# NSN 5310-00-773-0448: Nut, Self-Locking, Extended Washer

NSN 5310-00-773-0448 (also written 5310007730448; NIIN 00-773-0448) is a nut, self-locking, extended washer in Federal Supply Class 5310, Nuts and Washers. 11 manufacturer part numbers from 5 suppliers are on record. It was last purchased in Aug 2026.

## Identification

- NSN: 5310-00-773-0448 (5310007730448)
- NIIN: 00-773-0448 (007730448)
- 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 C: needs engineering source approval; other sources must qualify first. (observed 2026-11-04)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AAUM | LOCKING FEATURE | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| SFTT | SURFACE TREATMENT | OVERALL EXCEPT INSERT CADMIUM |
| AAVX | WASHER OUTSIDE DIAMETER | INCHES MINIMUM 1.615 AND INCHES MAXIMUM 1.625 |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| ABKW | OVERALL HEIGHT | INCHES NOMINAL 1.125 |
| ACTA | NUT STYLE | — |
| ADEM | WASHER THICKNESS | INCHES NOMINAL 0.328 |
| ASDB | WIDTH ACROSS FLATS | INCHES MINIMUM 1.177 AND INCHES MAXIMUM 1.190 |
| AZKQ | TEMP RATING | FAHRENHEIT NOMINAL 250.0 |
| AAJD | THREAD CLASS | 3B |
| BZRR | THREAD SERIES | UNS |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | OVERALL EXCEPT INSERT ASSN STD ALL MATERIAL RESPONSES AISI |
| CQJX | NOMINAL THREAD SIZE | INCHES 1.000 |
| MATT | MATERIAL | LOCKING INSERT PLASTIC POLYAMIDE NYLON |
| CMLP | THREAD QUANTITY PER INCH | 14 |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | OVERALL EXCEPT INSERT FED SPEC SINGLE TREATMENT RESPONSE QQ--416,TY 1,CL 3 |
| MATT | MATERIAL | OVERALL EXCEPT INSERT STEEL COMP 4130 OR STEEL COMP 4340 OR STEEL COMP 3140 OR STEEL COMP 8740 |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 12NH-164 | 019L2 | ESNA, LLC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 418L417 ITEM 29 | 01289 | GENERAL ELECTRIC COMPANY | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 418L417 ITEM 52 | 01289 | GENERAL ELECTRIC COMPANY | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 653D682 PIECE 14 | 01289 | GENERAL ELECTRIC COMPANY | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 653D682P-14 | D9182 | ZF INDUSTRIEANTRIEBE WITTEN GMBH | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 653D783-21 | D9182 | ZF INDUSTRIEANTRIEBE WITTEN GMBH | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 655D132P-21 | D9182 | ZF INDUSTRIEANTRIEBE WITTEN GMBH | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 665D132P-21 | 01289 | GENERAL ELECTRIC COMPANY | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| EB164 | 56878 | SPS TECHNOLOGIES, LLC DBA PB FASTENERS | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| EB164 | 72962 | HARVARD INDUSTRIES INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| PS1-1178-164 | D9182 | ZF INDUSTRIEANTRIEBE WITTEN GMBH | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-08-17 | [SPE4A625D5869/SPE4A626F347B](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310007730448) | NUT, SELF-LOCKING, EXTENDED WASHER, DOUBLE | — | $4,932.00 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5310007730448&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310007730448
- 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/5310-00-773-0448/
JSON: https://nsnexplorer.com/api/nsn/5310-00-773-0448.json