# NSN 5310-00-159-6449: Nut, Self-Locking, Double Hexagon

NSN 5310-00-159-6449 (also written 5310001596449; NIIN 00-159-6449) is a nut, self-locking, double hexagon in Federal Supply Class 5310, Nuts and Washers. 1 manufacturer part number from 1 supplier is on record. The government has 1 open solicitation for it.

## Identification

- NSN: 5310-00-159-6449 (5310001596449)
- NIIN: 00-159-6449 (001596449)
- 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 L: annual buy value is below the screening threshold. (observed 2026-10-16)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| ABAJ | LUBRICATION | DRY FILM LUBRICANT |
| ADEA | NUT HEIGHT | INCHES MAXIMUM 0.439 |
| CQFM | HARDNESS RATING | ROCKWELL C MINIMUM 38.0 AND ROCKWELL C MAXIMUM 45.0 |
| ACTA | NUT STYLE | — |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | OVERALL ASSN STD 1ST MATERIAL RESPONSE A-S 6300 OR ASSN STD 2ND MATERIAL RESPONSE A-S 6304 OR ASSN STD 3RD MATERIAL RESPONSE A-S 6280 |
| ASDB | WIDTH ACROSS FLATS | INCHES MINIMUM 0.741 AND INCHES MAXIMUM 0.752 |
| CMLP | THREAD QUANTITY PER INCH | 20 |
| CSXL | BEARING SURFACE FINISH | MICROINCHES 125.0 |
| CQJX | NOMINAL THREAD SIZE | INCHES 0.500 |
| CRTM | BEARING SURFACE TYPE | CHAMFERED |
| SFTT | SURFACE TREATMENT | OVERALL CADMIUM |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | OVERALL FED SPEC SINGLE TREATMENT RESPONSE QQ--416,TY 1,CL 3 |
| AZKQ | TEMP RATING | FAHRENHEIT NOMINAL 450.0 |
| BZRR | THREAD SERIES | UNIFIED NATIONAL JOINT FINE (UNJF) |
| MATT | MATERIAL | OVERALL STEEL COMP 601 |
| AAUM | LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| AAJD | THREAD CLASS | 3B |
| AAJF | THREAD DIRECTION | RIGHT-HAND |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| EWSN26M8 | 56878 | SPS TECHNOLOGIES, LLC DBA PB FASTENERS | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Open solicitations

| Solicitation | Quantity | Closes | Link |
| --- | --- | --- | --- |
| SPE4A6-27-T-4387 | 240 | 2026-10-23 | [DIBBS](https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5310001596449&category=nsn) |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5310001596449&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310001596449
- 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/5310-00-159-6449/
JSON: https://nsnexplorer.com/api/nsn/5310-00-159-6449.json