CHROME-VANADIUM ALLOY |
| STYL | STYLE DESIGNATOR | — |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 5905976 | 99167 | HAMILTON SUNDSTRAND CORPORATION | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 99001100 | 92830 | BARNES GROUP INC. DBA ASSOCIATED SPRING DIV ASSOCIATED SPRING BRISTOL | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-08-20 | [SPE4AX20D9410/SPE4A526F8857](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310013404646) | WASHER, LOCK | HAMILTON SUNDSTRAND CORPORATION DBA COLLINS AEROSPACE | $6,869.85 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5310013404646&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310013404646
- 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/5310-01-340-4646/
JSON: https://nsnexplorer.com/api/nsn/5310-01-340-4646.json