# NSN 5310-00-490-2784: Nut, Self-Locking, Double Hexagon

NSN 5310-00-490-2784 (also written 5310004902784; NIIN 00-490-2784) is a nut, self-locking, double hexagon in Federal Supply Class 5310, Nuts and Washers. 2 manufacturer part numbers from 2 suppliers are on record. It was last purchased in Sep 2026.

## Identification

- NSN: 5310-00-490-2784 (5310004902784)
- NIIN: 00-490-2784 (004902784)
- Item name: NUT,SELF-LOCKING,DOUBLE HEXAGON
- 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 2026-10-27)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| CQFM | HARDNESS RATING | ROCKWELL C MINIMUM 38.0 AND ROCKWELL C MAXIMUM 45.0 |
| CRTM | BEARING SURFACE TYPE | CHAMFERED |
| CSXL | BEARING SURFACE FINISH | MICROINCHES 125.0 |
| AAUM | LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | OVERALL ASSN STD 1ST MATERIAL RESPONSE A-S 6280 OR ASSN STD 2ND MATERIAL RESPONSE A-S 6304 OR ASSN STD 3RD MATERIAL RESPONSE A-S 6322 |
| SFTT | SURFACE TREATMENT | OVERALL CADMIUM |
| MATT | MATERIAL | OVERALL STEEL COMP 8630 OR STEEL COMP 601 OR STEEL COMP 8740 |
| ADEA | NUT HEIGHT | INCHES MAXIMUM 0.312 |
| CQJX | NOMINAL THREAD SIZE | INCHES 0.375 |
| AZKQ | TEMP RATING | FAHRENHEIT MINIMUM -65.0 AND FAHRENHEIT MAXIMUM 450.0 |
| ABAJ | LUBRICATION | SOLUBLE LUBRICANT |
| BZRR | THREAD SERIES | UNIFIED NATIONAL JOINT FINE (UNJF) |
| CMLP | THREAD QUANTITY PER INCH | 24 |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | OVERALL FED SPEC SINGLE TREATMENT RESPONSE QQ--416,TY 2,CL 2 |
| AAJD | THREAD CLASS | 3B |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| ASDB | WIDTH ACROSS FLATS | INCHES MINIMUM 0.553 AND INCHES MAXIMUM 0.564 |
| ACTA | NUT STYLE | — |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 68456-6 | 56878 | SPS TECHNOLOGIES, LLC DBA PB FASTENERS | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| STSCD002-12 | 98897 | LOCKHEED MARTIN CORP DIV LOCKHEED MARTIN AERONAUTICS COMPANY | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-09-01 | [SPE4A626P0F65](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310004902784) | NUT, SELF-LOCKING, DO | — | $1,933.54 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5310004902784&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310004902784
- 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/5310-00-490-2784/
JSON: https://nsnexplorer.com/api/nsn/5310-00-490-2784.json