# NSN 5310-00-472-8820: Nut, Self-Locking, Extended Washer

NSN 5310-00-472-8820 (also written 5310004728820; NIIN 00-472-8820) is a nut, self-locking, extended washer in Federal Supply Class 5310, Nuts and Washers. 4 manufacturer part numbers from 4 suppliers are on record. No purchases are on record yet.

## Identification

- NSN: 5310-00-472-8820 (5310004728820)
- NIIN: 00-472-8820 (004728820)
- 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 Z: a commercial, nondevelopmental or off-the-shelf item. (observed 2026-10-10)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| CQJX | NOMINAL THREAD SIZE | INCHES 0.250 |
| CMLP | THREAD QUANTITY PER INCH | 28 |
| MATT | MATERIAL | OVERALL STEEL COMP 303 |
| SFTT | SURFACE TREATMENT | OVERALL SILVER |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | OVERALL ASSN STD SINGLE TREATMENT RESPONSE A-S 2410 |
| ASDB | WIDTH ACROSS FLATS | INCHES MINIMUM 0.367 AND INCHES MAXIMUM 0.376 |
| AZKQ | TEMP RATING | FAHRENHEIT NOMINAL 800.0 |
| ABKW | OVERALL HEIGHT | INCHES MINIMUM 0.314 AND INCHES MAXIMUM 0.329 |
| ACTA | NUT STYLE | — |
| AAUM | LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| AAJD | THREAD CLASS | 3B |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| FEAT | SPECIAL FEATURES | BEARING SURFACE SHALL BE SQUARE TO P.D. OF THREAD TO WITHIN 0.001 T.I.R. |
| BZRR | THREAD SERIES | UNF |
| AAVX | WASHER OUTSIDE DIAMETER | INCHES MAXIMUM 0.443 |
| ADEM | WASHER THICKNESS | INCHES MINIMUM 0.060 AND INCHES MAXIMUM 0.080 |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 21349 | 86090 | EATON CORPORATION DBA AIRFRAME | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 561692-6 | 56232 | LOCKHEED MARTIN CORPORATION DIV RMS - MITCHEL FIELD | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 70Z1835-048 | 56878 | SPS TECHNOLOGIES, LLC DBA PB FASTENERS | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 70Z1835-048 | 72962 | HARVARD INDUSTRIES INC | [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=5310004728820&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310004728820
- 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/5310-00-472-8820/
JSON: https://nsnexplorer.com/api/nsn/5310-00-472-8820.json