# NSN 5310-00-181-6824: Nut, Self-Locking, Extended Washer

NSN 5310-00-181-6824 (also written 5310001816824; NIIN 00-181-6824) is a nut, self-locking, extended washer in Federal Supply Class 5310, Nuts and Washers. 2 manufacturer part numbers from 2 suppliers are on record. It was last purchased in Oct 2026.

## Identification

- NSN: 5310-00-181-6824 (5310001816824)
- NIIN: 00-181-6824 (001816824)
- Item name: NUT,SELF-LOCKING,EXTENDED WASHER
- 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 B: must be bought from the sources named on a source control or selected item drawing. (observed 2026-10-14)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| CQJX | NOMINAL THREAD SIZE | INCHES 0.312 |
| ABKW | OVERALL HEIGHT | INCHES MINIMUM 0.350 AND INCHES MAXIMUM 0.360 |
| ASDB | WIDTH ACROSS FLATS | INCHES MINIMUM 0.367 AND INCHES MAXIMUM 0.376 |
| PRMT | PRECIOUS MATERIAL | SILVER |
| SFTT | SURFACE TREATMENT | OVERALL SILVER |
| MATT | MATERIAL | OVERALL IRON ALLOY 660 |
| BZRR | THREAD SERIES | UNIFIED NATIONAL JOINT FINE (UNJF) |
| CMLP | THREAD QUANTITY PER INCH | 24 |
| AAJD | THREAD CLASS | 3B |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | OVERALL MFR REF SINGLE TREATMENT RESPONSE 410,ELASTIC STO NUT COR |
| AZKQ | TEMP RATING | FAHRENHEIT NOMINAL 1200.0 |
| ACTA | NUT STYLE | — |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | OVERALL ASSN STD SINGLE MATERIAL RESPONSE A-S 5735 |
| AAVX | WASHER OUTSIDE DIAMETER | INCHES MINIMUM 0.510 AND INCHES MAXIMUM 0.520 |
| AAUM | LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| ADEM | WASHER THICKNESS | INCHES NOMINAL 0.063 |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 57571-524 | 56878 | SPS TECHNOLOGIES, LLC DBA PB FASTENERS | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 6828831-524 | 73342 | ALLISON TRANSMISSION INC DBA ALLISON TRANSMISSION, INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-10-13 | [SPE4A627P1918](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310001816824) | NUT, SELF-LOCKING, EX | AERO-GLEN INTERNATIONAL LLC | $20,148.80 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5310001816824&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310001816824
- 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/5310-00-181-6824/
JSON: https://nsnexplorer.com/api/nsn/5310-00-181-6824.json