# NSN 5310-01-329-4163: Nut, Self-Locking, Extended Washer

NSN 5310-01-329-4163 (also written 5310013294163; NIIN 01-329-4163) is a nut, self-locking, extended washer in Federal Supply Class 5310, Nuts and Washers. 8 manufacturer part numbers from 7 suppliers are on record. No purchases are on record yet.

## Identification

- NSN: 5310-01-329-4163 (5310013294163)
- NIIN: 01-329-4163 (013294163)
- 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 D: the data needed to compete the part is unavailable or cannot be obtained economically. (observed 2026-10-10)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AAJD | THREAD CLASS | 3B |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AAVX | WASHER OUTSIDE DIAMETER | INCHES MAXIMUM 0.460 |
| AAWY | COUNTERBORE DIAMETER | NUT INCHES MINIMUM 0.107 AND INCHES MAXIMUM 0.117 |
| ABKW | OVERALL HEIGHT | INCHES MAXIMUM 0.340 |
| ASDB | WIDTH ACROSS FLATS | INCHES MINIMUM 0.306 AND INCHES MAXIMUM 0.316 |
| BZRR | THREAD SERIES | UNIFIED NATIONAL JOINT FINE (UNJF) |
| CMLP | THREAD QUANTITY PER INCH | 28 |
| CQFM | HARDNESS RATING | ROCKWELL C MINIMUM 33.0 AND ROCKWELL C MAXIMUM 44.0 |
| CQJX | NOMINAL THREAD SIZE | INCHES 0.250 |
| MATT | MATERIAL | NUT IRON ALLOY 660 |
| MATT | MATERIAL | WASHER STEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 303CU OR STEEL COMP 303F OR STEEL COMP 303MA OR STEEL COMP 303PB OR STEEL COMP 303 PLUS X OR STEEL COMP 303S OR STEEL COMP 303SE OR STEEL COMP 304 OR STEEL COMP 304H OR STEEL COMP 304L OR STEEL COMP 305 OR STEEL COMP 308 OR STEEL COMP 309 OR STEEL COMP 309S OR STEEL COMP 310 OR STEEL COMP 310S OR STEEL COMP 314 OR STEEL COMP 316 OR STEEL COMP 316L OR STEEL COMP 317 OR STEEL COMP 321 OR STEEL COMP 323 OR STEEL COMP 324 OR STEEL COMP 347 OR STEEL COMP 348 OR STEEL COMP 384 OR STEEL COMP 385 |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | NUT ASSN STD SINGLE MATERIAL RESPONSE A-S5731 OR ASSN STD SINGLE MATERIAL RESPONSE A-S5732 OR ASSN STD SINGLE MATERIAL RESPONSE A-S5737 |
| SFTT | SURFACE TREATMENT | WASHER PASSIVATE |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | WASHER FED SPEC SINGLE TREATMENT RESPONSE QQ--35 |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 03A136W4L | 1W025 | NORTHROP GRUMMAN SYSTEMS CORP DBA NORTHROP GRUMMAN COMPUTING SYSTEMS | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 03A136W4L | 27238 | BRISTOL INDUSTRIES, LLC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| BHW136M4 | 27238 | BRISTOL INDUSTRIES, LLC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| KFN512DL4 | 15653 | HOWMET GLOBAL FASTENING SYSTEMS INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| KFN512DL4 | 17446 | HUCK INTERNATIONAL, INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| KFN512DL4 | 56878 | SPS TECHNOLOGIES, LLC DBA PB FASTENERS | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| KFN512DL4 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC DIV TORRANCE OPERATIONS | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| KFN512DL4 | 97928 | HUCK INTL 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=5310013294163&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310013294163
- 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/5310-01-329-4163/
JSON: https://nsnexplorer.com/api/nsn/5310-01-329-4163.json